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                                                                     EXHIBIT 4.2


                           SMARTALK TELESERVICES, INC.

                 5 3/4 % CONVERTIBLE SUBORDINATED NOTES DUE 2004
                          REGISTRATION RIGHTS AGREEMENT
                         Dated as of September 12, 1997


                          DONALDSON, LUFKIN & JENRETTE
                             SECURITIES CORPORATION

                              SALOMON BROTHERS INC

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                          REGISTRATION RIGHTS AGREEMENT

        This Registration Rights Agreement (the "Agreement") is entered into as
of September 12, 1997, among SmarTalk TeleServices, Inc., a California
corporation (the "Company"), and Donaldson, Lufkin & Jenrette Securities
Corporation and Salomon Brothers Inc (collectively, the "Initial Purchasers").

        This Agreement is made pursuant to the Purchase Agreement, dated
September 12, 1997, among the Company and the Initial Purchasers (the "Purchase
Agreement") pursuant to which the Initial Purchasers have agreed to purchase the
Company's 5 3/4 % Convertible Subordinated Notes due 2004 (the "Notes"). In
order to induce the Initial Purchasers to purchase the Notes, the Company has
agreed to provide the registration rights contained in this Agreement to the
Initial Purchasers and to their respective direct and indirect transferrers. The
execution of this Agreement is a condition to the closing of the transactions
contemplated by the Purchase Agreement.

        The parties hereby agree as follows:

1. Definitions

        As used in this Agreement, the following terms shall have the following
meanings:

        Advice: As defined in the last paragraph of Section 4 hereof.

        Affiliate of any specified person shall mean any other person directly
or indirectly controlling or controlled by or under direct or indirect common
control with such specified person. For the purposes of this definition,
"control," when used with respect to any person, means the power to direct the
management and policies of such person, directly or indirectly, whether through
the ownership of voting securities, by contract or otherwise and the terms
"affiliated," "controlling" and "controlled" have meanings correlative to the
foregoing.

        Agreement: This Registration Right Agreement, as the same may be
amended, supplemented or modified from time to time in accordance with the terms
hereof.

        Business Day: Each Monday, Tuesday, Wednesday, Thursday and Friday that
is not a day on which banking institutions in New York, New York are authorized
or obligated by law or executive order to close.

        Closing Date: The Closing Date as defined in the Purchase Agreement.

        Common Stock: Common Stock, no par value per share, of the Company.

        Company: SmarTalk TeleServices, Inc., a California corporation, and any
successor corporation thereto.

        Controlling person: As defined in Section 6(a) hereof.

        Damage Payment Date: Each of the semi-annual interest payment dates
provided in the Indenture.


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        Effectiveness Target Date: The 180th day following the Closing Date.

        Exchange Act: The Securities Exchange Act of 1934, as amended, and the
rules and regulations promulgated by the SEC pursuant thereto.

        Filing Date: The 90th day after the Closing Date.

        Holder: Each registered holder of any Transfer Restricted Securities.

        Indemnified Person: As defined in Section 6(a) hereof.

         Indenture: The Indenture, dated the date hereof, between the Company
and the Trustee thereunder, pursuant to which the Notes are being issued, as
amended, modified or supplemented from time to time in accordance with the terms
thereof.

        Initial Purchasers: Collectively, Donaldson Lufkin & Jenrette Securities
Corporation and Salomon Brothers Inc.

        Liquidated Damages: As defined in Section 3(a) hereof.

        NASD: National Association of Securities Dealers, Inc.

        Notes: Up to $150,000,000 aggregate principal amount of 5 3/4%
Convertible Subordinated Notes due 2004 of the Company being issued (or
authorized to be issued) pursuant to the Indenture.

        Person: An individual, partnership, corporation, limited liability
company, professional corporation, trust, unincorporated organization, or a
government or agency or political subdivision thereof.

        Prospectus: The prospectus included in any Registration Statement
(including, without limitation, a prospectus that discloses information
previously omitted from a prospectus filed as part of an effective registration
statement in reliance upon Rule 430A promulgated pursuant to the Securities
Act), as amended or supplemented by any prospectus supplement, with respect to
the terms of the offering of any portion of the Transfer Restricted Securities
covered by such Registration Statement, and all other amendments and supplements
to any such prospectus, including post-effective amendments, and all material
incorporated by reference or deemed to be incorporated by reference, if any, in
such prospectus.

        Registration Default: As defined in Section 3(a) hereof.

        Registration Statement: Any registration statement of the Company that
covers any of the Transfer Restricted Securities pursuant to the provisions of
this Agreement, including the Prospectus, amendments and supplements to such
registration statement or Prospectus, including pre- and post-effective
amendments, all exhibits thereto, and all material incorporated by reference or
deemed to be incorporated by reference, if any, in such registration statement.



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         Rule 144: Rule 144 promulgated by the SEC pursuant to the Securities
Act, as such Rule may be amended from time to time, or any similar rule or
regulation hereafter adopted by the SEC as a replacement thereto having
substantially the same effect as such Rule.

         Rule 144A: Rule 144A promulgated by the SEC pursuant to the Securities
Act, as such Rule may be amended from time to time, or any similar rule or
regulation hereafter adopted by the SEC as a replacement thereto having
substantially the same effect as such Rule.

         Rule 158: Rule 158 promulgated by the SEC pursuant to the Securities
Act, as such Rule may be amended from time to time, or any similar rule or
regulation hereafter adopted by the SEC as a replacement thereto having
substantially the same effect as such Rule.

         Rule 174: Rule 174 promulgated by the SEC pursuant to the Securities
Act, as such Rule may be amended from time to time, or any similar rule or
regulations hereafter adopted by the SEC as a replacement thereto having
substantially the same effect as such Rule.

         Rule 415: Rule 415 promulgated by the SEC pursuant to the Securities
Act, as such Rule may be amended from time to time, or any similar rule or
regulations hereafter adopted by the SEC as a replacement thereto having
substantially the same effect as such Rule.

         Rule 424: Rule 424 promulgated by the SEC pursuant to the Securities
Act, as such Rule may be amended from time to time, or any similar rule or
regulations hereafter adopted by the SEC as a replacement thereto having
substantially the same effect as such Rule.

         Rule 430A: Rule 430A promulgated by the SEC pursuant to the Securities
Act, as such Rule may be amended from time to time, or any similar rule or
regulations thereafter adopted by the SEC as a replacement thereto having
substantially the same effect as such Rule.

         Rule 462: Rule 462 promulgated by the SEC pursuant to the Securities
Act, as such Rule may be amended from time to time, or any similar rule or
regulations hereafter adopted by the SEC as a replacement thereto having
substantially the same effect as such Rule.

         SEC: The Securities and Exchange Commission.

         Securities Act: The Securities Act of 1933, as amended, and the rules
and regulations promulgated by the SEC thereunder.

         Shelf Registration Statement: As defined in Section 2 hereof.

         Special Counsel: Any special counsel to the holders of Transfer
Restricted Securities, for which holders of Transfer Restricted Securities will
be reimbursed pursuant to Section 5 hereof.

         TIA: The Trust Indenture Act of 1939, as amended.

         Transfer Restricted Securities; The Notes and the shares of Common
Stock into which the Notes are convertible, upon original issuance thereof, and
at all times subsequent thereto, until, in the case of any such Note or share,
the earliest of (i) the date on which it has been registered effectively
pursuant to the Securities Act and disposed of in accordance with the
Registration Statement relating



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to it, (ii) the date on which either such Note or the shares of Common Stock
issued upon conversion of such Note are distributed to the public pursuant to
Rule 144 (or any similar provisions then in effect) or are salable pursuant to
Rule 144(k) promulgated by the SEC pursuant to the Securities Act or (iii) the
date on which it ceases to be outstanding.

         Trustee: Wilmington Trust Company, the trustee under the Indenture.

         Underwritten Registration or Underwritten Offering: A registration in
connection with which securities of the Company are sold to an underwriter for
reoffering to the public pursuant to an effective Registration Statement.

2. Shelf Registration

        (a) The Company agrees to file with the SEC as promptly as practicable
after the Closing Date, but in no event later than the Filing Date, a
Registration Statement for an offering to be made on a continuous basis pursuant
to Rule 415 covering all of the Transfer Restricted Securities (the "Shelf
Registration Statement"). The Shelf Registration Statement shall be on Form S-3
under the Securities Act or another appropriate form permitting registration of
such Transfer Restricted Securities for resale by the Holders in the manner or
manners reasonably designated by them (including, without limitation, one or
more underwritten offerings). The Company shall use its best efforts, as
described in Section 4, to cause the Shelf Registration Statement to be declared
effective pursuant to the Securities Act as promptly as practicable following
the filing thereof, but in no event later than the Effectiveness Target Date,
and to keep the Shelf Registration Statement continuously effective under the
Securities Act for 24 months after the Closing Date (the "Effectiveness
Period"), or such shorter period ending when either (1) all Transfer Restricted
Securities covered by the Shelf Registration Statement have been sold in the
manner set forth in the Shelf Registration Statement or (2) there cease to be
outstanding any Transfer Restricted Securities. The Company shall use its best
efforts to keep the Shelf Registration Statement continuously effective by
supplementing and amending the Shelf Registration Statement to the extent
necessary to ensure that it is available for sales of Transfer Restricted
Securities by the holder thereof entitled to the benefits of this section 2(a),
and to ensure that it conforms with the requirements of this agreement, the
Securities Act and the rules, regulations or instructions applicable to the
registration form used for such Shelf Registration Statement.

        (b) Suspension of Shelf Registration Statement. Notwithstanding anything
to the contrary in this Section 2, but subject to compliance with Section 3, the
Company may, by delivering written notice to the Holders, prohibit offers and
sales of Transfer Restricted Securities pursuant to the Shelf Registration
Statement at any time if (i) the Company is in possession of material non-public
information, (ii) the Company determines (based on advice of counsel) that such
prohibition is necessary in order to avoid a requirement to disclose such
material non-public information and (iii) the Company determines in good faith
that disclosure of such material non-public information would have a material
adverse effect on the Company and its stockholders; provided, however, that upon
the public disclosure by the Company of the material non-public information
described in clause (i) of this paragraph, the suspension of the use of the
Shelf Registration Statement pursuant to this Section 2(b) shall cease and the
Company shall promptly comply with Section 4(b) hereof. In no event shall any
suspension of the Shelf Registration Statement pursuant to this Section 2(b)
exceed sixty (60) days in any twelve (12) month period.



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3. Liquidated Damages

        (a) The Company and the Initial Purchasers agree that the Holders of
Transfer Restricted Securities will suffer damages if the Company fails to
fulfill its obligations pursuant to Section 2 and Section 4(b) hereof and that
it would not be possible to ascertain the extent of such damages. Accordingly,
in the event of such failure by the Company to fulfill such obligations, the
Company hereby agrees to pay liquidated damages ("Liquidated Damages") to each
Holder of Transfer Restricted Securities who has complied with such Holder's
obligations under this Agreement under the circumstances and to the extent set
forth below (clauses (i) through (ii) individually, a "Registration Default"):

                  (i) if the Shelf Registration Statement has not been filed
         with the SEC on or prior to the Filing Date; or

                  (ii) if the Shelf Registration Statement is not declared
         effective by the SEC on or prior to the Effectiveness Target Date; or

                  (iii) the Shelf Registration Statement has been declared
         effective by the SEC and thereafter ceases to be effective or usable
         (including as a result of a suspension of the use of ,the Shelf
         Registration Statement as described in Section 2(b) hereof).

then the Company shall pay Liquidated Damages to each Holder of Transfer
Restricted Securities during the first 90-day period immediately following the
occurrence of such Registration Default in an amount equal to $.05 per week per
$1,000 principal amount of Note, and if applicable, $.00186 per week per share
(subject to adjustment in the event of stock splits, stock recombinations, stock
dividends and the like) of Common Stock constituting Transfer Restricted
Securities held by such Holder for each week or portion thereof that the
Registration Default continues. The amount of such Liquidated Damages will
increase by an additional $.05 per week per $1,000 principal amount of Note, and
if applicable, $.00186 per week per share (subject to adjustment in the event of
stock splits, stock recombinations, stock dividends and the like) of Common
Stock constituting Transfer Restricted Securities for each subsequent 90-day
period until all Registration Defaults have been cured, up to a maximum amount
of Liquidated Damages of $.50 per week per $1,000 principal amount of Notes or,
if applicable $.0186 per week per share (subject to adjustment in the event of
stock splits, stock recombinations, stock dividends and the like) of Common
Stock constituting Transfer Restricted Securities. Each obligation to pay
Liquidated Damages shall be deemed to commence as of the date of the applicable
Registration Default and shall cease accruing when all Registration Defaults
have been cured. A Registration Default under clause (i) above shall be deemed
cured on the date that the Shelf Registration Statement is filed with the SEC; a
Registration Default under clause (ii) above shall be cured on the date that the
Shelf Registration Statement is declared effective by the SEC; and a
Registration Default under clause (iii) above shall be deemed cured on the date
the Shelf Registration Statement is again declared effective or the Prospectus
contained therein again becomes usable.

        (b) All accrued Liquidated Damages shall be paid to the Holder of
Transfer Restricted Securities by wire transfer of immediately available funds
on each Damage Payment Date. All obligations of the Company set forth in Section
3 hereof that are outstanding with respect to any Transfer Restricted Security
at the time such security ceases to be a Transfer Restricted Security shall
survive until such time as all such obligations with respect to such security
have been satisfied in full.



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4. Registration Procedures

In connection with the Company's registration obligations pursuant to Section 2
above, the Company shall as expeditiously as possible:

        (a) use reasonable efforts to keep such Shelf Registration Statement
continuously effective and provide all requisite financial statements for the
period specified in Section 2 of this Agreement. Upon the occurrence of any
event that would cause any such Shelf Registration Statement or the Prospectus
contained therein (A) to contain a material misstatement or omission or (B) not
to be effective and usable for resale of Transfer Restricted Securities during
the period required by this Agreement, the Company shall file promptly an
appropriate amendment to such Shelf Registration Statement, (1) in the case of
clause (A), correcting any such misstatement or omission, and (2) in the case of
clauses (A) and (B), use its best efforts to cause such amendment to be declared
effective and such Shelf Registration Statement and the related Prospectus to
become usable for their intended purpose(s) as soon as practicable thereafter.

        (b) prepare and file with the SEC such amendments and post-effective
amendments to the Shelf Registration Statement as may be necessary to keep the
Shelf Registration Statement effective for the applicable period set forth in
Section 2; cause the Prospectus to be supplemented by any required Prospectus
supplement, and as so supplemented to be filed pursuant to Rule 424 under the
Securities Act, and to comply fully with Rules 424, 430A and 462, as applicable,
under the Securities Act in a timely manner; and comply with the provisions of
the Securities Act with respect to the disposition of all securities covered by
such Shelf Registration Statement during the applicable period in accordance
with the intended method or methods of distribution by the sellers thereof set
forth in such Shelf Registration Statement or supplement to the Prospectus;

        (c) advise the underwriters, if any, and selling Holders promptly and,
if requested by such Persons, confirm such advice in writing, (i) when the
Prospectus or any Prospectus supplement or post-effective amendment has been
filed, and, with respect to any Shelf Registration Statement or any
post-effective amendment thereto, when the same has become effective, (ii) of
any request by the SEC for amendments to the Shelf Registration Statement or
amendments or supplements to the Prospectus or for additional information
relating thereto, (iii) of the issuance by the SEC of any stop order suspending
the effectiveness of the Shelf Registration Statement under the Securities Act
or of the suspension by any state securities commission of the qualification of
the Transfer Restricted Securities for offering or sale in any jurisdiction, or
the initiation of any proceeding for any of the preceding purposes, and (iv) of
the existence of any fact or the happening of any event that makes any statement
of a material fact made in the Shelf Registration Statement, the Prospectus, any
amendment or supplement thereto or any document incorporated by reference
therein untrue, or that requires the making of any additions to or changes in
the Shelf Registration Statement in order to make the statements therein not
misleading, or that requires the making of any additions to or changes in the
Prospectus in order to make the statements therein, in the light of the
circumstances under which they were made, not misleading. If at any time the SEC
shall issue any stop order suspending the effectiveness of the Shelf
Registration Statement, or any state securities commission or other regulatory
authority shall issue an order suspending the qualification or exemption from
qualification of the Transfer Restricted Securities under state securities or
Blue Sky laws, the Company shall use its best efforts to obtain the withdrawal
or lifting of such order at the earliest possible time;



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         (d) furnish to the Initial Purchasers, each selling Holder named in any
Shelf Registration Statement or Prospectus and each of the underwriter(s) in
connection with such sale, if any, before filing with the SEC, copies of any
Shelf Registration Statement or any Prospectus included therein or any
amendments or supplements to any such Shelf Registration Statement or Prospectus
(including all documents incorporated by reference after the initial filing of
such Shelf Registration Statement), which documents will be subject to the
review and comment of such Holders and underwriter(s) in connection with such
sale, if any, for a period of at least five Business Days, and the Company will
not file any such Shelf Registration Statement or Prospectus or any amendment or
supplement to any such Shelf Registration Statement or Prospectus (including all
such documents incorporated by reference) to which the selling Holders of the
Transfer Restricted Securities covered by such Shelf Registration Statement or
the underwriter(s) in connection with such sale, if any, shall reasonably object
within five Business Days after the receipt thereof. A selling Holder or
underwriter, if any, shall be deemed to have reasonably objected to such filing
only if such Shelf Registration Statement, amendment, Prospectus or supplement,
as applicable, as proposed to be filed, contains a material misstatement or
omission or fails to comply with the applicable requirements of the Securities
Act;

         (e) promptly following the filing of any document that is to be
incorporated by reference into a Shelf Registration Statement or Prospectus,
provide copies of such document to the selling Holders and to the underwriter(s)
in connection with such sale, if any, make the Company's representatives
available for discussion of such document and other customary due diligence
matters, and include such information in such document prior to the filing
thereof as such selling Holders or underwriter(s), if any, reasonably may
request.

         (f) make available at reasonable times for inspection by the selling
Holders, any managing underwriter participating in any disposition pursuant to
such Shelf Registration Statement and any attorney or accountant retained by
such selling Holders or any of such underwriter(s), all relevant financial and
other records, pertinent corporate documents and properties of the Company and
cause the Company's officers, directors and employees to supply all relevant
information reasonably requested by any such Holder, underwriter, attorney or
accountant in connection with such Shelf Registration Statement or any
post-effective amendment thereto subsequent to the filing thereof and prior to
its effectiveness;

         (g) if requested by any selling Holders or the underwriter(s) in
connection with such sale, if any, promptly include in any Shelf Registration
Statement or Prospectus, pursuant to a supplement or post-effective amendment if
necessary, such information as such selling Holders and underwriter(s), if any,
may reasonably request to have included therein, including, without limitation,
information relating to the "Plan of Distribution" of the Transfer Restricted
Securities, information with respect to the principal amount of Transfer
Restricted Securities being sold to such underwriter(s), the purchase price
being paid therefor and any other terms of the offering of the Transfer
Restricted Securities to be sold in such offering; and make all required filings
of such Prospectus supplement or post-effective amendment as soon as practicable
after the Company is notified of the matters to be included in such Prospectus
supplement or post-effective amendment;

         (h) furnish to each selling Holder and each of the underwriter(s) in
connection with such sale, if any, without charge, at least one copy of the
Shelf Registration Statement, as first filed with the SEC, and of each amendment
thereto, including all documents incorporated by reference therein and all
exhibits (including exhibits incorporated therein by reference);



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         (i) deliver to each selling Holder and each of the underwriters), if
any, without charge, as many copies of the Prospectus (including each
preliminary prospectus) and any amendment or supplement thereto as such Persons
reasonably may request; the Company hereby consent to the use (in accordance
with law) of the Prospectus and any amendment or supplement thereto by each of
the selling Holders and each of the underwriters), if any, in connection with
the offering and the sale of the Transfer Restricted Securities covered by the
Prospectus or any amendment or supplement thereto;

         (j) enter into such agreements (including an underwriting agreement)
and make such representations and warranties and take all such other actions in
connection therewith in order to expedite or facilitate the disposition of the
Transfer Restricted Securities pursuant to any Shelf Registration Statement
contemplated by this Agreement as may be reasonably requested by any Holder of
Transfer Restricted Securities or underwriter in connection with any sale or
resale pursuant to any Shelf Registration Statement contemplated by this
Agreement, and, at or prior to each closing under the applicable underwriting
agreement, the Company shall:

                  (A) furnish (or in the case of paragraphs (2) and (3), use its
         best efforts to furnish) to each selling Holder and each underwriter,
         if any, upon the effectiveness of the Shelf Registration Statement:

                           (1) a certificate, dated the date of effectiveness of
                  the Shelf Registration Statement, as the case may be, signed
                  on behalf of the Company by (x) the President or any Vice
                  President and (y) a principal financial or accounting officer
                  of the Company, confirming, as of the date thereof, the
                  matters set forth in paragraphs (a) through (d) of Section 9
                  of the Purchase Agreement and such other similar matters as
                  the Holders or underwriters) may reasonably request;

                           (2) an opinion, dated the date of effectiveness of
                  the Shelf Registration Statement, as the case may be, of
                  counsel for the Company covering matters similar to those set
                  forth in paragraph (i) of Section 9 of the Purchase Agreement
                  and such other matter as the Holders or underwriters may
                  reasonably request, and in any event including a statement to
                  the effect that such counsel has participated in conferences
                  with officers and other representatives of the Company,
                  representatives of the independent public accountants for the
                  Company and have considered the matters required to be stated
                  therein and the statements contained therein, although such
                  counsel has not independently verified the accuracy,
                  completeness or fairness of such statements; and that such
                  counsel advises that, on the basis of the foregoing (relying
                  as to materiality to a large extent upon facts provided to
                  such counsel by officers and other representatives of the
                  Company and without independent check or verification), no
                  facts came to such counsel's attention that caused such
                  counsel to believe that the applicable Shelf Registration
                  Statement, at the time such Shelf Registration Statement or
                  any post-effective amendment thereto became effective,
                  contained an untrue statement of a material fact or omitted to
                  state a material fact required to be stated therein or
                  necessary to make the statements therein not misleading, or
                  that the Prospectus contained in such Shelf Registration
                  Statement as of its date, contained an untrue statement of a
                  material fact or omitted to state a material fact necessary in
                  order to make the statements therein, in the light of the
                  circumstances under which they were made, not misleading.
                  Without limiting the foregoing, such counsel may state further
                  that such counsel assumes no responsibility for, and has not


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                  independently verified, the accuracy, completeness or fairness
                  of the financial statements, notes and schedules and other
                  financial data included in any Shelf Registration Statement
                  contemplated by this Agreement or the related Prospectus; and

                           (3) customary comfort letters, dated as of the date
                  of effectiveness of the Shelf Registration Statement, from the
                  independent accountants of the Company and to the extent that
                  the Company's proposed acquisition of ConQuest
                  Telecommunications Services, Inc. is pending or is
                  consummated, the independent accountants of ConQuest
                  Telecommunication Services, Inc., in the customary form and
                  covering matters of the type customarily covered in comfort
                  letters to underwriters in connection with primary
                  underwritten offerings, and affirming the matters set forth in
                  the comfort letters delivered pursuant to Section 9 of the
                  Purchase Agreement, without exception;

                  (B) set forth in full or incorporate by reference in the
         underwriting agreement, if any, in connection with any sale or resale
         pursuant to any Shelf Registration Statement the indemnification
         provisions and procedures of Section 6 hereof with respect to all
         parties to be indemnified pursuant to said Section; and

                  (C) deliver such other documents and certificates as may be
         reasonably requested by the selling Holders and the underwriters, if
         any, to evidence compliance with clause (A) above and with any
         customary conditions contained in the underwriting agreement or other
         agreement entered into by the Company pursuant to this clause (j).

        The above shall be done at each closing under such underwriting or
similar agreement, as and to the extent required thereunder, and if at any time
the representations and warranties of the Company contemplated in (A)(1) above
cease to be true and correct, the Company shall so advise the underwriter(s), if
any, and the selling Holders promptly and if requested by such Persons, shall
confirm such advice in writing;

        (k) prior to any public offering of Transfer Restricted Securities,
cooperate with the selling Holders, the underwriters, if any, and their
respective counsel in connection with the registration and qualification of the
Transfer Restricted Securities under the securities or Blue Sky laws of such
jurisdictions as the selling Holders or underwriters, if any, may request and do
any and all other acts or things necessary or advisable to enable the
disposition in such jurisdictions of the Transfer Restricted Securities covered
by the applicable Shelf Registration Statement; provided, however, that the
Company shall not be required to register or qualify as a foreign corporation
where it is not now so qualified or to take any action that would subject it to
the service of process in suits or to taxation, other than as to matters and
transactions relating to the Shelf Registration Statement, in any jurisdiction
where it is not now so subject;

         (l) in connection with any sale of Transfer Restricted Securities that
will result in such securities no longer being Transfer Restricted Securities,
cooperate with the selling Holders and the underwriters, if any, to facilitate
the timely preparation and delivery of certificates representing Transfer
Restricted Securities to be sold and not bearing any restrictive legends; and to
register such Transfer Restricted Securities in such denominations and such
names as the Holders or the underwriters, if any, may request at least two
Business Days prior to such sale of Transfer Restricted Securities;



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         (m) use their respective best efforts to cause the disposition of the
Transfer Restricted Securities covered by the Shelf Registration Statement to be
registered with or approved by such other governmental agencies or authorities
as may be necessary to enable the seller or sellers thereof or the
underwriters), if any, to consummate the disposition of such Transfer Restricted
Securities, subject to the proviso contained in clause (k) above;

         (n) subject to Section 6(c)(i), if any fact or event contemplated by
Section 6(c)(iv) above shall exist or have occurred, prepare a supplement or
post-effective amendment to the Shelf Registration Statement or related
Prospectus or any document incorporated therein by reference or file any other
required document so that, as thereafter delivered to the purchasers of Transfer
Restricted Securities, the Prospectus will not contain an untrue statement of a
material fact or omit to state any material fact necessary to make the
statements therein, in the light of the circumstances under which they were
made, not misleading;

         (o) provide a CUSIP number for all Transfer Restricted Securities not
later than the effective date of a Shelf Registration Statement covering such
Transfer Restricted Securities and provide the Trustee under the Indenture with
printed certificates for the Transfer Restricted Securities which are in a form
eligible for deposit with the Depository Trust Company;

         (p) cooperate and assist in any filings required to be made with the
NASD and in the performance of any due diligence investigation by any
underwriter (including any "qualified independent underwriter") that is required
to be retained in accordance with the rules and regulations of the NASD;

         (q) concurrently with the effectiveness of the first Shelf Registration
Statement, use reasonable efforts to authorize for quotation the Notes on the
Nasdaq Small Cap Market and the Common Stock covered by such Shelf Registration
Statement on the Nasdaq National Market if the Common Stock is then so
authorized for quotation.

         (r) cause the Indenture to be qualified under the TIA not later than
the effective date of the first Shelf Registration Statement required by this
Agreement and, in connection therewith, cooperate with the Trustee and the
Holders of Notes to effect such changes to the Indenture as may be required for
such Indenture to be so qualified in accordance with the terms of the TIA; and
execute and use its best efforts to cause the Trustee to execute, all documents
that may be required to effect such changes and all other forms; and documents
required to be filed with the Commission to enable such Indenture to be so
qualified in a timely manner; and

         (s) Each Holder of Transfer Restricted Securities agrees by acquisition
of such Transfer Restricted Securities that, upon receipt of any notice from the
Company pursuant to Section 4(a) hereof or of the happening of any event of the
kind described in Section 6(c)(iv) hereof, such Holder will forthwith
discontinue disposition of such Transfer Restricted Securities covered by such
Shelf Registration Statement or Prospectus until such Holder's receipt of the
copies of the supplemented or amended Prospectus contemplated by Section 4(n)
hereof, or until it is advised in writing (the "Advice") by the Company that the
use of the applicable Prospectus may be resumed, and, in either case, has
received copies of any additional or supplemental filings that are incorporated
or deemed to be incorporated by reference in such Prospectus and, if so directed
by the Company, such Holder will deliver to the Company (at the Company's
expense) all copies, other than permanent file copies, then in such Holder's
possession of the Prospectus covering such Transfer Restricted Securities at the
time



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of receipt of such notice. In the event the Company shall give any such notice,
the time period regarding the effectiveness of such Shelf Registration Statement
set forth in Section 2 hereof, shall be extended by the number of days during
the period from and including the date of the giving of such notice pursuant to
Section 4(c)(i) or Section 4(c)(v) hereof to and including the date when each
selling Holder covered by such Shelf Registration Statement shall have received
the copies of the supplement or amended Prospectus contemplated by Section 4(n)
hereof or shall have received the Advice.

5. Registration Expenses

         (a) All fees and expenses incident to the performance of or compliance
with this Agreement by the Company shall be borne by it whether or not any Shelf
Registration Statement is filed or becomes effective and whether or not any
securities are issued or sold pursuant to any Shelf Registration Statement. The
fees and expenses referred to in the foregoing sentence shall include, without
limitation, (i) all registration and filing fees (including, without limitation,
fees and expenses (A) with respect to filings required to be made with the NASD,
(B) in compliance with securities or Blue Sky laws (including, without
limitation and in addition to that provided for in (b) below, reasonable fees
and disbursements of counsel for the underwriters or Special Counsel for the
Holders in connection with Blue Sky qualifications of the Transfer Restricted
Securities and determination of the eligibility of the Transfer Restricted
Securities for investment under the laws of such jurisdictions as the managing
underwriters, if any, or Holders of a majority (on a fully converted basis) of
Transfer Restricted Securities may designate)) and (C) the fees payable in
connection with the listing of the Notes and the Common Stock covered by the
Shelf Registration Statement in accordance with Section 4(q) hereof, (ii)
printing expenses (including, without limitation, expenses of printing
certificates for Transfer Restricted Securities in a form eligible for deposit
with The Depository Trust Company and of printing Prospectuses if the printing
of Prospectuses is requested by the managing underwriters, if any), (iii)
messenger, telephone and delivery expenses, (iv) fees and disbursements of
counsel for the Company and Special Counsel for the Holders (plus any local
counsel, in accordance with the provisions of Section 5(b) hereof), (v) fees and
disbursements of all independent certified special audit and "cold comfort"
letters required by or incident to such performance, (vi) Securities Act
liability insurance, if the Company so desires such insurance, and (vii) fees
and expenses of all other persons retained by the Company. In addition, the
Company shall pay its internal expenses (including, without limitation, all
salaries and expenses of its officers and employees performing legal or
accounting duties), the expense of any annual audit, and the fees and expenses
incurred in connection with the listing of the securities to be registered on
any securities exchange.

         (b) In connection with any registration hereunder, the Company shall
reimburse the Holders of the Transfer Restricted Securities being registered in
such registration for the reasonable fees and disbursements of not more than one
firm of attorneys representing the selling Holders (in addition to any local
counsel), which firm, if any, shall be chosen by the Holders of a majority of
the Transfer Restricted Securities.

6. Indemnification

         (a) The Company agrees to indemnify and hold harmless (i) each Holder
and (ii) each person, if any, who controls (within the meaning of Section 15 of
the Act or Section 20 of the Exchange Act) any Holder (any of the persons
referred to in this clause (ii) being hereinafter referred to as a "controlling
person") and (iii) the respective officers, directors, partners, employees,
representatives and agents of any Holder or any controlling person (any person
referred to in clause


                                      -11-
   13

(i), (ii) or (iii) may hereinafter be referred to as an "Indemnified Holder"),
to the fullest extent lawful, from and against any and all losses, claims,
damages, liabilities, judgments, actions and expenses (including without
limitation and as incurred, reimbursement of all reasonable costs of
investigating, preparing, pursuing or defending any claim or action, or any
investigation or proceeding by any governmental agency or body, commenced or
threatened, including the reasonable fees and expenses of counsel to any
Indemnified Holder) directly or indirectly caused by any untrue statement or
alleged untrue statement of a material fact contained in any Shelf Registration
Statement, preliminary prospectus or Prospectus (or any amendment or supplement
thereto), or cause by any omission or alleged omission to state therein a
material fact required to be stated therein or necessary to make the statements
therein not misleading, except insofar as such losses, claims, damages,
liabilities or expenses are caused by any such untrue statement or omission or
alleged untrue statement or omission that is made in reliance upon and in
conformity with information relating to any of the Holders furnished in writing
to the Company by any of the Holders expressly for use therein.

         In case any action or proceeding (including any governmental or
regulatory investigation or proceeding) shall be brought against any Indemnified
Holder based upon the Shelf Registration Statement and with respect to which
indemnity may be sought against the Company, such Indemnified Holder (or the
Indemnified Holder controlled by such controlling person) shall promptly notify
the Company in writing (provided, that the failure to give such notice shall not
relieve the Company of their obligations pursuant to this Agreement). Such
Indemnified Holder shall have the right to employ its own counsel in any such
action and the fees and expenses of such counsel shall be at the expense of the
such Indemnified Holder, unless (i) the employment of such counsel shall have
been specifically authorized in writing by the Company, (ii) the Company shall
have failed to assume the defense and employ counsel or (iii) the named parties
to any such action (including any impleaded parties) include both the
Indemnified Holder and the Company, and such Indemnified Holder shall have been
advised by counsel that there may be one or more legal defense available to it
which are different from or additional to those available to the Company (in
which case the Company shall not have the right to assume the defense) it being
understood, however, that the Company shall not, in connection with any one such
action or proceeding or separate but substantially similar or related actions or
proceedings in the same jurisdiction arising out of the same general allegations
or circumstances, be liable for the reasonable fees and expenses of more than
one separate firm of attorneys (in addition to any local counsel) for such
Indemnified Holders, which firm shall be designated by the Holders. The Company
shall be liable for any settlement of any such action or proceeding effected
with the Company's prior written consent, which consent shall not be withheld
unreasonably, and the Company agrees to indemnify and hold harmless each
Indemnified Holder from and against any loss, claim, damage, liability or
expense by reason of any settlement of any action effected with the written
consent of the Company. In addition, the Company shall be liable for any
settlement of any such action or proceeding effected without the Company's prior
written consent if such settlement is entered into more than twenty business
days after the Company shall have received a request from the Indemnified
Holders for reimbursement for the fees and expenses of counsel (in any case
where such fees and expenses are at the expense of the Company) and, prior to
the date of such settlement, the Company shall have failed to comply with such
reimbursement request, and the Company agrees to indemnify and hold harmless
each such Indemnified Holder from and against any loss, claim, damage, liability
or expense by reason of such settlement. The Company shall not, without the
prior written consent of such Indemnified Holder, settle or compromise or
consent to the entry of judgment in or otherwise seek to terminate any pending
or threatened action, claim, litigation or proceeding in respect of which
indemnification or contribution may be sought hereunder (whether or not any
Indemnified Holder is a party thereto), unless such settlement, compromise,
consent or



                                      -12-

   14

termination includes an unconditional release of such Indemnified Holder from
all liability arising out of such action, claim, litigation or proceeding.

         (b) Each Holder of Transfer Restricted Securities agrees, severally and
not jointly, to indemnify and hold harmless the Company and its respective
directors, officers, and any person controlling (within the meaning of Section
15 of the Act or Section 20 of the Exchange Act) the Company, and its officers,
directors, partners, employees, representatives and agents of each such person,
to the same extent as the foregoing indemnity from the Company to each of the
Indemnified Holders, but only with respect to claims and actions based on
information relating to such Holder furnished in writing by such Holder
expressly for use in any Shelf Registration Statement. In case any action or
proceeding shall be brought against the Company or its directors or officers or
any such controlling person in respect of which indemnity may be sought against
a Holder of Transfer Restricted Securities, such Holder shall have the rights
and duties given the Company (except that if the Company shall have assumed the
defense thereof, such Holder shall not be required to do so, but may employ
separate counsel therein and participate in the defense thereof but the fees and
expenses of such counsel shall be at the expense of such Indemnified Holder, its
directors or officers or such controlling persons) shall have the rights and
duties given to each Holder by the preceding paragraph. In no event shall any
Holder be liable or responsible for any amount in excess of the amount by which
the total received by such Holder with respect to its sale of Transfer
Restricted Securities pursuant to a Shelf Registration Statement exceeds (i) the
amount paid by such Holder for such Transfer Restricted Securities and (ii) the
amount of any damages which such Holder has otherwise been required to pay by
reason of such untrue or alleged untrue statement or omission or alleged
omission.

         (c) If the indemnification provided for in this Section 6 is
unavailable to an indemnified party under Section 6(a) or Section 6(b) hereof
(other than by reason of exceptions provided in those Sections) in respect of
any losses, claims, damages, liabilities or expenses referred to therein, then
each applicable indemnifying party, in lieu of indemnifying such indemnified
party, shall contribute to the amount paid or payable by such indemnified party
as a result of such losses, claims, damages, liabilities or expenses in such
proportion as is appropriate to reflect the relative benefits received by the
Company, on the one hand, and the Holders, on the other hand, from their sale of
Transfer Restricted Securities or if such allocation is not permitted by
applicable law, the relative fault of the Company, on the one hand, and of the
Indemnified Holder, on the other hand, in connection with the statements or
omissions which resulted in such losses, claims, damages, liabilities or
expenses, as well as any other relevant equitable considerations. The relative
fault of the Company, on the one hand, and of the Indemnified Holder, on the
other hand, shall be determined by reference to, among other things, whether the
untrue or alleged untrue statement of a material fact or the omission or alleged
omission to state a material fact relates to information supplied by the Company
or by the Indemnified Holder and the parties' relative intent, knowledge, access
to information and opportunity to correct or prevent such statement or omission.
The amount paid or payable by a party as a result of the losses, claims,
damages, liabilities and expenses referred to above shall be deemed to include,
subject to the limitations set forth in the second paragraph of Section 6(a),
any legal or other fees or expenses reasonably incurred by such party in
connection with investigating or defending any action or claim.

         The Company and each Holder of Transfer Restricted Securities agree
that it would not be just and equitable if contribution pursuant to this Section
6(c) were determined by pro rata allocation (even if the Holders were treated as
one entity for such purpose) or by any other method of allocation



                                      -13-

   15

which does not take account of the equitable considerations referred to in the
immediately preceding paragraph. The amount paid or payable by an indemnified
party as a result of the losses, claims, damages, liabilities or expenses
referred to in the immediately preceding paragraph shall be deemed to include,
subject to the limitations set forth above, any legal or other expenses
reasonably incurred by such indemnified party in connection with investigating
or defending any such action or claim. Notwithstanding the provisions of this
Section 6, no Holder shall be required to contribute, in the aggregate, any
amount in excess of the amount by which the total amount received by such Holder
with respect to the sale of its Transfer Restricted Securities pursuant to a
Shelf Registration Statement exceeds the sum of (A) the amount paid by such
Holder for such Transfer Restricted Securities plus (B) the amount of any
damages which such Holder has otherwise been required to pay by reason of such
untrue or alleged untrue statement or omission or alleged omission. No person
guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of
the Act) shall be entitled to contribution from any person who was not guilty of
such fraudulent misrepresentation. The Holders' obligations to contribute
pursuant to this Section 6(c) are several in proportion to the respective
principal amount of Series A Notes held by each of the Holders hereunder and not
joint.

7. Rules 144 and 144A

         The Company shall file the reports required to be filed by it under the
Securities Act and the Exchange Act in a timely manner and, if at any time it is
not required to file such reports but in the past had been required to or did
file such reports, it will, upon the request of any holder of Transfer
Restricted Securities, make available other information as required by, and so
long as necessary to permit, sales of its Transfer Restricted Securities
pursuant to Rule 144 and Rule 144A.

8. Underwritten Registrations

         (a) If any of the Transfer Restricted Securities covered by any Shelf
Registration Statement are to be sold in an underwritten offering, the
investment banker or investment bankers and manager or managers that will
administer the offering will be selected by the Holders of a majority in
aggregate principal amount of the Transfer Restricted Securities included in
such offering, subject to the consent of the Company which will not be
unreasonably withheld or delayed.

         (b) No person may participate in any underwritten registration
hereunder unless such person (i) agrees to sell such person's Transfer
Restricted Securities on the basis reasonably provided in any underwriting
arrangements approved by the persons entitled hereunder to approve such
arrangements and (ii) completes and executes all questionnaires, powers of
attorney, and other documents required under the terms of such underwriting
arrangements.

9. Miscellaneous

         (a) Remedies. Each holder of Transfer Restricted Securities or the
Company, in addition to being entitled to exercise all rights provided herein,
in the Indenture the Purchase Agreement or granted by law, including recovery of
damages, will be entitled to specific performance of its rights under this
Agreement. The Company and each holder of Transfer Restricted Securities agrees
that monetary damages would not be adequate compensation for any loss incurred
by reason of a breach by the Company of the provisions of this Agreement and
hereby agrees to waive the defense in any action for specific performance that a
remedy at law would be adequate.



                                      -14-

   16

         (b) No Inconsistent Agreements. The Company shall not enter into any
agreement with respect to its securities that is inconsistent with the rights
granted to the holders of Transfer Restricted Securities in this Agreement or
otherwise conflicts with the provisions hereof.

        (c) No Piggyback on Registrations. The Company shall not grant to any of
its security holders (other than the Holders of Transfer Restricted Securities
in such capacity) the right to include any of its securities in any Shelf
Registration Statement other than Transfer Restricted Securities, except any
such rights that exist as of the date hereof.

        (d) Amendments and Waivers. The provisions of this Agreement, including
the provisions of this sentence, may not be amended, modified or supplemented,
and waivers or consents to departures from the provisions hereof may not be
given, without the written consent of the Holders of a majority of the then
outstanding Transfer Restricted Securities (on a fully convened basis);
provided, however, that, for the purposes of this Agreement, Transfer Restricted
Securities that are owned, directly or indirectly, by either the Company or an
Affiliate of the Company shall not be deemed outstanding.

        (e) Notices. All notices and other communications provided for herein
shall be made in writing by hand-delivery, next-day air courier, certified
first-class mail, return receipt requested, telex or telecopy:

         (i)      if to the Company, as provided in the Purchase Agreement,

         (ii)     if to the Initial Purchasers, as provided in the Purchase
                  Agreement, or

         (iii)    if to any other person who is then the registered Holder of
                  any Transfer Restricted Securities, to the address of such
                  Holder as it appears in the Note or Common Stock register of
                  the Company.

        Except as otherwise provided in this Agreement, all such communications
shall be deemed to have been duly given: when delivered by hand, if personally
delivered; one Business Day after being timely delivered to a next-day air
courier; five Business Days after being deposited in the mail, postage prepaid,
if mailed; when answered back, if telexed; and when receipt is acknowledged by
the recipient's telecopier machine, if telecopied.

        (f) Successors and Assigns. This Agreement shall inure to the benefit of
and be binding upon the successors and assigns of each of the parties, including
subsequent Holders of Transfer Restricted Securities provided such subsequent
Holders acquire such Transfer Restricted Securities directly from such Holder
but without the need for an express assignment.

        (g) Counterparts. This Agreement may be executed in any number of
counterparts and by the parties hereto in separate counterparts, each of which
when so executed shall be deemed to be an original and, all of which taken
together shall constitute one and the same Agreement.

        (h) Governing Law. This Agreement shall be governed by and construed in
accordance with the laws of the State of New York, as applied to contracts made
and performed within the State of New York without regard to principles of
conflicts of law. Any action or proceeding seeking to enforce any provision of,
or based on any right arising out of, this Agreement may be brought against



                                      -15-

   17

any of the parties only in the courts of the State of New York, County of New
York, or, if it can acquire jurisdiction, only in the United States District
Court for the Southern District of New York.

         (i) Severability. The remedies provided herein are cumulative and not
exclusive of any remedies provided by law. If any term, provision, covenant or
restriction of this Agreement is held by a court of competent jurisdiction to be
invalid, illegal, void or unenforceable, the remainder of the terms, provisions,
covenants and restrictions set forth herein shall remain in full force and
effect and shall in no way be affected, impaired or invalidated, and the parties
hereto shall use their reasonable efforts to find and employ an alternative
means to achieve the same or substantially the same result as that contemplated
by such term, provision, covenant or restriction. It is hereby stipulated and
declared to be the intention of the parties that they would have executed the
remaining terms, provisions, covenants and restrictions without including any of
such that may be hereafter declared invalid, illegal, void or unenforceable.

         (j) Headings. The headings in this Agreement are for convenience of
reference only and shall not limit or otherwise affect the meaning hereof. All
references made in this Agreement to "Section" and "paragraph" refer to such
Section or paragraph of this Agreement, unless expressly stated otherwise.

         (k) Attorneys' Fees. In any action or proceeding brought to enforce any
provision of this Agreement, or where any provision hereof is validly asserted
as a defense, the prevailing party, as determined by the court, shall be
entitled to recover its reasonable attorneys' fees in addition to any other
available remedy.

IN WITNESS WHEREOF, the parties have caused this Registration Rights Agreement
to be duly executed as of the date first written above.


                                   SMARTALK TELESERVICES, INC.

                                   By:    /s/ DAVID A. HAMBURGER
                                          ----------------------------------
                                          Name:  David A. Hamburger
                                          ----------------------------------
                                          Title: Vice President
                                          ----------------------------------

The foregoing Registration Rights Agreement is hereby confirmed and accepted as
of the date first above written.

DONALDSON, LUFKIN & JENRETTE
SECURITIES CORPORATION

By: /s/ DAVID PHILIP COSTANZO     
    -----------------------------------
      
    Name:   David Philip Costanzo
            -------------------------
    Title:  Vice President
            -------------------------

SALOMON BROTHERS INC

By: 
      ---------------------------------
      Name:
              -------------------------
      Title:
              -------------------------



                                      -16-
   18
any of the parties only in the courts of the State of New York, County of New
York, or, if it can acquire jurisdiction, only in the United States District
Court for the Southern District of New York.

         (i) Severability. The remedies provided herein are cumulative and not
exclusive of any remedies provided by law. If any term, provision, covenant or
restriction of this Agreement is held by a court of competent jurisdiction to be
invalid, illegal, void or unenforceable, the remainder of the terms, provisions,
covenants and restrictions set forth herein shall remain in full force and
effect and shall in no way be affected, impaired or invalidated, and the parties
hereto shall use their reasonable efforts to find and employ an alternative
means to achieve the same or substantially the same result as that contemplated
by such term, provision, covenant or restriction. It is hereby stipulated and
declared to be the intention of the parties that they would have executed the
remaining terms, provisions, covenants and restrictions without including any of
such that may be hereafter declared invalid, illegal, void or unenforceable.

         (j) Headings. The headings in this Agreement are for convenience of
reference only and shall not limit or otherwise affect the meaning hereof. All
references made in this Agreement to "Section" and "paragraph" refer to such
Section or paragraph of this Agreement, unless expressly stated otherwise.

         (k) Attorneys' Fees. In any action or proceeding brought to enforce any
provision of this Agreement, or where any provision hereof is validly asserted
as a defense, the prevailing party, as determined by the court, shall be
entitled to recover its reasonable attorneys' fees in addition to any other
available remedy.

IN WITNESS WHEREOF, the parties have caused this Registration Rights Agreement
to be duly executed as of the date first written above.


                                   SMARTALK TELESERVICES, INC.

                                   By:    
                                       ---------------------------------
                                       Name:  
                                             --------------------------
                                       Title: 
                                             --------------------------

The foregoing Registration Rights Agreement is hereby confirmed and accepted as
of the date first above written.

DONALDSON, LUFKIN & JENRETTE
SECURITIES CORPORATION

By:   
      ---------------------------------
      Name:   
              -------------------------
      Title:  
              -------------------------

SALOMON BROTHERS INC

By:   /s/ WILLIAM L. VENNISH
      ---------------------------------
      Name:   William L. Vennish
              -------------------------
      Title:  Associate
              -------------------------



                                      -16-