Exhibit 99.3
                                                                    ------------

                                                                  EXECUTION COPY

PROMISSORY NOTE AND SECURITY AGREEMENT

PROMISSORY NOTE
(THE "NOTE")


$36,750,000                                               New York, New York
                                                          December 28, 2005


FOR VALUE RECEIVED, the undersigned, VOLT DELTA RESOURCES, LLC. ("VoltDelta"), a
Nevada Limited Liability  Company,  hereby  unconditionally,  promises to pay to
Nortel Networks by wire transfer to the Nortel Account  ((Capitalized terms used
herein but not  defined  shall have the  meanings  ascribed to such terms in the
Letter of Agreement  executed by Nortel,  VoltDelta and other parties thereto of
even date (the  "Letter of  Agreement"))  on  February  15,  2006 (the  "Payment
Date"),  in lawful  money of the  United  States of America  and in  immediately
available  funds,  the principal  amount of thirty six million seven hundred and
fifty thousand dollars ($36,750,000) (the "Principal Amount") without interest.

1.   Interest Rate.  From and after the occurrence and during the continuance of
     any Event of Default  (as  defined  below),  interest  shall  accrue on the
     Principal  Amount at a per annum rate of  eighteen  percent  (18%) and such
     interest  shall be calculated on the basis of a 360-day year  consisting of
     twelve 30-day months (hereinafter "Interest").

2.   Events of Default.  An "Event of Default" shall occur if VoltDelta defaults
     in the  payment  of the  Principal  Amount  when and to the extent the same
     becomes due and payable but only if such default  continues for a period of
     ten (10) days.

3.   Security Repayment.  Payment of this Note is secured by the Nortel Networks
     Membership Interest (the "Collateral"). Provided that by acceptance of this
     Note,  Nortel  Networks and any  transferee or assignee of this Note agrees
     that  unless  and until  there is an Event of Default it shall not file any
     financing statements to perfect its security interest in the Collateral.

4.   Remedies.  Upon an Event of  Default:  (a) all sums  owing  under this Note
     shall become  immediately  due and payable by VoltDelta or the guarantor of
     this Note; (b) Nortel Networks,  or any permitted transferee or assignee of
     this Note (the  "Holder"),  shall be entitled to make any and all necessary
     filings,  including financing statements,  with the appropriate  government
     entities to perfect its security  interest in the Collateral and the Holder
     shall hold the  Collateral  until such time as VoltDelta  or its  guarantor
     pays the  Holder all  amounts  due under  this Note  including  any and all
     Interest  accrued  thereon;  and (c) upon the Holder receiving all payments
     due under  this  Note,  it shall  promptly  release  all liens and make any
     necessary  filings  to  release  any and all  liens  with  the  appropriate
     government authorities.  . Except for the provisions of the LOA at Sections
     7 (Company  Indemnification)  and 8 (Attorneys' Fees), the remedies set out
     in the




     preceding  paragraphs  (a), (b) and (c) shall be Nortel  Networks' sole and
     exclusive remedy under this Note and the LOA, and Nortel Networks shall not
     have any other rights of a secured  creditor,  including but not limited to
     the right to sell the Collateral  other than in accordance  with Article IV
     of the Members' Agreement.

5.   Transfer of this Note.

     a.   Subject to the terms  hereof and the delivery of the  Certificates  to
          VoltDelta, Nortel Networks may not Transfer, sell or assign this Note,
          except to one or more of its affiliates or a banking institution.

     b.   VoltDelta shall not delegate performance of its obligations under this
          Note without the prior written consent of Nortel,  which consent shall
          not be unreasonably withheld.

6.   Jurisdiction and Venue

     This Note shall be construed in accordance  with and governed by the law of
     the State of New York, without regard to conflict of laws principles of New
     York  State  law  other  than  Section  5-1401  of  the  New  York  General
     Obligations Law. The parties hereto (i) consent to submit themselves to the
     personal jurisdiction of any state or federal court located in the City and
     County of New York,  State of New York with  respect  to any claim  arising
     from this Note and (ii)  agree  that it will not  attempt to deny or defeat
     such  personal  jurisdiction  by motion or other request for leave from any
     such court. The parties hereto  irrevocably and  unconditionally  waive any
     objection  to the  laying of venue of any such  action in any such state or
     federal court, and hereby further irrevocably and unconditionally waive and
     agree not to plead or claim in any such court that any such action  brought
     in any such court has been brought in an inconvenient forum.


                                            VOLT DELTA RESOURCES, LLC.


                                            By: /s/ Ronald Kochman
                                               ---------------------------------
                                               Name: Ronald Kochman
                                               Title: Vice President

The  undersigned  hereby  unconditionally  and  irrevocably  guarantees full and
timely  payment  (and not merely  collection)  of the within  Note by VOLT DELTA
RESOURCES, LLC

                                            VOLT INFORMATION SCIENCES, INC.

                                            By: /s/ Ronald Kochman
                                               ---------------------------------
                                               Name: Ronald Kochman
                                               Title: Vice President