EXHIBIT 10.1




                               SECURED PROMISSORY NOTE


US $2,000,000                                                   February 2, 1998


     FOR VALUE RECEIVED AND INTENDING TO BE LEGALLY BOUND HEREBY, CTI Data 
Solutions (International) Ltd. ("Borrower"), an English company and a 
wholly-owned subsidiary of CTI Group (Holdings), Inc. ("CTIG"), a Delaware 
corporation, promises to pay to the order of Siemens plc ("Lender"), at such 
address or at such location as Lender may designate from time to time, the 
principal sum of Two Million Dollars ($2,000,000.00), together with interest 
as set forth below, until the date on which the principal amount is paid in 
full in accordance with the terms of this Promissory Note (the "Note").   

     Reference is made to that Asset Purchase Agreement, Security Agreement, 
Debenture and Pledge Agreement of even date herewith among Borrower, CTIG and 
Lender (the "Asset Purchase Agreement", the "Security Agreement", the "Charge 
Agreement" and the "Pledge Agreement", respectively) for a statement of the 
other terms, conditions and covenants to which this Note is subject. 
Capitalized terms appearing herein and not otherwise defined shall have the 
respective meanings given to such terms in the Asset Purchase Agreement, the 
Security Agreement and/or the Pledge Agreement.

     All outstanding principal and any accrued and unpaid interest thereon 
due hereunder shall be due and payable on February 2, 2001 (the "Maturity 
Date"). 

     1.  Interest.  During the period beginning on the date hereof and 
ending on the Maturity Date, interest shall accrue daily on the outstanding 
principal amount hereunder at a simple rate of ten percent (10%) per annum.  
Interest shall be calculated hereunder for the actual number of days that the 
principal is outstanding, based on a three hundred sixty (360) day year.  
Interest shall continue to accrue on the principal balance hereof at rate of 
interest specified in this Note, notwithstanding any demand for payment, 
acceleration and/or the entry of any judgment against Borrower, until all 
principal owing hereunder is paid in full.

     2.  Payment.   Except as set forth in Sections 3 and 5 hereof, no 
principal payments shall be due on the Note until the Maturity Date.  Accrued 
interest shall be paid to the Lender quarterly in arrears on April 1, July 1, 
October 1 and January 1 ("Interest Payment Dates") of each year.  All 
payments of principal and interest shall be made by cash or certified check 
to Lender at the address designated in writing by Lender. 



     
     3.  Prepayments.  This Note may be prepaid in whole or in part at any 
time and from time to time without payment of a penalty or premium provided 
that each such prepayment is accompanied by interest on the amount of such 
prepayment calculated at the rate of interest set forth in this Note to the 
date of such prepayment.  The Borrower hereby agrees to cause CTIG to use 
commercially reasonable efforts to sell, within twelve (12) months of the 
date hereof, its United States telemanagement service bureau and to apply the 
net cash proceeds from such sale, up to an amount equal to the Required Cash 
Amount (as the term "Required Cash Amount" is defined in the Asset Purchase 
Agreement), toward reducing the principal amount outstanding under this Note. 
 The foregoing shall in no way limit the obligations of Borrower to repay 
principal and pay interest in accordance with the terms of this Note, which 
are absolute and unconditional.

     4.  Events of Default.  Each of the following shall be an "Event of 
Default" hereunder:  (1) the non-payment when due of any amount of principal 
or interest payable under this Note; or (2) if Borrower becomes insolvent or 
makes an assignment for the benefit of creditors, or if any petition is filed 
by or against Borrower under any provision of any state or federal law or 
statute alleging that Borrower is insolvent or unable to pay debts as they 
mature or under any provision of the United States Bankruptcy Code, as 
amended.

     5.  Lender's Rights Upon Default.  Upon the occurrence of any Event of 
Default and without the necessity of giving any prior written notice to 
Borrower, Lender may do any one or all of the following: (a) accelerate the 
maturity of this Note and all amounts payable hereunder and demand immediate 
payment thereof and (b) exercise all of the rights, benefits, privileges and 
remedies of a secured party under the laws of the United Kingdom (or under 
the laws of any other jurisdiction in which any collateral security for the 
obligations of the Borrower under this Note may be located) and all of 
Lender's rights and remedies under the Security Agreement and/or the Pledge 
Agreement.

     6.  Guaranty.  Pursuant to the Guaranty of even date herewith of CTIG 
in favor of Lender, repayment of principal of and payment of interest in 
unconditionally guaranteed by CTIG.

     7.  Attorneys' Fees and Costs.  In the event that Lender engages an 
attorney to represent it in connection with (a) any default by Borrower under 
the Note, (b) the enforcement of any of Lender's rights and remedies under 
the Note, or (c) any bankruptcy or other insolvency proceedings commenced by 
or against Borrower, then Borrower shall be liable to and shall reimburse 
Lender for all reasonable attorneys' fees, costs and expenses incurred by 
Lender. Borrower shall also be liable and shall also reimburse Lender for all 
other costs and expenses incurred by Lender in connection with the 
collection, preservation and liquidation of any property acting as collateral 
security under the Note and/or in the enforcement of any of Borrower's 
obligations under the Note.

     8.  Choice of Law.  This Note has been delivered to and accepted by 
Lender in and shall be governed by the laws of the United Kingdom. Borrower 
agrees to the exclusive jurisdiction of the courts located in the United 
Kingdom without regard to principles of conflicts of laws, in connection 


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with any matter arising hereunder, including the collection and enforcement 
hereof, except with regard to Lender's rights and remedies concerning any of 
the collateral security for the obligations of the Borrower under this Note.  
With respect to such collateral security, the parties hereto hereby agree to 
the exclusive jurisdiction of the courts located in, and to the application 
of the laws of, the Commonwealth of Pennsylvania.

     9.  Miscellaneous.  If any provision of this Note shall for any reason 
be held to be invalid or unenforceable, such invalidity or unenforceability 
shall not affect any other provision hereof.  Upon any such determination 
that any provision is invalid or incapable of being enforced, such provision 
shall be construed so as to effect the original intent of the parties as 
closely as possible in a permissible manner in order that the transactions 
contemplated hereby are consummated to the greatest extent possible.  The 
waiver of any Event of Default or the failure of Lender to exercise any right 
or remedy to which it may be entitled shall not be deemed a waiver of any 
subsequent Event of Default or of Lender's right to exercise that or any 
other right or remedy to which Lender is entitled.

     IN WITNESS WHEREOF, Borrower has duly executed this Note the day and 
year first above written and has hereunto set hand and seal.


ATTEST:                               CTI DATA SOLUTIONS (INTERNATIONAL) LTD.


By:  /s/ Mary Ann Davis               By: /s/ Anthony Johns     
     -----------------------------        ----------------------------
      Name: Mary Ann Davis                Name: Anthony Johns
      Title:   Corporate Secretary        Title: President


[Corporate Seal]
                              

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