TELTRONICS INC
EXHIBIT 10 - PROMISSORY NOTE
<DOCUMENT>
<TYPE>EX-10
<SEQUENCE>5
<FILENAME>dkm396c.txt
<DESCRIPTION>EXHIBIT 10 - PROMISSORY NOTE
<TEXT>
                                TELTRONICS, INC.

                                 PROMISSORY NOTE


                                                         $2,250,000 (US dollars)
                                                         Sarasota, Florida
June 4, 2003


         FOR VALUE RECEIVED, Teltronics, Inc. (the "Company"), a Delaware
corporation and having an address at 2150 Whitfield Industrial Way, Sarasota,
Florida 34243, hereby promises to pay Tri-Link Technologies Inc. a corporation
incorporated under the laws of Canada and having an address of #301-8988
Fraserton Court, Burnaby, British Columbia V5J 5H8 or Tri-Link's Securityholders
(the "Holders"), the principal sum of Two Million Two Hundred and Fifty Thousand
Dollars (US$2,250,000) (the "Principal") with interest calculated from the date
of this promissory note on the balance of such sum and payable at the same
place, both before and after maturity, default, and judgment, at the nominal
rate per annum of Six and One Half percent (6.5%) (the "Interest") at the same
time and place.

         The Principal and Interest shall be payable by the Company to the
Holders in twelve quarterly installments as detailed in the attached schedule.

         The Principal or any part thereof may be paid in advance at any time
without notice, bonus or penalty. This promissory note shall be governed by and
construed in accordance with the laws of the Province of British Columbia and
the laws of Canada applicable therein.

         IN WITNESS WHEREOF, the undersigned has caused this promissory note to
be duly signed as of the 4th day of June 2003.

                                        TELTRONICS, INC.


                                        By:   /s/ Ewen Cameron
                                           -------------------------------------
                                              Ewen Cameron, President and CEO



<PAGE>




<TABLE>
<CAPTION>
                                                                                  Total
                                  Principal               Interest                Payment           Date

<S>                               <C>                     <C>                    <C>            <C>
Payment 1                         187,500.00              36,562.50              224,062.50     August 1, 2003
Payment 2                         187,500.00              33,515.63              221,015.63     November 1, 2003
Payment 3                         187,500.00              30,468.75              217,968.75     February 1, 2004
Payment 4                         187,500.00              27,421.88              214,921.88     May 1, 2004
Payment 5                         187,500.00              24,375.00              211,875.00     August 1, 2004
Payment 6                         187,500.00              21,328.13              208,828.13     November 1, 2004
Payment 7                         187,500.00              18,281.25              205,781.25     February 1, 2005
Payment 8                         187,500.00              15,234.38              202,734.38     May 1, 2005
Payment 9                         187,500.00              12,187.50              199,687.50     August 1, 2005
Payment 10                        187,500.00               9,140.63              196,640.63     November 1, 2005
Payment 11                        187,500.00               6,093.75              193,593.75     February 1, 2006
Payment 12                        187,500.00               3,046.88              190,546.88     May 1, 2006
</TABLE>



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</TEXT>
</DOCUMENT>
