Exhibit (9)(v)

                 FOURTH AMENDMENT OF VOTING TRUST AGREEMENT

     This Fourth Amendment of Voting Trust Agreement (the "Amendment") is for
the purpose of amending the Voting Trust Agreement dated the 10th day of
December, 1993 (the "Voting Trust") and amended on October 23, 1995, July 2,
1996 and September 20, 1996 and is made and entered into at Salt Lake City,
Utah, effective as of the 24th day of September, 1996, by and among fonix
Corporation, a Delaware corporation, whose principal place of business is 1225
Eagle Gate Tower, 60 East South Temple, Salt Lake City, Utah 84111 (the
"Company"), which is the successor corporation of Phonic Technologies, Inc., a
Utah corporation ("PTI"), and the following stockholders in the Company: Stephen
M. Studdert, whose address is 1225 Eagle Gate Tower, 60 East South Temple, Salt
Lake City, Utah 84111 ("Studdert"), Thomas A. Murdock, whose address is 1225
Eagle gate Tower, 60 East South Temple, Salt Lake City, Utah 84111 ("Murdock"),
Roger D. Dudley, whose address is 1225 Eagle Gate Tower, 60 East South Temple,
Salt Lake City, Utah, 84111 ("Dudley"), Beesmark Investments, L.C., a Utah
limited liability company ("Beesmark") whose principal place of business is 1361
South 740 East, Orem, Utah 84058; and Studdert Companies Corporation, a Utah
corporation, whose principal place of business is 1225 Eagle Gate Tower, 60 East
South Temple, Salt Lake City, Utah 84111 ("SCC") (collectively the
"Stockholders"), and Thomas A. Murdock, as Trustee, whose address is 1225 Eagle
Gate Tower, 60 East South Temple, Salt Lake City, Utah 84111, and his successors
in trust (hereinafter called the "Trustee").

                                  RECITALS

     WHEREAS, the Voting Trust was established December 10, 1993, with a
termination date of September 30, 1996; and

     WHEREAS, in May of 1994 PTI was merged into a subsidiary of the Company
upon which event the Trustee received shares of the Company on behalf of
Studdert, Murdock and Dudley; and 

     WHEREAS, the Voting Trust was amended on October 23, 1995 to add as
shareholder parties thereto SCC and Beesmark, to extend the termination date to
September 30, 1999 and in certain substantive respects;

     WHEREAS, the Voting Trust was further amended on July 2, 1996 and
September 20, 1996; and

     WHEREAS, the Stockholders presently desire to further amend the Voting
Trust as is set forth herein; and 

     NOW, THEREFORE, in consideration of the mutual promises herein, the
parties hereto hereby agree as follows:

      1.  A paragraph 12(c) is added to Section 12 of the Voting Trust, as
amended on October 23, 1995,  July 2, 1996 and September 20, 1996, which
paragraph 12(c) shall read as follows:

            "c.As to any shares deposited into the Voting
          Trust and subsequently pledged by the Trustee pursuant
          to the authority granted the Trustee by paragraph
          10(c), as amended on September 20, 1996, this Agreement
          shall terminate upon the subsequent foreclosure of any
          security interest granted by the Trustee in such
          shares."


      2.  The parties hereto direct the Trustee to file a copy of this Fourth
Amendment with the principal office of the Company in Salt Lake City, Utah, as
directed by Section 1 of the Voting Trust Agreement.

     IN WITNESS WHEREOF, the Company, the Trustee and the Stockholders have
signed this Fourth Amendment and have stated the number of shares of capital
stock of the Company on deposit with the Trustee, respectively, by them.

     THE COMPANY:

     fonix Corporation


                                       By: /s/ Thomas A. Murdock
                                          -----------------------------------
                                           Thomas A. Murdock, President
         
Attest:


   /s/ Roger D. Dudley
---------------------------------
 Roger D. Dudley, Secretary



                                       TRUSTEE:


                                         /s/ Thomas A. Murdock
                                       -----------------------------------
                                       Thomas A. Murdock, individually


NUMBER OF SHARES:                       SHAREHOLDERS:


                                         /s/ Stephen M. Studdert
------------------------               ------------------------------------
                                       Stephen M. Studdert, individually



                                         /s/ Thomas A. Murdock
------------------------               ------------------------------------
                                       Thomas A. Murdock, individually


                                         /s/ Roger D. Dudley
------------------------               ------------------------------------
                                       Roger D. Dudley, individually


-------------------------              STUDDERT COMPANIES CORPORATION


                                       By: /s/ Stephen M. Studdert
                                           -------------------------------
                                       Stephen M. Studdert, President

<PAGE>

--------------------                   BEESMARK INVESTMENTS, L.C.



                                       By: /s/ Alan C. Ashton
                                          --------------------------------
                                          Alan C. Ashton, Manager