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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 10)


                                  TRINSIC, INC.
                                (Name of Issuer)

                                  Common Stock
                         (Title of Class of Securities)

                                    988792107
                                 (CUSIP Number)

                               LAWRENCE C. TUCKER
                          Brown Brothers Harriman & Co.
                                  140 Broadway
                               New York, New York
                                 (212) 483-1818
                     (Name, Address and Telephone Number of
                      Person Authorized to Receive Notices
                               and Communications)

                                February 5, 2007
                     (Date of Event which Requires Filing of
                                 this Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box [ ].

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).

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CUSIP No. 988792107                SCHEDULE 13D              Page 2 of 9 Pages
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1    NAME OF REPORTING PERSON

     THE 1818 FUND III, L.P.
--------------------------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP              (a)    [X]
                                                                   (b)    [_]
--------------------------------------------------------------------------------
3    SEC USE ONLY

--------------------------------------------------------------------------------
4    SOURCE OF FUNDS

     OO
--------------------------------------------------------------------------------
5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
     ITEMS 2(D) OR 2(E)
                                                                          [_]
--------------------------------------------------------------------------------
6    CITIZENSHIP OR PLACE OF ORGANIZATION

     DELAWARE
--------------------------------------------------------------------------------

              NUMBER OF
                                    7     SOLE VOTING POWER
               SHARES
                                          -0-
            BENEFICIALLY        ------------------------------------------------
                                    8     SHARED VOTING POWER
              OWNED BY
                                          14,592,428 See Item 5
                EACH            ------------------------------------------------
                                    9     SOLE DISPOSITIVE POWER
              REPORTING
                                          -0-
               PERSON           ------------------------------------------------
                                    10    SHARED DISPOSITIVE POWER
                WITH
                                          14,592,428 See Item 5
--------------------------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     14,592,428 See Item 5.
--------------------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

                                                                          [_]
--------------------------------------------------------------------------------
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     79.1%
--------------------------------------------------------------------------------
14   TYPE OF REPORTING PERSON

     PN
--------------------------------------------------------------------------------



CUSIP No. 988792107                SCHEDULE 13D              Page 3 of 9 Pages
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1    NAME OF REPORTING PERSON

     BROWN BROTHERS HARRIMAN & CO.
--------------------------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP              (a)    [X]
                                                                   (b)    [_]
--------------------------------------------------------------------------------
3    SEC USE ONLY

--------------------------------------------------------------------------------
4    SOURCE OF FUNDS

     OO
--------------------------------------------------------------------------------
5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
     ITEMS 2(D) OR 2(E)
                                                                          [_]
--------------------------------------------------------------------------------
6    CITIZENSHIP OR PLACE OF ORGANIZATION

     NEW YORK
--------------------------------------------------------------------------------

              NUMBER OF
                                    7     SOLE VOTING POWER
               SHARES
                                          -0-
            BENEFICIALLY        ------------------------------------------------
                                    8     SHARED VOTING POWER
              OWNED BY
                                          14,592,428 See Item 5
                EACH            ------------------------------------------------
                                    9     SOLE DISPOSITIVE POWER
              REPORTING
                                          -0-
               PERSON           ------------------------------------------------
                                    10    SHARED DISPOSITIVE POWER
                WITH
                                          14,592,428 See Item 5
--------------------------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     14,592,428 See Item 5.
--------------------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

                                                                          [_]
--------------------------------------------------------------------------------
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     79.1%
--------------------------------------------------------------------------------
14   TYPE OF REPORTING PERSON

     PN
--------------------------------------------------------------------------------



CUSIP No. 988792107                SCHEDULE 13D              Page 4 of 9 Pages
--------------------------------------------------------------------------------

1    NAME OF REPORTING PERSON

     T. MICHAEL LONG
--------------------------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP              (a)    [X]
                                                                   (b)    [_]
--------------------------------------------------------------------------------
3    SEC USE ONLY

--------------------------------------------------------------------------------
4    SOURCE OF FUNDS

     OO
--------------------------------------------------------------------------------
5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
     ITEMS 2(D) OR 2(E)
                                                                          [_]
--------------------------------------------------------------------------------
6    CITIZENSHIP OR PLACE OF ORGANIZATION

     UNITED STATES
--------------------------------------------------------------------------------

              NUMBER OF
                                    7     SOLE VOTING POWER
               SHARES
                                          -0-
            BENEFICIALLY        ------------------------------------------------
                                    8     SHARED VOTING POWER
              OWNED BY
                                          14,592,428 See Item 5
                EACH            ------------------------------------------------
                                    9     SOLE DISPOSITIVE POWER
              REPORTING
                                          -0-
               PERSON           ------------------------------------------------
                                    10    SHARED DISPOSITIVE POWER
                WITH
                                          14,592,428 See Item 5
--------------------------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     14,592,428 See Item 5.
--------------------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

                                                                          [_]
--------------------------------------------------------------------------------
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     79.1%
--------------------------------------------------------------------------------
14   TYPE OF REPORTING PERSON

     IN
--------------------------------------------------------------------------------



CUSIP No. 988792107                SCHEDULE 13D              Page 5 of 9 Pages
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1    NAME OF REPORTING PERSON

     LAWRENCE C. TUCKER
--------------------------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP              (a)    [X]
                                                                   (b)    [_]
--------------------------------------------------------------------------------
3    SEC USE ONLY

--------------------------------------------------------------------------------
4    SOURCE OF FUNDS

     OO
--------------------------------------------------------------------------------
5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
     ITEMS 2(D) OR 2(E)                                                   [_]

--------------------------------------------------------------------------------
6    CITIZENSHIP OR PLACE OF ORGANIZATION

     UNITED STATES
--------------------------------------------------------------------------------

              NUMBER OF
                                    7     SOLE VOTING POWER
               SHARES
                                          2,132
            BENEFICIALLY        ------------------------------------------------
                                    8     SHARED VOTING POWER
              OWNED BY
                                          14,592,428  See Item 5
                EACH            ------------------------------------------------
                                    9     SOLE DISPOSITIVE POWER
              REPORTING
                                          2,132
               PERSON           ------------------------------------------------
                                    10    SHARED DISPOSITIVE POWER
                WITH
                                          14,592,428  See Item 5
--------------------------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     14,594,560  See Item 5.
--------------------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

                                                                          [_]
--------------------------------------------------------------------------------
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     79.1%
--------------------------------------------------------------------------------
14   TYPE OF REPORTING PERSON

     IN
--------------------------------------------------------------------------------




CUSIP No. 988792107                SCHEDULE 13D             Page 6 of 9 Pages
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EXPLANATORY NOTE

                This Amendment No. 10 ("AMENDMENT  NO. 10") to Schedule 13D is
filed by the  undersigned  to amend and  supplement  the Schedule 13D filed on
November  20, 2000 (the  "ORIGINAL  13D"),  as amended by  Amendment  No. 1 to
Schedule 13D filed on July 12, 2001  ("AMENDMENT  NO. 1"),  Amendment No. 2 to
Schedule 13D filed on August 9, 2001  ("AMENDMENT NO. 2"),  Amendment No. 3 to
Schedule 13D filed on August 26, 2004 ("AMENDMENT NO. 3"),  Amendment No. 4 to
Schedule 13D filed on December 3, 2004 ("AMENDMENT NO. 4"), Amendment No. 5 to
Schedule 13D filed on July 18, 2005  ("AMENDMENT  NO. 5"),  Amendment No. 6 to
Schedule 13D filed on September 2, 2005  ("AMENDMENT NO. 6"),  Amendment No. 7
to Schedule 13D filed on October 3, 2005 ("AMENDMENT NO. 7"),  Amendment No. 8
to Schedule 13D filed on December 20, 2005  ("AMENDMENT NO. 8"), and Amendment
No. 9 to the  Schedule  13D filed on January  18,  2006  ("AMENDMENT  NO. 9"),
relating to the common stock (the "COMMON  STOCK"),  par value $.01 per share,
issued by  Trinsic,  Inc.,  a Delaware  corporation  (the  "COMPANY").  Unless
otherwise  indicated,  all  capitalized  terms shall have the same  meaning as
provided in the Original 13D as amended by Amendment  No.1,  Amendment  No. 2,
Amendment No.3,  Amendment  No.4,  Amendment No. 5, Amendment No. 6, Amendment
No. 7, Amendment No. 8 and Amendment No. 9.

ITEM 1.         SECURITY AND ISSUER.

                No Change.

ITEM 2.         IDENTITY AND BACKGROUND.

                No Change.

ITEM 3.         SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

                No Change.




CUSIP No. 988792107                SCHEDULE 13D             Page 7 of 9 Pages
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ITEM 4.         PURPOSE OF TRANSACTION.

                No Change.

ITEM 5.         INTEREST IN SECURITIES OF THE ISSUER.

                Item 5 is hereby amended and  supplemented  by the addition of
the following:

                As  of  the  date  hereof,   based  on  calculations  made  in
accordance with Rule 13d-3  promulgated under the Exchange Act and there being
18,453,983  shares  of Common  Stock  outstanding  (as of  December  20,  2006
according to the Company's  Information  Statement on Schedule 14C as filed by
the Company with the Securities and Exchange Commission on December 22, 2006),
the number of shares of Common Stock the Fund,  BBH,  Long and Tucker would be
deemed to own and the percent of the outstanding shares of Common Stock are as
follows:

                                SHARES                       PERCENTAGE
                              ----------                     ----------
Fund                          14,592,428                       79.1%
BBH                           14,592,428                       79.1%
Long                          14,592,428                       79.1%
Tucker                        14,594,560                       79.1%


ITEM 6.         CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH
                RESPECT TO THE COMMON STOCK OF THE ISSUER.

                Item 6 is hereby amended and  supplemented  by the addition of
the following:

                On  February  5,  2007,  in  consideration  for a loan  in the
aggregate  principal  amount of  $80,000  made by the Fund to the  Company  on
January 31, 2007, the Company executed a demand promissory note (the "DEMAND



CUSIP No. 988792107                SCHEDULE 13D             Page 8 of 9 Pages
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NOTE") in favor of the Fund in an  aggregate  principal  amount of $80,000 and
bearing interest at a rate of sixteen percent (16%) per annum. Interest on the
Demand Note accrues daily and will be added to the unpaid  principal amount of
the Demand Note. The Note is payable immediately upon demand by the Fund.

                The foregoing  description of the Demand Note does not purport
to be complete  and is  qualified  in its  entirety by reference to the Demand
Note, a copy of which is attached  hereto as Exhibit 1 to this  Amendment  No.
10.


ITEM 7.         MATERIAL TO BE FILED AS EXHIBITS.

                1.   Demand  Promissory  Note,  dated as of February 5, 2007,
                     made by the Company in favor of The 1818 Fund III, L.P.





CUSIP No. 988792107                SCHEDULE 13D             Page 9 of 9 Pages
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                                    SIGNATURE

          After reasonable inquiry and to the best of its knowledge and belief,
each of the undersigned certifies that the information set forth in this
statement is true, complete and correct.

Dated:  February 12, 2007

                                         THE 1818 FUND III, L.P.

                                         By: Brown Brothers Harriman & Co.,
                                             General Partner


                                         By: /s/ Lawrence C. Tucker
                                             --------------------------------
                                             Name:  Lawrence C. Tucker
                                             Title: Partner



                                         BROWN BROTHERS HARRIMAN & CO.


                                         By: /s/ Lawrence C. Tucker
                                             --------------------------------
                                             Name:  Lawrence C. Tucker
                                             Title: Partner


                                         /s/ T. Michael Long
                                         ------------------------------------
                                                    T. Michael Long


                                         /s/ Lawrence C. Tucker
                                         ------------------------------------
                                                    Lawrence C. Tucker