Document:

<PAGE>
                                                                     Exhibit 4.6

                                                               EXECUTION VERSION

                          COPYRIGHT SECURITY AGREEMENT

     This COPYRIGHT SECURITY AGREEMENT (this "Copyright Security Agreement") is
made this 9th day of September, 2004, among the Grantors listed on the signature
pages hereof (the "Grantors"), and The Bank of New York Trust Company, N.A., in
its capacity as Trustee under the Indenture (as defined below) (the "Trustee").

                                   WITNESSETH:

     WHEREAS, pursuant to (a) that certain Indenture dated as of September 9,
2004 (as amended, restated, supplemented or otherwise modified from time to
time, the "Indenture") among Securus Technologies, Inc., a Delaware corporation,
as issuer (the "Company"), the subsidiaries of the Company party thereto as
guarantors (the "Guarantors") and the Trustee, and (b) the Purchase Agreement
dated as of August 18, 2004 (the "Purchase Agreement"), among the Company, the
Guarantors, Credit Suisse First Boston LLC and Morgan Stanley & Co. Incorporated
(the "Initial Purchasers"), the Company is issuing $154,000,000 aggregate
principal amount of its Second-Priority Senior Secured Notes Due 2011 (the
"Notes") which will be guaranteed on a senior secured basis by the Guarantors;

     WHEREAS, in order to induce the Initial Purchasers to enter into the
Purchase Agreement and to induce the Initial Purchasers to purchase the Notes,
the Grantors have agreed to grant a continuing Lien on the Collateral in order
to secure the prompt and complete payment, observance and performance of the
Secured Obligations, by the granting of the security interest contemplated by
the Security Agreement (as defined below);

     WHEREAS, the Trustee is willing to enter into the Indenture, but only upon
the condition, among others, that the Grantor shall have executed and delivered
to the Trustee, for the benefit of the Noteholders, that certain Security
Agreement dated as of September 9, 2004 (including all annexes, exhibits or
schedules thereto, as from time to time amended, restated, supplemented or
otherwise modified, the "Security Agreement"); and

     WHEREAS, pursuant to the Security Agreement, the Grantor is required to
execute and deliver to the Trustee, for the benefit of the Noteholders, this
Copyright Security Agreement.

     NOW, THEREFORE, in consideration of the premises and mutual covenants
herein contained and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the Grantor hereby agrees as
follows:

     1. DEFINED TERMS. All capitalized terms used but not otherwise defined
herein have the meanings given to them in the Security Agreement.

     2. GRANT OF SECURITY INTEREST IN COPYRIGHT COLLATERAL. The Grantor hereby
grants to the Trustee, for the benefit of the Noteholders, a continuing security
interest in all of the Grantor's right, title and interest in, to and under the
following, whether presently existing or hereafter created or acquired
(collectively, the "Copyright Collateral"):

          (a) all of such Grantor's Copyrights and Copyright Intellectual
Property Licenses to which it is a party including those referred to on Schedule
I hereto;
<PAGE>
          (b) all renewals or extensions of the foregoing; and

          (c) all products and proceeds of the foregoing, including, without
limitation, any claim by the Grantor against third parties for past, present or
future infringement of any Copyright or any Copyright licensed under any
Intellectual Property License.

     3. SECURITY AGREEMENT. The security interests granted pursuant to this
Copyright Security Agreement are granted in conjunction with the security
interests granted to the Trustee, for the benefit of the Noteholders, pursuant
to the Security Agreement. The Grantor hereby acknowledges and affirms that the
rights and remedies of the Trustee with respect to the security interest in the
Copyright Collateral made and granted hereby are more fully set forth in the
Security Agreement, the terms and provisions of which are incorporated by
reference herein as if fully set forth herein.

     4. AUTHORIZATION TO SUPPLEMENT. The Grantors shall give the Trustee prompt
notice in writing of any additional United States copyright registrations or
applications therefor after the date hereof. The Grantors hereby authorize the
Trustee unilaterally to modify this Copyright Security Agreement by amending
Schedule I to include any future United States registered copyrights or
applications therefor of such Grantor. Notwithstanding the foregoing, no failure
to so modify this Copyright Security Agreement or amend Schedule I shall in any
way affect, invalidate or detract from the Trustee's continuing security
interest in all Collateral, whether or not listed on Schedule I.

     5. COUNTERPARTS. This Copyright Security Agreement may be executed in any
number of counterparts, each of which shall be deemed to be an original, but all
such separate counterparts shall together constitute but one and the same
instrument. In proving this Copyright Security Agreement or any other Note
Document in any judicial proceedings, it shall not be necessary to produce or
account for more than one such counterpart signed by the party against whom such
enforcement is sought. Any signatures delivered by a party by facsimile
transmission or by e-mail transmission shall be deemed an original signature
hereto.

     6. Notwithstanding anything herein to the contrary, (i) the liens and
security interests granted to the Trustee pursuant to this Copyright Security
Agreement are expressly subject and subordinate to the liens and security
interests granted to the Administrative Agent (and its permitted successors and
assigns), for the benefit of the credit parties, pursuant to the Credit
Agreement and the related security documents dated as of September 9, 2004 (as
further amended, restated, refinanced, replaced, supplemented or otherwise
modified from time to time), by and among the Company, the Administrative Agent,
the lenders and the other credit parties party thereto and the other parties
party thereto and (ii) the exercise of any right or remedy by the Trustee
hereunder is subject to the limitations and provisions of the Intercreditor
Agreement. In the event of any conflict between the terms of the Intercreditor
Agreement and the terms of this Copyright Security Agreement, the terms of the
Intercreditor Agreement shall govern.

                            [SIGNATURE PAGE FOLLOWS]
<PAGE>
     IN WITNESS WHEREOF, each Grantor has caused this Copyright Security
Agreement to be executed and delivered by its duly authorized officer as of the
date first set forth above.

GRANTORS:                              SECURUS TECHNOLOGIES, INC., a Delaware
                                       corporation

                                       By: /s/ Lewis Schoenwettek
                                           -------------------------------------
                                           Name: Lewis Schoenwettek
                                           Title: Vice President

                                       T-NETIX, INC., a Delaware corporation

                                       By: /s/ Lewis Schoenwettek
                                           -------------------------------------
                                           Name: Lewis Schoenwettek
                                           Title: Vice President

                                       TELEQUIP LABS, INC., a Nevada Corporation

                                       By: /s/ Lewis Schoenwettek
                                           -------------------------------------
                                           Name: Lewis Schoenwettek
                                           Title: Vice President

                                       T-NETIX TELECOMMUNICATIONS
                                       SERVICES, INC., a Texas corporation

                                       By: /s/ Lewis Schoenwettek
                                           -------------------------------------
                                           Name: Lewis Schoenwettek
                                           Title: Vice President

                                       SPEAKEZ, INC., a Colorado corporation

                                       By: /s/ Lewis Schoenwettek
                                           -------------------------------------
                                           Name: Lewis Schoenwettek
                                           Title: Vice President
<PAGE>
                                       T-NETIX MONITORING CORPORATION, a
                                       Colorado corporation

                                       By: /s/ Lewis Schoenwettek
                                           -------------------------------------
                                           Name: Lewis Schoenwettek
                                           Title: Vice President

                                       EVERCOM HOLDINGS, INC., a Delaware
                                       corporation

                                       By: /s/ Lewis Schoenwettek
                                           -------------------------------------
                                           Name: Lewis Schoenwettek
                                           Title: Vice President

                                       EVERCOM, INC., a Delaware corporation

                                       By: /s/ Lewis Schoenwettek
                                           -------------------------------------
                                           Name: Lewis Schoenwettek
                                           Title: Vice President

                                       EVERCOM SYSTEMS, INC., a Delaware
                                       corporation

                                       By: /s/ Lewis Schoenwettek
                                           -------------------------------------
                                           Name: Lewis Schoenwettek
                                           Title: Vice President

                                       FORTUNELINX, INC., a Delaware
                                       corporation

                                       By: /s/ Lewis Schoenwettek
                                           -------------------------------------
                                           Name: Lewis Schoenwettek
                                           Title: Vice President

                                       EVERCONNECT, INC., a Delaware
                                       corporation

                                       By: /s/ Lewis Schoenwettek
                                           -------------------------------------
                                           Name: Lewis Schoenwettek
                                           Title: Vice President
<PAGE>
                                       ACCEPTED AND ACKNOWLEDGED
                                       BY:

                                       THE BANK OF NEW YORK TRUST
                                       COMPANY, N.A., as Trustee

                                       By: /s/ George W. Bemister
                                           -------------------------------------
                                       Name: George W. Bemister
                                       Title: ASSISTANT VICE PRESIDENT
<PAGE>
                                   SCHEDULE I

                                       TO

                          COPYRIGHT SECURITY AGREEMENT

                             COPYRIGHT REGISTRATIONS

T-NETIX, INC. AND SUBSIDIARIES:

None.

EVERCOM HOLDINGS, INC. AND SUBSIDIARIES:

<TABLE>
<CAPTION>
                                                          REGISTRATION    REGISTRATION
       GRANTOR          COUNTRY         COPYRIGHT               NO.           DATE
       -------          -------         ---------         ------------    ------------
<S>                     <C>       <C>                     <C>             <C>
Evercom Systems, Inc.     USA     EVERCOM INVISION        TXu 1-065-233   11/23/2001
Evercom Systems, Inc.     USA     EVERCOM CAM             TXu 1-112-890   11/26/2001
Evercom Systems, Inc.     USA     EVERCOM LEMS            TXu 1-065-234   11/23/2001
Fortune LinX, Inc.        USA     FORTUNELINX             TXu 1-034-898   11/26/2001
Evercom Systems, Inc.     USA     EVERCOM PORTAL          TXu 1-025-385   11/23/2001
Evercom Systems, Inc.     USA     EVERCOM SYSTEMS         TXu 1-043-262   11/23/2001
Evercom Systems, Inc.     USA     EVERCOM VALIDATION      TXu-1 -036-262  11/23/2001
Evercom Systems, Inc.     USA     EVERCOM BILLING         TXu-1-025-371   11/21/2001
Evercom Systems, Inc.     USA     EVERCOM CUSTOMER CARE   TXu-1-039-431   11/23/2001
</TABLE>

                               COPYRIGHT LICENSES

T-NETIX, INC. AND SUBSIDIARIES:

None.

EVERCOM HOLDINGS, INC. AND SUBSIDIARIES:

None.<PAGE>
                                                                     Exhibit 4.7

                          TRADEMARK SECURITY AGREEMENT

     This TRADEMARK SECURITY AGREEMENT (this "Trademark Security Agreement") is
made this 9th day of September, 2004, among the Grantors listed on the signature
pages hereof (the "Grantors"), and Bank of New York Trust Company, N.A., as
trustee under the Indenture (as defined below) (the "Trustee").

                                   WITNESSETH:

     WHEREAS, pursuant to (a) that certain Indenture dated as of September 9,
2004 (as amended, restated, supplemented or otherwise modified from time to
time, the "Indenture") among Securus Technologies, Inc., a Delaware corporation,
as issuer (the "Company"), the subsidiaries of the Company party thereto as
guarantors (the "Guarantors") and the Trustee, and (b) the Purchase Agreement
dated as of August 18, 2004 (the "Purchase Agreement"), among the Company, the
Guarantors, Credit Suisse First Boston LLC and Morgan Stanley & Co. Incorporated
(the "Initial Purchasers"), the Company is issuing $154,000,000 aggregate
principal amount of its Second-Priority Senior Secured Notes Due 2011 (the
"Notes") which will be guaranteed on a senior secured basis by the Guarantors;

     WHEREAS, in order to induce the Initial Purchasers to enter into the
Purchase Agreement and to induce the Initial Purchasers to purchase the Notes,
the Grantors have agreed to grant a continuing Lien on the Collateral in order
to secure the prompt and complete payment, observance and performance of the
Secured Obligations, by the granting of the security interest contemplated by
the Security Agreement (as defined below);

     WHEREAS, the Trustee is willing to enter into the Indenture, but only upon
the condition, among others, that the Grantor shall have executed and delivered
to the Trustee, for the benefit of the Noteholders, that certain Security
Agreement dated as of September 9, 2004 (including all annexes, exhibits or
schedules thereto, as from time to time amended, restated, supplemented or
otherwise modified, the "Security Agreement"); and

     WHEREAS, pursuant to the Security Agreement, the Grantor is required to
execute and deliver to the Trustee, for the benefit of the Noteholders, this
Trademark Security Agreement.

     NOW, THEREFORE, in consideration of the premises and mutual covenants
herein contained and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the Grantor hereby agrees as
follows:

     1. DEFINED TERMS. All capitalized terms used but not otherwise defined
herein have the meanings given to them in the Security Agreement.

     2. GRANT OF SECURITY INTEREST IN TRADEMARK COLLATERAL. The Grantor hereby
grants to the Trustee, for the benefit of the Noteholders, a continuing security
interest in all of the Grantor's right, title and interest in, to and under the
following, whether presently existing or hereafter created or acquired
(collectively, the "Trademark Collateral"):

          (a) all of its Trademarks and Trademark Intellectual Property Licenses
to which it is a party including those referred to on Schedule I hereto;
<PAGE>
          (b) all renewals of the foregoing;

          (c) all goodwill of the business connected with the use of, and
symbolized by, each Trademark and each Trademark Intellectual Property License;
and

          (d) all products and proceeds of the foregoing, including, without
limitation, any claim by the Grantor against third parties for past, present or
future (i) infringement or dilution of any Trademark or any Trademark licensed
under any Intellectual Property License or (ii) injury to the goodwill
associated with any Trademark or any Trademark licensed under any Intellectual
Property License.

     3. SECURITY AGREEMENT. The security interests granted pursuant to this
Trademark Security Agreement are granted in conjunction with the security
interests granted to the Trustee, for the benefit of the Noteholders, pursuant
to the Security Agreement. The Grantor hereby acknowledges and affirms that the
rights and remedies of the Trustee with respect to the security interest in the
Trademark Collateral made and granted hereby are more fully set forth in the
Security Agreement, the terms and provisions of which are incorporated by
reference herein as if fully set forth herein.

     4. AUTHORIZATION TO SUPPLEMENT. If any Grantor shall obtain rights to any
new trademarks, the provisions of this Trademark Security Agreement shall
automatically apply thereto. The Grantors shall give prompt notice in writing to
the Trustee with respect to any such new trademarks or renewal or extension of
any trademark registration. Without limiting the Grantors' obligations under
this Section 4, the Grantors hereby authorize the Trustee unilaterally to modify
this Trademark Security Agreement by amending Schedule I to include any such new
trademark rights of such Grantor. Notwithstanding the foregoing, no failure to
so modify this Trademark Security Agreement or amend Schedule I shall in any way
affect, invalidate or detract from the Trustee's continuing security interest in
all Collateral, whether or not listed on Schedule I.

     5. COUNTERPARTS. This Trademark Security Agreement may be executed in any
number of counterparts, each of which shall be deemed to be an original, but all
such separate counterparts shall together constitute but one and the same
instrument. In proving this Trademark Security Agreement or any other Note
Document in any judicial proceedings, it shall not be necessary to produce or
account for more than one such counterpart signed by the party against whom such
enforcement is sought. Any signatures delivered by a party by facsimile
transmission or by e-mail transmission shall be deemed an original signature
hereto.

     6. Notwithstanding anything herein to the contrary, (i) the liens and
security interests granted to the Trustee pursuant to this Trademark Security
Agreement are expressly subject and subordinate to the liens and security
interests granted to the Administrative Agent (and its permitted successors and
assigns), for the benefit of the credit parties, pursuant to the Credit
Agreement and the related security documents dated as of September 9, 2004 (as
further amended, restated, refinanced, replaced, supplemented or otherwise
modified from time to time), by and among the Company, the Administrative Agent,
the lenders and the other credit parties party thereto and the other parties
party thereto and (ii) the exercise of any right or remedy by the Trustee
hereunder is subject to the limitations and provisions of the Intercreditor
Agreement. In
<PAGE>
the event of any conflict between the terms of the Intercreditor Agreement and
the terms of this Trademark Security Agreement, the terms of the Intercreditor
Agreement shall govern.

                            [SIGNATURE PAGE FOLLOWS]
<PAGE>
     IN WITNESS WHEREOF, each Grantor has caused this Trademark Security
Agreement to be executed and delivered by its duly authorized officer as of the
date first set forth above.

GRANTORS:                               SECURUS TECHNOLOGIES, INC.,
                                        a Delaware corporation

                                        By: /s/ Lewis Schoenwettek
                                            ------------------------------------
                                            Name: Lewis Schoenwettek
                                            Title: Vice President

                                        T-NETIX, INC.,
                                        a Delaware corporation

                                        By: /s/ Lewis Schoenwettek
                                            ------------------------------------
                                            Name: Lewis Schoenwettek
                                            Title: Vice President

                                        TELEQUIP LABS, INC.,
                                        a Nevada corporation

                                        By: /s/ Lewis Schoenwettek
                                            ------------------------------------
                                            Name: Lewis Schoenwettek
                                            Title: Vice President

                                        T-NETIX TELECOMMUNICATIONS
                                        SERVICES, INC., a Texas corporation

                                        By: /s/ Lewis Schoenwettek
                                            ------------------------------------
                                            Name: Lewis Schoenwettek
                                            Title: Vice President

                                        SPEAKEZ, INC., a Colorado corporation

                                        By: /s/ Lewis Schoenwettek
                                            ------------------------------------
                                            Name: Lewis Schoenwettek
                                            Title: Vice President
<PAGE>
                                        T-NETIX MONITORING CORPORATION, a
                                        Colorado corporation

                                        By: /s/ Lewis Schoenwettek
                                            ------------------------------------
                                            Name: Lewis Schoenwettek
                                            Title: Vice President

                                        EVERCOM HOLDINGS, INC.,
                                        a Delaware corporation

                                        By: /s/ Lewis Schoenwettek
                                            ------------------------------------
                                            Name: Lewis Schoenwettek
                                            Title: Vice President

                                        EVERCOM, INC., a Delaware corporation

                                        By: /s/ Lewis Schoenwettek
                                            ------------------------------------
                                            Name: Lewis Schoenwettek
                                            Title: Vice President

                                        EVERCOM SYSTEMS, INC.,
                                        a Delaware corporation

                                        By: /s/ Lewis Schoenwettek
                                            ------------------------------------
                                            Name: Lewis Schoenwettek
                                            Title: Vice President

                                        FORTUNELINX, INC.,
                                        a Delaware corporation

                                        By: /s/ Lewis Schoenwettek
                                            ------------------------------------
                                            Name: Lewis Schoenwettek
                                            Title: Vice President

                                        EVERCONNECT, INC.,
                                        a Delaware corporation

                                        By: /s/ Lewis Schoenwettek
                                            ------------------------------------
                                            Name: Lewis Schoenwettek
                                            Title: Vice President
<PAGE>
                                        ACCEPTED AND ACKNOWLEDGED
                                        BY:

                                        THE BANK OF NEW YORK TRUST COMPANY,
                                        N.A., as Trustee

                                        By: /s/ George W. Bemister
                                            ------------------------------------
                                            Name: George W. Bemister
                                            Title: ASSISTANT VICE PRESIDENT
<PAGE>
                                   SCHEDULE I
                                       to
                          TRADEMARK SECURITY AGREEMENT

                      TRADEMARK REGISTRATIONS/APPLICATIONS

T-NETIX, INC. AND SUBSIDIARIES, INC.:

<TABLE>
<CAPTION>
                                                                     APPLICATION/
     GRANTOR         COUNTRY   TYPE               MARK             REGISTRATION NO.   APP/REG DATE
------------------   -------   -----   -------------------------   ----------------   -----------------
<S>                  <C>       <C>     <C>                         <C>                <C>
T-NETIX                USA     SM      COGENT (Class 36)               1,537,607      5/2/89
T-NETIX                USA     SM      PIN-LOCK                        2,194,830      10/13/98
T-NETIX JMS            USA     SM      Lock&Track Online                              Pending
T-NETIX                USA     TM      COGENT & Design (Class 9)       1,783,893      7/27/93
T-NETIX                USA     TM      COGENT (Class 9)                1,810,510      12/14/93
T-NETIX Monitoring     USA     TM      CONTAIN                         2,176,736      7/28/98
T-NETIX                USA     TM      TEL-BASE                        2,268,058      8/10/99
T-NETIX                USA     TM      Digital ComBridge               ?              Pending
T-NETIX                USA     TM      STRIKE-THREE!                  74/490,873      2/17/94 (Pending)
T-NETIX                USA     TM      SECUREVOICE                     78/293406      Pending
T-NETIX                USA     TM      VoicEntry                                      Pending
T-NETIX JMS            USA     TM      Lock&Track                                     Pending
T-NETIX                USA     TM/SM   T-NETIX                         2,251,603      6/8/99
</TABLE>
<PAGE>
EVERCOM HOLDINGS, INC. AND SUBSIDIARIES:

<TABLE>
<CAPTION>
                                                                 APPLICATION/
       GRANTOR          COUNTRY             MARK               REGISTRATION NO.         APP/REG DATE
---------------------   -------   --------------------------   ----------------   -------------------------
<S>                     <C>       <C>                          <C>                <C>
Evercom Systems, Inc.     USA     EVERCOM SYSTEMS                  75/982,163             7/27/1998
                                  K001D1-10211918                   2,698,196             3/18/2003

Evercom Systems, Inc.     USA     SMARTCONNECT                     76/163,962            11/13/2000
                                  K002US-10207748                   2,664,188            12/17/2002

Evercom Systems, Inc.     USA     EVERCOM                          75/503,453             6/16/1998
                                  K007US-10210197                   2,789,027             12/2/2003

Evercom Systems, Inc.     USA     EVERCOM SYSTEMS                  75/526,392             7/27/1998
                                  K011US-10211924                   2,520,541            12/18/2001

Evercom Systems, Inc.     USA     EVERCOM SYSTEMS                  75/526,393             7/27/1998
                                  K012US-10211925                   2,585,670            06/25/2002

Evercom Systems, Inc.     USA     EVERCOM SYSTEMS                  75/530,595             8/04/1998
                                  K013US-10211926                   2,585,672             6/25/2002

Evercom Systems, Inc.     USA     MISCELLANEOUS DESIGN             76/491,487             2/20/2003
                                  K014US-10300176

Evercom Systems, Inc.     USA     ELECTRONICDRAGNET                78/354,063             1/20/2004
                                  K024US-10311996

Evercom Systems, Inc.     USA     EVERCOM - ITU                    76/594,043             5/26/2004
                                  K044US-10312006

Evercom Systems, Inc.     USA     EVERCOM - USE                    76/594,042             5/26/2004
                                  K045US-10312007

Evercom Systems, Inc.     USA     MISCELLANEOUS DESIGN - ITU                      U.S. application will be
                                  K042US-10312002                                 filed in the near future

Evercom Systems, Inc.     USA     MISCELLANEOUS DESIGN - USE                      U.S. application will be
                                  K043US-10312004                                 filed in the near future

Evercom Systems, Inc.     USA     EVERREACH                                       Proposed mark under
                                  K017US-10311994                                 consideration for U.S.
                                                                                  intent-to-use application
Evercom Systems, Inc.     USA     EVERCONNECT                                     Mark under consideration
                                  K047XX1                                         for U.S. use-based or
                                                                                  intent-to-use application
</TABLE>

                                        6
<PAGE>
<TABLE>
<CAPTION>
                                                                 APPLICATION/
       GRANTOR          COUNTRY             MARK               REGISTRATION NO.         APP/REG DATE
---------------------   -------   --------------------------   ----------------   -------------------------
<S>                     <C>       <C>                          <C>                <C>
Evercom Systems, Inc.     USA     IBNA                                            Proposed mark under
                                  K018US-10311995                                 consideration for U.S.
                                                                                  intent-to-use application

Evercom Systems, Inc.     USA     ICBS                                            Mark under consideration
                                  K048XX1                                         for U.S. use-based
                                                                                  application

Evercom Systems, Inc.     USA     IT-JAIL                                         Proposed mark under
                                  K028US-10311997                                 consideration for U.S.
                                                                                  intent-to-use application
</TABLE>

                               PROPOSED TRADEMARKS

Marks Proposed And Screening Search Conducted - Will be Used with "TM"

<TABLE>
<S>              <C>                <C>             <C>
SECURE RELEASE   FACILITY MANAGER   3-WAY CONNECT   IT-A
   K022XX1          K032XX1            K035XX1         K040XX1
COVERT           INTELLIGENT        INTELLIGENT
INVESTIGATOR     TRANSACT           TECHNOLOGIES
   K028XX1          K033XX1         ARCHITECTURE
                                       K039XX1
SECURE BOOKING   COM-PLUS
   K030XX1          K034XX1
</TABLE>

Marks Proposed and Screening Search Conducted
- Will Be Used Without "TM" or Other Claim Of Trademark Rights

<TABLE>
<S>              <C>
CALL MANAGER     CONNECTION PLUS
   K036XX1          K037XX1
</TABLE>

                                        7
<PAGE>
                                   TRADE NAMES

Evercom Systems, Inc. uses the following DBAs:

     -    Correction Billing Services

     -    CBS

                               TRADEMARK LICENSES

T-NETIX, INC. AND SUBSIDIARIES:

None.

EVERCOM HOLDINGS, INC. AND SUBSIDIARIES:

None.

                                        8

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