Pages where confidential treatment has been requested are stamped “Confidential
Treatment Requested and

the Redacted Material has been separately filed with the Commission,” and places
where information has

been redacted have been marked with (***).

EXHIBIT 10.24F

FIFTY-THIRD AMENDMENT

OF THE

CSG MASTER SUBSCRIBER MANAGEMENT SYSTEM AGREEMENT

BETWEEN

CSG SYSTEMS, INC.

AND

TIME WARNER CABLE INC.

This Fifty-third Amendment (the “Amendment”) is made by and between CSG Systems,
Inc., a Delaware corporation (“CSG”), and Time Warner Cable Inc. (“TWC”). CSG
and TWC entered into a certain CSG Master Subscriber Management System Agreement
executed March 13, 2003, and effective as of April 1, 2003, as amended (the
“Agreement”), and now desire to further amend the Agreement in accordance with
the terms and conditions set forth in this Amendment. If the terms and
conditions set forth in this Amendment shall be in conflict with the Agreement,
the terms and conditions of this Amendment shall control. Any terms in initial
capital letters or all capital letters used as a defined term but not defined in
this Amendment, shall have the meaning set forth in the Agreement. Upon
execution of this Amendment by the parties, any subsequent reference to the
Agreement between the parties shall mean the Agreement as amended by this
Amendment. Except as amended by this Amendment, the terms and conditions set
forth in the Agreement shall continue in full force and effect according to
their terms.

CSG and TWC agree to the following as of the Effective Date (as defined below):

 

1. Customers desire to use and CSG agrees to provide CSG’s Electronic Trackable
Appointments service (“Electronic Trackable Appointments Service”) which will
allow Customers to provide self-service and notification abilities relating to
appointments to each Customer’s subscribers through a database hosted by CSG.

a) As a result Schedule C, Basic Services and Additional Services and Associated
Exhibits, of the Agreement is modified by adding the following to the section
entitled “Additional Services”:

Database Services Re Customer’s Electronic Trackable Appointments Service

b) As a result, Schedule C, Basic Services and Additional Services and
Associated Exhibits, of the Agreement is modified by adding the following to the
section entitled “Services Description”:

Database Services re Customer’s Electronic Trackable Appointments Service. As
part of the Electronic Trackable Appointments Service, CSG shall develop and
provide a database. The database will be hosted by CSG on *** *** ********* CSG
servers for each Customer’s subscribers and will store each Customer’s
subscriber appointment-specific contact information (the “Information”). The
Information shall be available to each Customer for its external applications
for a period of ****** **** **** via web services. CSG shall perform the design,
development, programming and reporting services related to the Electronic
Trackable Appointment Service pursuant to the Statement of Work to be executed
by CSG and Customer (CSG document no. 2306468) (the “SOW”). TWC and CSG agree
that all Work Product and Deliverables related to the Electronic Trackable
Appointment Service shall be the sole and exclusive property of CSG, excluding
the Information, regardless as to whether such Information is marked and/or
stated as confidential or proprietary, which shall be deemed to be Confidential
Information of Customers.

--------------------------------------------------------------------------------

*** Confidential Treatment Requested and the Redacted Material has been
separately filed with the Commission.

 

c) As a result, Schedule F of the Agreement shall be amended to include the
following fees for the Electronic Trackable Appointments Service. TWC shall pay,
and CSG shall invoice to TWC, the following fees for the Additional Services
under this Amendment following commencement of the Electronic Trackable
Appointments Service pursuant to the SOW. For avoidance of doubt, the *******
*** ***-**** fees for the Electronic Trackable Appointments Service set forth
below, ******** ***** ** *** ********* **** ******, **** **** ** ****, ** ***
*** ******* *** Electronic Trackable Appointments Service (subject to the
support limitation noted below):

Database Services Re Customer’s Electronic Trackable Appointments Application
(Note 3)

 

*********** ** ****/**** ** *******

   *********    ***  

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*. ******** ****** *** **** *** ********* *******; **,***.** ****, *** ******

   *******      **,***.**   

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***.

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******* **** ***** *******; *** ******* ** ****** ** ******* **** ***** **** **
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********* ******** ***. *** ************* ********, ****** *** ******* ******
**** *** ****** ********* *** ******* ********’* **-**** **** **** “****
******”*, *** *** *** **** ****** **** *** ********** ********* ************
******* ** *********** ** ********** **** *** ************ *** ***** ** *** ***
*** ** ********* ** ******* ************** ** ********* ******** ** *** ** ***
*********, *** ******** ****** ********** ********* ************ ******** ******
********, ******* *.*, ***** ***** *, **** *“**************”*. ****** *** ****
******, *** **** ****** ** *** *** ******* ** *** ********** *********
************ ******* ** ******** ** ********** **** *** ************** *****, *
“*******”*. *************** ******** ** *** ********* ** *** ********, *** *
****** ** ****** **** **** ********* *** **** ******, *** *** *** ***** **
********* *** ********** ********* *********** ******* ******* ******* ** ***
********** **** *** *** ****** ** ******* *** **** *******. ** *** **********
*** ********** ********* *********** ******* ****** **** ****** **** *** ******
***** ** *** *********, *** ***** ******** ****** ** *** *** ******* **** ** ***
********* *** ***** *** *** *** ***’* *********** **** ******* ** *** **********
****** *** ******* ****** ***** ** **** *** ** ** ***** ** ******. ** *** *****
**** *** **** *** ******** *** ********* ***** ** *********** ***** **
********** ** **** ****** **** *** ******, **** *** ***** *** *** *********
******* **** **** ******* ** * ****** ******* *** ****, ** ********** **** ***
***** *** ********** ** *** *********.

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*********** *** * ****** ** *** **** **** ****** **** ****

**** *: ********* ******* **** **** ** ******* ** ****** *** ***********

**** *: *** ****** ** ** ******** *** * ******* ** ****** **** ****** *** ***
********** ********* ************ ******* ********* ************ ** **** *******
*“********** ******”*; ********, *******, **** ** ** ***** ***** *** **
*********** *** ********** ********* ************ ******* **** ********* ***
*********** ** *** ********** ********* ************ ******* ** *** ****** ***
********** ****** *** ******* ******** ** ******* *.**** ** *.**** ** ***
*********.

 

2. Participating Affiliates may use and receive the Electronic Trackable
Appointments Service without any requirement that such Additional Service be set
forth in any such Participating Affiliate’s Affiliate Addendum. Subject to the
provisions set forth in **** * ** ******* * *****, ** ******** ** ***’*
*********** ****** *** ***** ** ******* * ** *** *********, *** ***** **** ****
*** ***** ** ********* *** ********’* *** ** ******* ** *** Electronic Trackable
Appointments Service, if applicable, for convenience, upon written notice to CSG
in accordance with 6.1(f) of the Agreement (as if “TWC” were substituted for
“Participating Affiliate” therein and without reference to any Affiliate
Addendum).

 

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*** Confidential Treatment Requested and the Redacted Material has been
separately filed with the Commission.

 

THIS AMENDMENT is executed and effective as of the day and year last signed
below (“Effective Date”).

 

TIME WARNER CABLE INC. (“TWC”)   CSG SYSTEMS, INC. (“CSG”) By: /s/ Frank
Boncimino   By: /s/ Michael J. Henderson Name: Frank Boncimino   Name: Michael
J. Henderson Title: SVP, Chief Information Officer   Title: EVP Sales &
Marketing Date: May 2, 2011   Date: 5/9/11

 

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