EXHIBIT 10.21E

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 (***).

NINTH AMENDMENT

TO THE

RESTATED AND AMENDED

CSG MASTER SUBSCRIBER MANAGEMENT SYSTEM AGREEMENT

BETWEEN

CSG SYSTEMS, INC.

AND

COMCAST CABLE COMMUNICATIONS MANAGEMENT, LLC

This NINTH AMENDMENT (the “Amendment”) is made by and between CSG Systems, Inc.
(“CSG”) and Comcast Cable Communications Management, LLC (“Customer”). The
Effective Date of this Amendment is the date last signed below. CSG and Customer
entered into a certain Restated and Amended CSG Master Subscriber Management
System Agreement (CSG document #2296663) dated July 1, 2008 (the “Agreement”)
and now desire to 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 Customer agree to the following as of the Effective Date:

 

1. CSG and Customer entered into agreements for the provision of CSG’s Desktop
Solution Bundle as provided in the Agreement and for Customer’s internal use and
for the provision of OWF for use by its outsourcers to support Customer’s
business as identified in the Agreement. CSG and Customer are ** * *******
********* *** ********** ** *** ** ***’* ******* ******** ****** *** *** ***
********’* *********** (“******* *******”).

 

2. CSG and Customer are ** * ******* ** ** ********’* *********** ** ***
*********** **** *** ******** ******** ******** ********, *******, ****** ***
******* ** *** ****** ** ****,***.** (“******* *******”) *** ***** ******** ***
********’* *********** *** ******* *** *********** ** **** ** *** ***********.

 

3. CSG and Customer are ** * ******* ** ** *** ********* ** *** ******** ** **
******** ** ******** *********** ******** ****** ***, ***** *** *********** **
*** ** **** **** * *** ***** *********** ** ********* **** (“***********
*******”).

 

4. The parties wish to ****** *** ******* *******, ******* ******* ***
*********** ******* (“*******, ******* *** *********** **********”) and agree as
follows:

 

  a) *** ****** ** ***** *** ****,***.** ********** ** *** ******* ******* **
**** ** *** ********* **** ****, ***** ***** *** ******* ******** ** *** *****
*********** *********** *** ***.

 

  b) *** ******* ***** ** ******* **** ***** **** *** ****** ********* **** ***
*********** ******* as provided in Section 5 of this Amendment.

 

  c) *** ******* ***** ** ******* **** ***** **** *** ****** ********* **** ***
******* ******* as provided in Section 5 of this Amendment.

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

 

  d) For a fee of ********** CSG agrees to grant Customer an ********** license
for OWF, for Customer’s internal use which includes use by Customer’s
outsourcers for Customer’s business purposes only.

 

  e) The parties agree to amend Schedule F, Section B. entitled “CSG Desktop
Solution Bundle” to add the following:

 

  •  

********** License OWF for Customer’s internal business use, which includes use
by Customer’s outsourcers. This ********** license is limited to the geographic
areas and Connected Subscribers currently supported by CSG’s CCS Services as of
the Effective Date of this Amendment, which shall include organic growth, but
excludes acquired or converted subscribers subsequent to the Effective Date of
this Amendment. In the event Customer experiences growth beyond the parameters
identified herein, CSG shall invoice and Customer shall pay the per seat license
fee for OWF provided in the Agreement using a ratio of one (1) OWF seat per ***
********** ********* *********** in addition to any implementation fees. The
maintenance fees related to the OWF ********** license is ******** ** **** **
*** **.**** *** ********* **********/*** ***** ********* ***** **** ** ***
******** *** *** *** ******* ******** ******, ******* ** ****** **********.

 

  f) CSG shall invoice Customer the OWF enterprise license fee upon the
Effective Date of this Amendment and Customer shall pay the invoice in
accordance with the terms of the Agreement.

 

  g) The parties agree to amend Schedule F, Section B. CSG Desktop Solutions
Bundle, by deleting the following references:

 

  •  

******** ******** (**,***) **** *****

  •  

********** **** ** ******** ******* (**,***,***)

 

  h) The parties agree to amend Schedule F, Section B. subsection entitled
“Component Fees,” by deleting the following reference for Order Workflow:

 

Description of Item/Unit of Measure

   Frequency    Fee  

*) *********** (*** ****)

   ********    $ **.**   

 

5. The parties agree that *** *******, ******* *** *********** ********** *****
*** ********* ** ********* ** ***** ** ********** ** ****** ***** ********* ***
******* ********** ** ******* * ******* * ** **** *********. *********, **
******** *** *** ************* ******** ** **** *********, **** ***** ***** **
******* ******* *** ***** *****’* **** *** ******* *********, ******,
************, ********, *********, ************, ** ***, ***** ********,
********** *** *******, *****, *********, ************** *** ******** **** ***
******* *** *** *** *****, ****** ** ******, ******, ***********, *** *******
********** ** ********, *** ** ** ******, ***** ** *** *** ** ** ***** ** ***
********* ****** ******** ** ******* ** *** ***, ******* ** ***, ** *****
********* ***** ** *** ********* **** **** ***** *** ** *** ******* *******,
******* ******* ** *********** *******. *** ********* ******* ***** *** ***** **
*** ******* ** **** ********** ** ******** *, ****** ************ ********** **
*** *******, ******* *********** ********** *** *** *************** ***********
******** ** *** *********.

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

 

IN WITNESS WHEREOF the parties hereto have caused this Amendment to be executed
by their duly authorized representatives.

 

COMCAST CABLE COMMUNICATIONS MANAGEMENT, LLC (“CUSTOMER”)     CSG SYSTEMS, INC.
(“CSG”) By:  

/s/ Andrew Barr

    By:  

/s/ Damon O. Barry

Name:   Andrew Barr     Name:   Damon O. Barry Title:   SVP & CIO     Title:  
Vice President, Business Affairs & Assistant General Counsel Date:   9/30/11    
Date:   9/30/11