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 10.22X

TWENTY-FIRST AMENDMENT

TO THE

CSG MASTER SUBSCRIBER MANAGEMENT SYSTEM AGREEMENT

BETWEEN

csg SYSTEMS, INC.

AND

COMCAST CABLE COMMUNICATIONS MANAGEMENT, LLC

This TWENTY-FIRST 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 CSG Master Subscriber Management System Agreement (CSG document #2501940) with an effective date of March 1, 2013 (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:

WHEREAS, Customer desires to utilize, and CSG agrees to provide, CSG’s Check Verification services on an enterprise-wide basis pursuant to the terms of the Agreement.

NOW, THEREFORE, CSG and Customer agree to delete the pricing provided in Schedule F, Section IV. Ancillary Products and Services, Subsection D. titled “Check Verification,” and replace it as provided in this amendment which will provide for enterprise-wide and non-enterprise-wide pricing to Customer as follows:

D.Check Verification

Note 1: Service Option 1 consists of **** *******, ******* ****** and ******** ******** ************.

Note 2: Service Option 2 consists of ******* ****** * and ******** ******** ************.

Note 3: Service Option 3 consists of ******* ****** * and ******* ****** * and ********** ******** *** ****** ****, ************ ************ and is **** ******** **** * *********** is *** ********** in ******* ****** * and ******* ****** *.

Note 4: For purposes of this Amendment, Enterprise-wide Check Verification Services shall mean Customer’s deployment of the Check Verification Service for use on all Connected Subscribers.

Note 5:  For purposes of this Amendment, Non-enterprise-wide Check Verification Services shall mean Customer does not deploy the Check Verification Service for use on all Connected Subscribers.  

The fees set forth in the fee table above are subject to increase pursuant to Section 5.4, Adjustment to Fees, of the Agreement.

Note 1: Design, development and implementation services and lead times will be set forth in a mutually agreeable Statement of Work for each CRE.

Note 2: In such Statement of Work mentioned in Note 1, the specific level of Production Support and Maintenance per CRE solution (i.e., High, Medium or Low) shall be designated to establish ****** billing.

Note 3: As a point of clarification, the fees for CSG Offensive Language Filter Solution, Clear and Disable Tech Number-Rescheduled Jobs in Order Work Flow, and Disabled Equipment Warning (per the Seventeenth Amendment, CSG document number 4106622, executed July 21, 2015); the fees for XH Multi-Tech Orders Customer Rules Engine (per the Nineteenth Amendment, CSG document number 4109676, executed February 23, 2016); the fees for Account Transfers Custom Rules Engine Edits (per the Twentieth Amendment, CSG document number 4109237, executed March 15, 2015); and the fees for T44 Discount Validation Custom Rules Engine and Deferred Credit Restriction Custom Rules Engine (per the Twenty-second Amendment, CSG document number 4107927, executed May 11, 2016) shall be excluded from the fee table listed above; instead, such fees will continue to be invoiced in accordance with the respective fee tables listed in the respective Amendment for such CRE solution.

The fees set forth in the fee table above are subject to increase pursuant to Section 5.4, Adjustment to Fees, of the Agreement.

WHEREAS, CSG and Customer entered into that certain Seventeenth Amendment to the Agreement effective as of July 21, 2015 (CSG document number 4106622) (the “17^th Amendment”), whereby, pursuant to Section 2 of the 17^th Amendment, CSG and Customer agreed to add additional named users for CSG Vantage® Reporting Dashboards; and

WHEREAS, CSG and Customer desire to consolidate the CSG Vantage® Enhanced Campaigns Dashboard added pursuant to the 14^th amendment into the CSG Vantage® Reporting Dashboard services provided pursuant to Section 2 of the 17^th Amendment and said services shall now be called CSG Vantage® Business Intelligence (“BI”).

NOW, THEREFORE, CSG and Customer agree to delete the terms of the Agreement provided by the 14^th Amendment in their entirety and to modify the terms of the Agreement provided in Section 2 of the 17^th Amendment by deleting the terms of Section 2 of the 17^th Amendment and replacing them with the following:

(a)   Customer desires to utilize the services of CSG Vantage® Business Intelligence (“BI”) to add and support additional named users for BI applications featuring interactive reports and dashboards developed by CSG.  

(b)   As of the 17th Amendment Effective Date, Schedule F, Section IV. Ancillary Products and Services, Subsection A. titled “Ancillary Services for Non-Rated Video and Non-Rated High-Speed Data and Residential Voice Services,” is hereby amended to add a new Subsection 10 titled “CSG Vantage® BI End User Licensing,” a new Subsection 11 titled “CSG Vantage® BI Application Support & Maintenance,” and a new Subsection 12 titled “CSG Vantage® Storage” as follows

Note 1: Design, development and implementation services will be set forth in a mutually agreeable Statement of Work (CSG#2503499).

Note 2: The monthly End User License fees for the initial **** (*) ***** ***** **** for the CSG Vantage Dynamic Triggering Reporting Dashboard as well as the Support and Maintenance fees are included in the CSG Dynamic Triggering Solution Production Support and Maintenance Fee as defined in the Agreement.

Note 4: The Dashboard Complexity Tiers are defined per unique dashboard implementation. The use of Customer or third party data sources will need to be mutually agreed upon on how they are loaded into a dashboard and considered complex.  Dashboards can move through the tiers as additional requests are developed.

Note 5: Storage Fees apply in the event new data feeds are required, or Customer elects to expand existing Vantage retention settings.

Note 6:  Enhanced Campaigns Dashboard previously provided by CSG to Customer’s ********* and **** ********* included **** (*) Vantage BI users for the ********* ******** and **** (*) Vantage BI users for the **** ******** in the $****** ******* fee.

The fees set forth in the fee table above are subject to increase pursuant to Section 5.4, Adjustment to Fees, of the Agreement.

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