UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
SCHEDULE 14A
PROXY STATEMENT PURSUANT TO SECTION 14(a)
OF THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. )
 | Filed by the Registrant |  | Filed by a Party other than the Registrant |
| Check the appropriate box: | |
| Preliminary Proxy Statement |
| Confidential, for Use of the Commission Only (as permitted by Rule 14A-6(E)(2)) |
| Definitive Proxy Statement |
| Definitive Additional Materials |
| Soliciting Material under §240.14a-12 |
CSG Systems International, Inc.
(Name of Registrant as Specified in Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
| Payment of Filing Fee (Check all boxes that apply): | |
| No fee required. |
| Fee paid previously with preliminary materials. |
| Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11. |
