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Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide H.323
OL-4008-01
Appendix A Using H.323 Supplementary Services
Common Supplementary Services
About Calling Line Identification Restriction
Calling Line Identification Restriction (CLIR) hides your identity from callers with Caller ID.
Calling Line Identification Restriction in the United States
Press *67 on your telephone keypad to activate CLIR. This feature is disabled when you hang up.
Calling Line Identification Restriction in Sweden
Press *31# on your telephone keypad to activate CLIR. This feature is disabled when you hang up.