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TIA-1126.509 2008 Edition, July 1, 2008 S.R0125-509-0 v1.0 VoIP Supplementary Services Descriptions: Calling Identification Restriction
TIA-1126.553 2008 Edition, July 1, 2008 S.R0125-553-0 v1.0 VoIP Supplementary Services Descriptions: Customized Ring Back Tone
TIA-1126.559 2008 Edition, July 1, 2008 S.R0125-559-0 v1.0 VoIP Supplementary Services Descriptions: Terminating Identification Restriction
TIA-1126.558 2008 Edition, July 1, 2008 S.R0125-558-0 v1.0 VoIP Supplementary Services Descriptions: Terminating Identification Presentation
TIA-1126.507 2008 Edition, July 1, 2008 S.R0125-507-0 v1.0 VoIP Supplementary Services Descriptions: Call Waiting
TIA-1126.562 2008 Edition, July 1, 2008 S.R0125-562-0 v1.0 VoIP Supplementary Services Descriptions: Voice Message Retrieval
TIA-1126.506 2008 Edition, July 1, 2008 S.R0125-506-0 v1.0 VoIP Supplementary Services Descriptions: Call Transfer
TIA-1126.505 2008 Edition, July 1, 2008 S.R0125-505-0 v1.0 VoIP Supplementary Services Descriptions: Call Forwarding-Unconditional
TIA-1126.522 2008 Edition, July 1, 2008 S.R0125-522-0 v1.0 VoIP Supplementary Services Descriptions: Three Way Calling
TIA-1126.554 2008 Edition, July 1, 2008 S.R0125-554-0 v1.0 VoIP Supplementary Services Descriptions: Directory Assistance
TIA-1126.502 2008 Edition, July 1, 2008 S.R0125-502-0 v1.0 VoIP Supplementary Services Descriptions: Call Forwarding-Busy
TIA-1126.512 2008 Edition, July 1, 2008 S.R0125-512-0 v1.0 VoIP Supplementary Services Descriptions: Flexible Alerting