This User to Network Interface (UNI) standard supports SIP based interconnection for VoIP between a carrier (SCF) and the user (EUF). The SIP UNI interface specified in this document is applicable to individual SIP phones as well as to SUP PBXs.
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IP Device (SIP UA) to Network Interface Standard
The Alliance for Telecommunications Industry Solutions , 07/03/2008
Pages: 54
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