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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AWWA B201-08
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AWWA B404-08
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AWWA B304-08
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AWWA C222-08
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