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SIP-T: Context and Architectures. Aparna Vemuri Jon Peterson Level ( 3 ) Communications. Introduction. Context and architectures for SIP-T (draft-vemuri-sip-t-context-00.txt) Roles and responsibilities of network entities Issues for consideration. Purpose. Feature transparency
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SIP-T: Context and Architectures Aparna Vemuri Jon Peterson Level (3) Communications
Introduction • Context and architectures for SIP-T (draft-vemuri-sip-t-context-00.txt) • Roles and responsibilities of network entities • Issues for consideration
Purpose Feature transparency • Encapsulation • Translation
PSTN-IP Interconnections PSTN origination - PSTN termination (SIP bridging) • ingress MGC • perform encapsulation • perform translation • egress MGC • interpret body • generate ISUP
PSTN-IP Interconnections PSTN origination - IP termination • MGC • perform encapsulation • perform translation • IP end-point • ignore ISUP
PSTN-IP Interconnections IP origination - PSTN termination • IP end-point • originate SIP • MGC • generate ISUP
Issues • SIP MIME type negotiation • “ISUP repetition” problem