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Telia/Nortel Pre-SPIRITS implementation

Telia/Nortel Pre-SPIRITS implementation. Sören Nyckelgård Telia Research AB soren.m.nyckelgard@telia.se. Using SIP to bridge between old and new. The “SPIRITS server”. ... is a Protocol Converter and a SIP Server. Users’ SIP-enabled services. PSTN. ISDN. ISUP. INAP. IP cloud. SIP.

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Telia/Nortel Pre-SPIRITS implementation

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  1. Telia/Nortel Pre-SPIRITS implementation Sören Nyckelgård Telia Research AB soren.m.nyckelgard@telia.se Using SIP to bridge between old and new

  2. The “SPIRITS server” ... is a Protocol Converter and a SIP Server. Users’ SIP-enabled services PSTN ISDN ISUP INAP IP cloud SIP GSM MAP SIP QSIG PBX cluster “Signaling Control Gateway” SS7-IP Protocol Converter “Interconnector” E.164 databaseSIP redirect (Number Portability)SIP proxy (Service Router)

  3. Signaling Flow Example Signaling Control GatewaySS7-IP Protocol Converter Interconnector E.164 databaseRedirect : Number PortabilityProxy : Service Router Service based on a SIP redirect server PSTN SIP: INVITE SIP: INVITE INAP: IDP INAP: CON SIP: 301 Moved SIP: 301 Moved (A) or SIP: 404 Not Found INAP: CUE SIP: 404 Not Found (B)

  4. GSM ISDN PSTN Characteristics • No new protocols • No changes to existing networks except reconfigurations • No media via MG unless one of the endpoints is IP-homed • Number Portability • bunus feature or first application • globally and between networks • Services • globally distributive • need only to support SIP • SCN terminals appear as SIP clients • multi-network services service service IPcloud service

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