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MGCF R-URI. Christer Holmberg Ericsson. Present solutions. ITU-T Q.1912.5 and 3GPP 29.163 (Rel-6 and Rel-7) only specify that an MGCF (PSTN GW/MGC) analyses information received in the R-URI when setting up a call towards the PSTN. RFC 3398 (ISUP/SIP interworking) also talks about R-URI
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MGCF R-URI Christer Holmberg Ericsson
Present solutions • ITU-T Q.1912.5 and 3GPP 29.163 (Rel-6 and Rel-7) only specify that an MGCF (PSTN GW/MGC) analyses information received in the R-URI when setting up a call towards the PSTN. • RFC 3398 (ISUP/SIP interworking) also talks about R-URI • An existing node receiving an Emergency URN in the R-URI and a PSTN number in the Route header will most likely reject the call
Emergency architecture BGCF MGCF
Problems to change behavior • The E-CSCF/LRF must know the capabilities of BGCFs and MGCFs • And route to the correct BGCF • BGCF choose an upgraded MGCF • All BGCF and MGCF upgraded to support the loose routing concept
Comments we get • Why should we upgrade since it works • The networks that requires the support to prioritise the emergency call in MGCF and CS network • Do it via support of some othe emergency info • Priority header • RPH • Numbering analysis • +CC-TC-emergency prefix-other digits