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Cisco Bug: CSCtb62715 - SS7 redirection ACM/CPG interworking from CUCM SIP 181

Last Modified

Apr 14, 2010

Products (1)

  • Applications for Cisco Unified Application Environment

Known Affected Releases


Description (partial)


If a PSTN incoming call from A via PGW to CUCM in SIP is forwarded by an IP Phone (B) to an IP Phone (C), the redirection number (C) and redirection reason (busy, unconditional, no reply) cannot be provided by PGW to PSTN in SS7 ACM message (for busy, unconditional) or CPG message (for no reply). This information is coming too late from CUCM in SIP UPDATE and should come ideally in SIP 181 so that PGW can populate SS7 ACM or CPG accordingly.


PSTN (A) calls IP Phone (B) which forwards to IP Phone (C)
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