Site A: I have digital phones hanging off a Fujitsu 9600 PABX. This is then connected to a Cisco AS5300 gateway with IOS c5300-js-mz.121-3a.XI2.bin.
Site B: I have IP phones and Call Managers 3.1 with a 3725 gateway using IOS c3725-is-mz.122-13.T.bin.
The situation is if site A digital call site B IP phone everything is OK. Site B then transfer (or call forward all) to an external mobile number via the 3725 gateway with an E1 connection, the call just dropped.
I have tested routing between the two gateways and everything is OK.
Anybody come across this problem before or know whether IOS on the two gateways are OK.
IntroductionCUCM Routing RulesDial String implementation PolicyCUCM Routing LogicSIP URI Call Routing Analysis+++ Case Study: 1 ++++++ Case Study: 2 +++Conclusion
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