Re: PRI is not down when the MGCP VG fails to talk with CCM
If you have a switch or router on the network, that fails, you expect the frames/packets to route around the failed device. If I have T1s or PRI that can not accept a call I expect calls to be able to route around it. To do this the PRIs must indicate to the connected network it is down. I expect the loss of Layer 3 for X seconds(CCM/CUCM) to result in both layer 2 and Layer 1 going down. The CO or PBX will then route calls around the failed T1 or PRI. PBXs and COs work this way. [So I think you are wrong ;-)]
IntroductionCUCM Routing RulesDial String implementation PolicyCUCM Routing LogicSIP URI Call Routing Analysis+++ Case Study: 1 ++++++ Case Study: 2 +++Conclusion
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