we are facing a problem with FXO ports,We are using vic2-4FX0 with 2801 router (CCME).When we execute cisco IVR script (its-CISCO.22.214.171.124.tcl) for incoming call legs (for my company PSTN number) , its work fine. but when external user from PSTN disconnect its phone my internal phones or operator phone continuously rings. there is no automatic disconnection possible. only one way operator can disconnect his phone or stop ringing by manually pressing button on his phone set. Without execution of IVR script all things work fine no disconnection problem occur .
you need to configure supervisory disconnect based on tones. I cannot help you with exact commands, I would need to know where are you located and the tones that the CO switch sends when the caller disconnects.
Start with the examples, try to figure out the disconnect tone, and if problems post your config here.
This is the only solution with FXO ports. Else, you would need to use ISDN BRI, on which the problem never happens.
IntroductionCUCM Routing RulesDial String implementation PolicyCUCM Routing LogicSIP URI Call Routing Analysis+++ Case Study: 1 ++++++ Case Study: 2 +++Conclusion
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