IP Telephony and Phones

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We are getting following error and wuld like to know solution for it.Here is the error message from the Gateway:%VOICE_IEC-3-GW: H323: Internal Error (H323 Interworking Error): IEC=1.1.127.5.21.0 on callID 14269 GUID=80FC8A6                          ...

Buenas tardesTengo un problema, tengo implementado una central IP con 4 IVR, y necestio poder limitar las llamadas, cada cuatro minutos de una llamada se corte automaticamente con un previo aviso automatico de que la llamada sera cortada, alguna idea...

j0h by Level 1
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Hi all, I've configured a unified SRST with MGCP fallback and I think everything is configured properly, but phones never try to register With the SRST,so, when I issue the command debug ephone detail. nothing appears. I'm using CUCM 8.6.2  >> 10.10....

Can someone please help, I have Auto Attendant setup and when a customer ring after 5pm when the company close, the call get forwarded to a manger mobile number, can any one please show me where I can change the forwarding in CUCM?Thnaks

I have the cucm 9.0 I install and configed cucm pub sub ok, the ip phone can register to pub,but when I change the phone to register that sub,then can't registerafter I googled some document,I checked the following 1. Network connectivity between the...