Hi Yenosh,It depends how your setup is but normally an inbound call flow will be as belowMobile --> PSTN network --> ISDN PRI line --> Voice Gateway --> MGCP/SIP/H323 --> CUCM --> IP PhoneNormally ISDN PRI have a range of DID numbers that will be ass...
I will suggest you to check if there is any issue with network that can stop TCP message from phone to primary CUCM server or vice versa. You can do following:
1. Try to ping this IP phone from CUCM server and check if it is reachable. if not then th...
Hi,It is the phone that decides when to un-register from SRST router and register back with CUCM. As soon as the connectivity comes UP with CUCM phone will register back to CUCM. In the 7965 phone settings-> can you check if the primary CUCM IP is c...