Hi, all ip phone 7945 is not registering on CME 14.1 on SIP, while other ip phone like 8821/8841 are getting registered. ccsip message shows SIP/2.0 401 UnauthorizedTried to delete ITL file on cisco but the phone hang and restarted.Appreciate your su...

Hi,We are having issue with outbound call having Preconditioned Failed error. Inbound call is working fine.Checked with our ISP but they are saying internal configuration. Please assist. Below configuration and attached logsvoice register pool  1 bus...

recently we have added new phones to our existing voice network. We added cisco 7945G sip phones but we have some issue on outbound call. The voice will automatically drop after 20 sec   seems like we are not getting acknowledgement from the phone   ...

Hi, Does any one any tried to do SIP trunk on Grandstream Pabx and CUCME router? i tried to do sip trunk but not working. Please help how to configure sip trunk   Thanks and regards

Hi, I'm newbie for CUCM and really need some advise and assistance   We just buy new Cisco ISR 4351 router with T1/EI PRI port and CUCME enhanced lisense. Our plan is to connect the router to pstn network thru PRI and need to connect cisco, huawei an...