Incoming call fail to establish on PSTN number

[csco11103320]

While trying to configure direct line on my CUCM, PSTN line has been terminated and 7 digit number configured on my IP phone while Ringing from outside I can see the incoming call on my handset

However the issue is when the call is answered the call continues to ring unable to establish a call

Kindly please find the debug and running configuration which may help to provide real time problem.

Thanks in advance

[Manish Gogna]

Hi,

What type of gateway is involved in the call flow? if it is h323 then based on the symptoms, try the resolution from the following post

https://supportforums.cisco.com/document/13376/ip-ip-h323-ios-gateway-calls-between-two-remotely-located-cisco-callmanagers-fail-one

HTH

Manish