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New Member

Calls to a PBX Phone through a T1 are not going through

Hi All,


I have a situation where I am trying making a call from HQ to a phone connected to a PBX at a remote site.  I am receiving a Fast Busy signal when I am making the call.  The call is supposed to go through our IP network to the remote site Voice gateway then out the T1/CAS interface to the PBX.  


Within CUCM, the call routing looks to be set up correctly and the dial pattern points to the remote gateway T1 Interface.  Also within CUCM, that voice gateway and T1 interface are registered.


Can anyone please provide some insight into this?

Thank you,


New Member

You need to post HQ and

You need to post HQ and Remote side Configurations here because its hard to tell without config files, it can be issue with dial pattern command or remote routers connectivity issue but cant say for sure until I see config here

Try to use DNA to know 

Try to use DNA to know  exactly where the problem lies...........