I am just deploying my first voice gateway using IOS 15 and experiencing something unusal which I am not sure if its due to a change in some default config..
When a user dials a number using a 9 prefix for outbound call i.e 902071234567 when the call is connected via the voice gateway the connected number on the display of the phone is changed to 02071234567, i.e. the leading 9 is dropped.
This isnt being done via CUCM as the Dial-Peers on the Voice Gateway match using 9T and I can see the call reaching the gateway and matching the correct dial-peer, obviously as expect the dial-peer drops the 9 so the call can be presented to the ISDN in the correct format, I wouldnt have expected this change in number to make its way back to the IP phone display though.
Adam - thanks for the reply - I had just found that command 5 minutes ago and applied it, no customer on site at the moment to test so will report back tomorrow.
I have looked through several of my other voice gateways which in general are using 12.4(22) which don't have this command yet they retain the 9 in the phone display on outbound calls. All are linked to the same 8.5 CUCM, any ideas why the output varies?
It could have to do with how the route patterns are configured. Some route patterns could have a DDI of predot to strip the 9, some could have the DDI on the route list. Some may not strip the 9 at all. This all affects what is seen on the phone.
My suggestion would be to take a look at a route pattern for this gateway, and comapre it is one that is pointing at one of your other gateways.
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