Can anyone tell me how to ask the telco (AT&T) how to properly provision a BRI circuit for Voice? We need to have the ability to receive voice calls on either directory number. They can't seem to get it right. For example: If we receive a call on directory number 1 we would like to be able to receive a second call to the same number on the second b channel. The telco does not know how to do this. They first installed ACO (Additional Call Offering) but it does not really work. As the moment we try to pick up the second call, the gateway releases it. Then they tried call hunting to the second number and this almost works except that we get the incoming called number of the second spid instead of the first one.
example: PDN XXX1511 SDN XXX1548 if we get a call to the 1511 number and then while we are on that call we get another one to that same number, it comes into our gateway as 1548 instead of 1511. We need to have the incoming called number info correct so that we can properly route the call.
Thank you in advance for your help.