No, but you can make sure that the IP trunks have different Trunk numbers i.e. 249, 248, 247...and so on. I would have the AT not work if two sites had IP trunks both set to 100.
I have an SCN using just one IP trunk group (30) on each side. They have one VM Pro and I am concerned if someone calls into the remote office and the call goes to voicemail then they press 0 to return to the local operator that it may be utilizing multiple trunks.
In System Status I am also showing quite a few QOS errors.
Basically the customer at the remote site is complaining that sometimes they get an "Inobtainable" when trying to access the voicemail or dialing an extension across the network. I have reviewed the settings with Avaya support and they don't see any issues in the way it was configured, but it still has to ride across the customer's private network which they are using an MPLS circuit.
Try it your self and open System status.
See what happens whit the call.
You will see if AT works or not.
If it doesn't then change the line group number.
I am not sure but i think the line group number do not have to be different to get the AT working.
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