martinyoung

I know absolutely nothing about Nortel but at the Definity the trunk group will never come up until the signal group does. The signal group is looking for a D channel response from the other end. When you status signal group x, what do you get?

You do not indicate whether the two switches are directly connected or go through a CO but I read your message to imply the Nortel is not able to provide the D channel response. A T1 is just a pipe and you can configure it any way you want it but it must be configured the same at both ends. If the Meridian cannot do ISDN-PRI then you cannot use that at the Definity.

Try configuring the DS1 as a standard T1 using robbed-bit or common channel.

One other question. Is UDP turned up in the Definity? You will need that and AAR to be able to route calls to the Meridian. DCS won't work because that is intended to be used between Avaya switches only.

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Marty
Retired Avaya DSIC tech