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Old 04-27-2016, 01:37 AM
mrossk mrossk is offline
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Join Date: Apr 2016
Location: Frankfurt, Germany
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Question T1 robbed bit to 3rd Party IVR does not communicate with IPO 500 9.1

Good Morning,

we're having an IVR Server running with a T1 CAS.
right now, the old PBX (Nortel Meridian) simulates 24 Analogue Channels with Loop Start.

Client calls in on ext. 100, call is being forwarded to 121-145. IVR answers on first available channel

New Situation:

The Vendor (IVR) gave us all Specs to connected the Server to the new IPO 500 9.1.:

D4, AMI ZCS, FX, Loop Start.

So far so good.

You can see the Line communicating with the IVR, but I do not get a Voice connection. It immediately says Line Down (on the IVR).
when dialing the Incoming Line ID of a channel, the channel opens and shows connected (in Sysmon)

My question:

How do I simulate Analog Extension (members of group 100) and route them the IVR behind the T1 robbed bit?

Vendor is Edify, No Document in DevConnect,


need to 24 Extensions routed to IVR
Extensions need to be member of Group 100
IVR can forward call to group 110 to talk to a Call Center Representative

Your Help is appreciated!

Thank you very much!


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