Hi,

     We have a Nortel Option 11C (with Succession 3.0), with 3 PRI cards
connected to:
1. PSTN
2. ITG network to our other 2 offices on a 4-digit dialplan
3. SIP media gateway (for Asterisk)

     We normally dial access code "9" for outside PSTN calls, and when
the SIP media gateway was introduced, a new access code "8" was created.
Inbound calls from Nortel (originating from the PSTN, from any office
handset) are being delivered to the PRI trunk on the SIP media gatway
then onwards to Asterisk. However, any outgoing calls made from
Asterisk, into Nortel via SIP gateway is being rejected.

     To narrow down the possibility, we have tried 2 different SIP
gateways - AudioCodes Mediant 1000 and Cisco AS5300, and they both
exhibit the same behavior (incoming works fine, ALL outgoing calls are
being rejected). Attached is the capture of the console message on the
Nortel side while an outbound call was made.

Calls from x1567 (Cisco 7960 registered to Asterisk) to x1500 (digital
extension on Option 11C) is being reject with CAUSE #21.

     The capture also shows a successful inbound call while 4169771414
(digital handset on Opt 11C) called x1695 (Meetme on Asterisk) via the
same PRI card (Ch. 4 23) was completed with release cause #16.

     We suspect there is some authorization code or ACL that needs to be
put in place, so that calls made to the Opt 11C can be routed. We have
tired talking to 3 local Nortel vendors, AudioCodes and none has been
able to help us rectify this issue. We are looking for someone who can
help us identify what the problem is so that we can get this working.


Thanks
-Heison

-- 
Heison Chak                Email: [EMAIL PROTECTED]
14 Bartlett Rd.            Phone: +1 905 887 4694 x1508
Markham, ON L6C 2Y6        Toll:  +1 888 887 4694 x1508 
Canada                     Cell:  +1 416 417 8893
                           Fax:   +1 905 887 4694
                           UK:    +44 0207 099 5883
                           HK:    +852 3596 4261 

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