[Asterisk-Users] Mitel 3300 PRI problems

[Richard OSS]

I had this same problem with SX2000. I think you have to configure the Mitel to "Speed Dial" to your Asterisk server. What I think is happening is that the PBX grabs a trunk but does not "dial" into Asterisk.
   
  Ask the person configuring the Mitel PBX to setup an extension (e.g. 1234) when callers connect to the PBX. That's what they had to do to get data to my Asterisk.
   
  Goodluck.
   
  richard

John Fulton <jfulton at arctic.net> wrote:
  We are attempting to interface Asterisk with a Mitel 3300.

Initially we tried FXO Ground start T1 and had many problems with that. Even spend 5 hours on the phone with a Digium engineer and were unable to get it working right.

Next we turned it up as an E&M T1 and that actually worked great. No problems at all.

Now we are testing a T1 PRI configuration and have been unable to get it to work right. We tried different switchtype configurations. We are back to "national" (NI-2). I am setup as pri_net. And I know that is working right because if I set the PRI for pri_cpe, I get error messages in the log that the remote end thinks it's a cpe and to change the signalling.

When a call it placed to the PRI, I get nothing. No answer, no data across the D channel, yet the Mitel says it is successfully grabbing a trunk in it's debugs.

I turned up pri intense debug span and the ONLY thing I get is the following over and over again. It seems to be at regular intervals and I see nothing else even when I place a call from the Mitel to the Asterisk server. Any ideas? Here's the debug output:

T203 counter expired, sending RR and scheduling T203 again
Sending Receiver Ready (115)

> [ 02 01 01 e7 ]

> Supervisory frame:
> SAPI: 00  C/R: 1 EA: 0
>  TEI: 000        EA: 1
> Zero: 0     S: 0 01: 1  [ RR (receive ready) ]
> N(R): 115 P/F: 1
> 0 bytes of data
-- Restarting T203 counter

< [ 02 01 01 e7 ]

< Supervisory frame:
< SAPI: 00  C/R: 1 EA: 0
<  TEI: 000        EA: 1
< Zero: 0     S: 0 01: 1  [ RR (receive ready) ]
< N(R): 115 P/F: 1
< 0 bytes of data
-- ACKing all packets from 114 to (but not including) 115
-- Since there was nothing left, stopping T200 counter
-- Stopping T203 counter since we got an ACK
-- Nothing left, starting T203 counter
-- Got RR response to our frame
-- Restarting T203 counter



  ---------------- http://www.telalaska.com -----------------
TelAlaska, Inc.                                 John Fulton
201 E 56th Ave.                    Senior Network Architect
Anchorage, Alaska                 Cisco Certified CCNA/CCDA
99518                               Microsoft Certified MCP
907 563 2003                        A+ Certified Technician
Fax 550 1646                             jfulton at arctic.net
------------------ http://www.arctic.net ------------------
Interior Telephone Company         Mukluk Telephone Company
Eyecom Cable                        TelAlaska Long Distance
TelAlaska Networks                Seward Net and Arctic Net
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