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<TITLE>RE: [Asterisk-Users] Nortel Option 61C PBX?</TITLE>
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<P><FONT SIZE=2>> -----Original Message-----</FONT>
<BR><FONT SIZE=2>> From: Rich Adamson [<A HREF="mailto:radamson@routers.com">mailto:radamson@routers.com</A>] </FONT>
<BR><FONT SIZE=2>> Sent: Thursday, January 08, 2004 10:26 AM</FONT>
<BR><FONT SIZE=2>> To: Asterisk-a-users-list</FONT>
<BR><FONT SIZE=2>> Subject: [Asterisk-Users] Nortel Option 61C PBX?</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> Anyone interfaced * to the Nortel option 61c pbx via T1's, pri, etc?</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> Need to begin planning the implementation, purchase cards, etc. Any</FONT>
<BR><FONT SIZE=2>> recommended approaches, configuration problems, etc?</FONT>
<BR><FONT SIZE=2>> </FONT>
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<P><FONT SIZE=2>We have had * interfaced to an Option 11C here in our corporate headquarters in _non-production_ use for some months. We have the Nortel TMDI card with software D-channel. We're on Release 25 Issue 30+. A 61C should be no different, given similar cards and software versions.</FONT></P>
<P><FONT SIZE=2>After a patch to libpri by Martin Pycko at Digium (to deal with odd but apparently technically correct 5ESS behavior by the Nortel switch), we've been successfully using 5ESS-mode PRI. The Nortel side is configured as a PRI TIE trunk, user side, and * is the network side (signalling=pri_net). NI2 might also work, but we ended up using 5ESS instead. Caller id is transmitted to and from SIP extensions on * and also over IAX2 trunks through to Nortel digital sets.</FONT></P>
<P><FONT SIZE=2>We started with a T100P, which worked fine, and a while back upgraded to a TE410P, which also works fine. Once in a while, the Nortel card will go into red alarm, but I believe this is a problem with our 11C because we always need to disable and FDL the whole TMDI card, and because the * always comes right back up when the 11C gets itself straightened out.</FONT></P>
<P><FONT SIZE=2>Tomorrow I will be interfacing the remote side IP-PBX gateway to an 11C Compact with a DTI card (just E&M signalling, no PRI). After some testing, both gateways will go into production, carrying 4-6 concurrent calls over an IAX2 trunk. I'll let the list know how it goes.</FONT></P>
<P><FONT SIZE=2>Randy Johnson </FONT>
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