Norstar PRI as Tie-Trunk Group??

[howdydoo]

Dear Tek-Tips,

Our Norstar MICS 7.1 is connected to another, "distant," PBX (non-Nortel) via a T1 PRI. The other PBX wants to call out on our CO Trunk Pool, so in his setup message he sends our pool access code, "8," plus 3 digits (8N11), 7 digits (8NXXXXXX) or 11 digits (81NXXNXXXXXX). He is the PRI "Network" end; we, the "Customer" end. He cannot set or recognize Call-by-Call codes, but he can set the "Number Type" parameter ("Local," "National," "International," etc.).

The "N11" codes work fine. With any numbers longer than those the calls fail or mis-route to a target line (in those cases where the last 5 digits of the incoming number happen to match). Our target numbers are of the format, "22XXX;" our extensions, "2XXX."

We can send calls to the distant PBX in this manner, and he routes them just fine. All his DN's are "3XXX" and his PSTN access code is "8."

Our Norstar should have no trouble sorting incoming numbers beginning, "8," from those beginning, "2," but it doesn't seem to try. It blindly whacks off the last 5 digits of the received number (however long) and routes on them.

Is this a hopeless quest, or has anyone had luck using a Norstar PRI like an E&M Tie Trunk in both directions?

And should I be messing with these parameters (that I obviously don't understand): "UDP," "CDP," "MCDN," "ETSI?"

We got the PRI for snappy call setup. Maybe we're going back to old-fashioned, but reliable, CAS/DTMF.

Thank you kindly, "Howdydoo.

 

[hawks]

Make sure you have Remote Packages & COS set up that's the only way you can come in on 1 trunk and go out on another.

 

[howdydoo]

Thank you for your kind reply, Hawks,

I wish it were that simple. I'm positive all the remote access stuff is set correctly; the system routes certain incoming PRI calls (those of 5 or less digits, like, "8411") to the correct outgoing trunks (or to the correct target line) just fine. Won't do more than 5 incoming digits, however, so I'm out of luck with 7 or 11 digit PSTN numbers.

Comes down to THE QUESTION: Can one get the Norstar to treat the PRI like a two-way E&M trunk group, NOT like a DID??

This might involve the parameters, "UDP" vs "CDP" vs "nothing," (which is how it's set now). What do those do exactly?

Thank you, Howdydoo.

 

[allworxguy]

Have tried lengthening the private DN length to 11?

Marv ccna

http://www.telemarv.ca

Sales, Installation & Service for Norstar, BCM, Samsung & Allworx Serving Ottawa and Eastern Ontario since 1990

 

[hawks]

Yes you should be able to use the PRI the way you described. First question I have is why does he have 8Nxx if he is calling people on the MICS he does not need the 8. He should be able to dial 22xx and hit whatever extension you have that Target Line pointed to.
The Remote Packages I spoke about are for the MICS to allow calls in and out of its trunks. Take a look at this thread its old but it will help.

http://www.tek-tips.com/viewthread.cfm?qid=885956

The UPD, CDP & MCDN are for private networking if your trying to use your MICS trunks to make an outside call from the far end then these should not effect you.

 

[howdydoo]

Thank you all for your thoughtful replies.

Remember that we're talking calls INCOMING to the Norstar over a PRIVATE network via a PRI, so it's all about how the Norstar processes the incoming digits. Calls should be routed to target #s on the Norstar ("22XXX") or to the PSTN via our COTs ("8N11," "8NXXXXXX," or "81NXXNXXXXXX").

Only incoming calls of equal or less than 5 digits work (that's the length of the target #s), but don't let that distract you. I've done a bunch of testing, and the problem is that the Norstar treats the PRI as a DID. How can I get it to behave like an E&M (and accept more than 5 digits incoming)?

Probably has something to do with the UDP~CDP~nothing parameter, if it's possible at all. Anybody know?

Sincerely, howdydoo.

PS Speaking to your suggestions: The Private DN Length parameter determines how many digits ARS will wait for on OUTGOING calls. The referenced link ("Hawks" was around back then?) doesn't speak to setting up the PRI correctly for incoming calls, and the guy, "Dtone," never said if he got it to work. I have my doubts, unless he went back to T1 CAS (E&M).