Dial ACOD on Incoming Tie Line?

[ba7389]

What would prevent an incoming tie line (PRI channel) caller from directly dialing an ACOD in the Nortel (old 25.40b) switch? TGAR on channels is set to 0.

Thanks,

Bruce

 

[bhassell2000]

I thought you had to have CLS MTA (maintenence set allowed) to dial an ACOD

Thanks,

Buddy

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http://www.linkedin.com/in/buddyhassell

 

[ba7389]

And you would be correct. Thanks for quick assist Buddy.

 

[SL1M1]

Usually thats TARG 'Route' to TGAR 'Set' restrictions if they match they'll be barred from dialling ACOD

Cheers!!

 

[ba7389]

Route is TGAR 1 and "set" (PRI channel) TGAR 0, but would not allow dialing until CLS set to MTA.

Also noticed that a print of the TIE channel does not display MTA in the CLS. Is that normal? A channel without MTA set will not dial.

 

[KCFLHRC]

I have read this post and still cant figure out what you are trying to do. Are you trying to dial the ACOD from a phone or another trunk? MTA has nothing to do with dialing the ACOD. Mta is Maintenance Set Allowed for directly accessing commands like ld 36.

 

[KCFLHRC]

MTA is only defined in set programming, not at the trunk.

 

[ba7389]

Explanation - The PRI connects a Nortel Option 11C with a TDM/SIP gateway to a server-based VoIP PBX. We are just beginning the migration of users from the TDM (Nortel) switch over to the VoIP solution, and the gateway provides dialing transparency and alternate routes until the migration is complete.

The ACOD issue was that SIP phones on the VoIP side were not able to access a Valcom paging unit (loop start trunk on Nortel PBX) via the tie lines. CLS MTA on the tie line channels appears to have resolved the issue.

The CLS MTA command on the PRI channel did not error out, but MTA does not show in a print of the channel. I took the entire loop out and rekeyed to confirm (at least in my mind) that CLS MTA corrected the issue. I set CLS MTA on the first incoming (to Nortel) channel only, and the ACOD worked. I busied that channel to allow hunt to the second channel (without CLS MTA), and the call failed.

So back to the original question - With a TGAR 1 on the route and a TARG 0 on the incoming channel, what else would prevent dialing of an ACOD on the incoming tie line?

 

[KCFLHRC]

I stand by my original response because I don't see CLS MTA in the NTP's for LD 14. I see MIA which is Manual Incoming. The only other thing I would suggest to you is set the trunk for UNR in CLS instead of the default CTD and see if that works for you.

 

[ba7389]

Trunk was set UNR from the beginning.

I did the same look through the NTPs. Can't explain, but at least it works. If anyone could explain, would like to understand, since this is not likely the last tie line permissions issue to be addressed through this phased migration.

Thanks to all.

 

[GHTROUT]

A TIE trunk is considered a station on the PBX and it has CLS, TGAR, etc.

If you do not want anyone on a TIE line to dial through your PBX, set the CLS of the TIE trunks to SRE and make sure every route to Telco is NOT a TIE.

I see telco PRIs set as TIE all the time (duh!). People don't realize many restrictions on the station simply do not apply to calls over TIE.

http://www.ghtrout.com/files/CLS_Restrictions_Matrix.html

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