Dialing problem

[nortelcs100e5]

Hi all, PBX is 61c Rls 4.5, having 30 COT loop lines, i just upgraded that PBX from old rls 25.40 with complete core replaced. Now i am having an issue of dialing problem on COT lines |(i don't have ISDN PRI in that PBX). Some times when i dial complete number after accessing COT line (No NARS/BARS, just route access code) i get dead air mean call wont complete, it is random out of 5 calls one call wont get complete. replaced XUT card to check if it is hardware problem but still same problem exist. Route timers are set to default.Any advise???

 

[acewarlock]

Unless you use a buttset to access every line one at a time, your not going to prove anything, because more then likley your route is setup as Round Robin (RRB) and every time you dial the access code you will get a different trunk.

DIDN"T you already ask this same question either here or on one of the other Forums today?




This is a Signature and not part of the answer, it appears on every reply.

This is an Analogy so don't take it personally as some have.

Why change the engine if all you need is to change the spark plugs.

 

[acewarlock]

And I also told you in the other forum, you should never use LOOP start trunks on a Meridian PBX as the trunks may not release after the call is hungup because LOOP start trunks don't have any Supervision. You should always use GRD start trunks.




This is a Signature and not part of the answer, it appears on every reply.

This is an Analogy so don't take it personally as some have.

Why change the engine if all you need is to change the spark plugs.

 

[56BelAir]

Make your phone a maintnance set
CLS =(mta)
dial your spree code + 91
ld 36 ## "I believe its been a while"
trk # route # trunk ##
test all trunks in that route you should find your problem that way.
Also you should change over to Ground start as stated above.

 

[nortelcs100e5]

I tested all CO line with butt set and they dialed out OK every time, with maintenance set when i test trunks i get the same dead air after every 4 or 5 calls. it is random with every trunk 4 or 5 times it dials ok but 6th time it is dead air. Not always 6th time some time on 4th try it wont dials out.
I will replace them with ISDN PRI but it will take time also these CO lines were working OK with Old Core which was replace to upgrade that PBX, I also swapped XUT card with no effect.

 

[acewarlock]

Using your Buttset proved the trunks are good, so the problem is more than likley a trunk card. If you used a Maintenance set as belair56 said to do then you should know what the TN is of the trunk that didn't have Dial tone. If you didn't use the Maintenance set as discribed, you could use any phone and do a trace in LD 80 when you hit a dead trunk and that will give you the TN.




This is a Signature and not part of the answer, it appears on every reply.

This is an Analogy so don't take it personally as some have.

Why change the engine if all you need is to change the spark plugs.

 

[TDMtek]

Use LD 80 and TRAC each test call, if you are on the same TRK each time, move it to an unused TRK port or replace the card and retest.

Because you stat that you just upgraded to 4.5 you may have a card “vintage” issue. I don’t know of any; but I have had to replace some cards with some software upgrades in the past, I am looking at 5.5 now and I will have to replace all my NT5D12 PRI cards to newer revision levels.

 

[nortelcs100e5]

I alreday explained that when i use maintenance set it happens with random trunks, however with 12-0-9 card it has more problem as compare with other cards but its happening with almost all COT TN.
Regards.

 

[johnpoole]

so you dial acod, do a trac, test that line with a butt set and it does have dial tone with the butt set but not post acod? it's not the card? so it's a switch setting.. are all your trunks ground start.. is the switch ground good...

it;s been over a decade since i worked on a ground start line, of course they all used to be analog.. a butt set, and time will fix any problem

john poole
bellsouth business
columbia,sc

 

[TDMtek]

You haven’t stated what type of TRK CARD’s you have in the PBX; I hope they are all NT8D14’s

When you do a TRAC on the failed test call, look at the CARD and see if each TN that failed is on the same type of card & maybe the same Version; AA-AB-BA.

You may have a bad CONF/TDS card that is sending a distorted tone that the CO is ignoring, so the call might not be dead, it may be a partial number.

 

[acewarlock]

Quote:
"Hi all, PBX is 61c Rls 4.5, having 30 COT loop lines"

AS I stated above, you should never use LOOP START Trunks on a Nortel Meridian PBX, because they don't have supervision and don't release correctly. What probally is happening is you access a trunk, hangup and then try to access it again and there isn't any Dial tone because the trunk has not been released yet because there isn't any Supervision. so as far as the trunk is concerned is is busy and won't give you dial tone.

So until you get the Telco to change then to GRD START and you cahnge then in the switch to GRD START, your going to have this problem and there is know other way to fix it.




This is a Signature and not part of the answer, it appears on every reply.

This is an Analogy so don't take it personally as some have.

Why change the engine if all you need is to change the spark plugs.