BCM 1000 fails to make outgoing calls over T1 Pri 2

[c4retired]

I have a client using a BCM 1000, that has a T1 trunk (Pri) that fails to allow an outside call from users during the start of the business day. It does not appear to be happening at any specific time, and occassionally all will work fine. Then it will start again. I have checked all the programming and logs and see no errors with the equipment. The client has also had the service provider troubleshoot the issue and they see no problem with their service. I am stumped. Does anyone have any suggestions as to what may be causing this?

 

[senk1s]

Check the night route programming

 

[c4retired]

I checked and adjusted the night routing. Still drops while out dailing in the early morning hours. Some days it does not happen and works correctly. It is becoming increasingly frustrating. Presently users press 9 to access the T1 and while dialing the remaining digits they get disconnected (phone returns to date and time). And once again the provider assures me that their equipment and lines are fine.

 

[senk1s]

Make sure the settings between the CO and hte BCM match
If using NI2, and the CO is a ATT5ESS - ask them if the BCAS is OFF
That used to be the symptoms in a Norstar

 

[c4retired]

I relayed the information to my client. Who in turned relayed it to the service provider. The service provider hasn't a clue what this is. What does "BCAS" stand for? Maybe they recognize it by another name?

 

[senk1s]

B-Channel Availability Signaling

 

[c4retired]

Thanks. I'll relay it and keep my fingers crossed.

 

[AlquestTech]

I know this may sound pretty basic but we have a lot of PRI's here and usually up down symptoms (if not a problem from the CO) are due to cabling.

Check your connection from the PRI Interface and your DTM card.
Obviously, the shorter the distance the better.
Insure it is on proper cabling (No flat cabling..)
Away from EMI source.
Check RJ45 carefully. make sure there is no strain on the connector.

Check Cabling from Telco NID to PRI jack.

We have had up/down problems that were due to,

1) Coils and excessive length in the Cable from the NID to the Jack.
2) A RJ45 connect or solid copper CAT5 cable that would test OK but have a lose connection once a bit of strain was on it.
3) Someone installed Silver Satin on the PRI - (I'm surprised it came up in the first place)
4) the PRI Cable running by a compressor motor that induced voltage when it started.

The best way is to test for loss and channel up status - especially with the CO so they can tell you if they see it going up and down.
What you describe sounds like it keeps going up and down at times.


Again, I know this is all basic, but sometimes the simplest solutions are the correct ones.

 

[c4retired]

Thanks I'll keep those in mind. It's been a while so far and no complaints from the client.