Calls Dropped on Hold

[skinswin]

This is an ongoing problem for over 2 years since the building was constructed. Intermittently when an incoming call is placed on hold the caller is dropped. It happens on 6 different lines. Some are in a hunt group, others are not. It doesn't happen at any particular time, the amount of calls, weather conditions, etc. Nothing consistent at all. We can go for over 1 week without dropping a call on hold, then we will drop 4-6 in an hour. We only drop calls when they are placed on hold or they are parked.

We have been working with the telephone company to try and resolve this problem. We had a Norstar system, that was then upgraded to a BCM 400. We have tried 2 BCM 400's. We have replaced all cables to the BCM, all incoming and outgoing wires, punch down blocks etc. The local Telco's Nortel expert has gone through our software settings and verified everything is correct. Telco has checked all voltages, line currents etc. We have placed balanced loop current attenuator on all lines. All to no avail.

Any input you can give into this problem would be greatly, greatly appreciated. The telco is grasping at straws, and the next step is to re-route our dial tone through another CO.

Thanks in advance!!

Jeff

 

[gecko202002]

Had a similar problem with a client in NYC. Also with hunting and non-hunting lines. There was a problem with the telco block - whenever a certain number of calls were active on the block, the block would short and all calls on that block would drop. Tech was out there we flooded the system with calls and without fail, once the calls reached a certain number, the block shorted and all calls dropped. Took months with many replaced parts and return trips to find this.
Don't know if this helps or not.

 

[skinswin]

I'll let the telco know about the block, since I'm unable to change their block. We will also just lose a call when all other lines are open as well. Do you think a short in the telco block could still be a possiblity.

Thanks,

Jeff