BCM 400 PRI Dropping calls

[TeledataInAZ]

I have a customer with a BCM 400 r3.7. Just recently the T1 card is going into free run and dropping the circuit. Then eventually synchs back up and works. I have replaced the T1 card and the telephone company has tested the circuit and is pointing the problem at us. This problem seems to start around 815 every day. Sometimes when the BCM is rebooted the problem will go away for the day but then begins again in the morning. I'm not sure what I can really check in programming, its been running for years and the problem just began. Any ideas? TIA

 

[Dasheen]

make sure system is patched up and then have telco come to site and do a proper end io end test for at least 30min

 

[oldestgeek]

I had the exact same problem on a 3.7. I upgraded to 4.0 and it worked for a few weeks and then reappeared. Telco replaced the smart jack, installed a new circuit, I replaced the PRI MBM and cable and it still came back. The system was patched and the t1 ran error-free until the the trouble would come back. I eventually replaced the system with a BCM450 and haven't had any trouble with it in nearly two years. I honestly believe it was a power supply, bus, or mainboard problem.