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[AlquestTech]

I have a Norstar hooked up[ to a Cisco Router and out to the PSTN all via PRI.
Everything has been working fine for a few years now.
Lately, however, I have customers complaining about getting cutoff in the middle of their conversation. The message they get on the display is "inv ie content" which I thought was only active during call setup.
Any ideas what may be causing this?

 

[RikRodgers]

Has the network side of the circuit been experiencing trouble also?

 

[AlquestTech]

Not that I know of and we do have several other locations going out similarly on similar but separate equipment and they have not reported any problems like this

 

[RikRodgers]

What alarms have you been getting? You might want to ask the CO to put a 24hr monitor on the circuit. If you're getting excessive bpv's or oof's, you'll likely notice it first on your voice equipment.