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PRI going down randomly

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Oct 3, 2002
4
US
I have a Merlin Legend R7 V10.0
I have been using a PRI for outgoing calls for 2 weeks without problems (the card was originally setup as a T1 supertrunk). I had incoming telephone numbers transfered onto the PRI and the PRI started going down randomly 10 minutes later. The PRI comes back up by itself and down again randomly. The provider says the D channel is up, but the B channels are blocked.

Other info: 23 lines (825-847) are setup in pool 890
B Channel setup 1001, 1002, 1003 - 1023
100 CSU-DSU card in Slot 10
Hardware Vintage: 0A, Application Vintage: 18, Firmware Vintage: 91

 
What are the settings of the T1 & PRI?

T1 Settings to verify:

Frame Format
Suppression

PRI Settings to verify:

Switch Type
NI1, NI2 or Custom

Also, in Maintenance, are there any errors on the T1 Module and what do the error events look like?

 
I have seen this when the CO is set to NI2. the outgoing would work fine. THen as soon as you called a DID it would busy out. I am betting they are not set to ATT Custom.
 
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