One of the SPIDs on our 3845 is going vlaid and establishes connectivity and the next moment goes invalid. Therefore Layer 2 is just bouncing like every 4 secs. I had telco test, verified SPIDs. I am also observing some strange 'show isdn status' output.
When both SPIDs are valid the output seems normal. But when the second SPID becomes invalid layer3 in the 'show isdn status' is as follows:
Layer 3 Status:
0 Active Layer 3 Call(s)
CCB:callid=0, sapi=0, ces=2, B-chan=0, calltype=INTERNAL (BR0/0/0) SPC
Active dsl 0 CCBs = 1
The Free Channel Mask: 0x80000003
Shouldn't CCB be allocated only when there is an active call? I am little confused with this output actually.