Having two issues on a NEC 2400 MMG. Hoping someone out there has some ideas:
Both issues are on the NMC paths:
NMC 0 - When I have this active the whole system has dialtone but you can't actually dial -- you press numbers but the dialtone just keeps going.
NMC 1 - This one works on all my phones except the top shelf on my third (last) stack. This has a number of digital lines as well as a CCIS connection. On all of these lines, including each way calling on the CCIS you hear nothing. No dialtone or anything. If you call one of these extensions it does ring, it has power and you can see who is calling but you can't hear them and they can't hear you. The only other thing I noticed is the LP Processor on this shelf has gone into a permanent make busy state. I have tried replacing the processor card as well as the BS-07 and BS-08 cards one by one that that connect to the processor but it stays in make busy. The other LP on this stack is working. I have otherwise tried replacing the SW05 card and the PC00-D cards.
I have no other error lamps lit and am not taking active error messages except as I replace out cards.