On 10/31/14, 6:17 AM, David Wessell wrote: > So two different answers :) > > It's a 904 connecting on the t1 0/2 DSX interface. > > The main issue is that we keep getting D channel is DOWN.
If the T1 interface itself is up, the cable is correct. The 904 has two T1 interfaces and only T1 0/2 can be used for PRI. When connecting this to a PBX, a straight-through cable is most common. Any of the "e" series TA900 flavors have four T1 interfaces. T1 0/3 and/or T1 0/4 can be used for PRI, and these will generally need a T1 crossover (1,2 swapped with 5,4) to go to a PBX. If the T1 is up but the D-channel is down, it isn't the cable. Check timing source, switch type, that the PBX uses channel 24 for D-channel, user vs. network role configuration, etc. -- Jay Hennigan - CCIE #7880 - Network Engineering - j...@impulse.net Impulse Internet Service - http://www.impulse.net/ Your local telephone and internet company - 805 884-6323 - WB6RDV _______________________________________________ VoiceOps mailing list VoiceOps@voiceops.org https://puck.nether.net/mailman/listinfo/voiceops