On 4/17/12 11:46 AM, Joseph Mays wrote: > We're setting up an HDSL4 t1 across two copper pairs. This is the first time > I've ever turned up a T1 that was not telco provided. The smartjacks show the > T1 as up (and extremely good quality, actually, strong signal and not a > single bit error). On the CO side the T1 goes to a T3 multiplexer which is > plugged into a channelized T3 card in an AS5400. On the remote end the T1 is > plugged into T1 WIC in a 2600. > > Both ends show the T1 interface up, line protocol is down. Encapsulation is > PPP, but all I ever see are errors. I've confirmed the wiring and every other > aspect of the physical layer. > > Here is the show interface info from the AS5400 6 minutes after clearing > counters on the interface.
Clocking problems will usually come up but show slips. Things to check: Framing - B8ZS throughout (including the mux ports)? Linecode - ESF throughout? And a fat-finger that had us going for a while, staring at it wasn't immediately obvious... "timeslots 24" isn't the same as "timeslots 1-24". :-) -- 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 _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
