Probably a circuit problem. Has anyone pointed the finger at SBC yet? There's a remote chance it is a problem with the slot or shelf that the offending card/circuit is using. Put the offending circuit into another card that is in a known good slot, in a known good cabinet.
On Fri, 07 May 2004 09:57:31 -0700, you wrote: >We upgraded from a KX-TD336 to a KX-TD500 a few months ago, and have had a >problem with hearing echos on some (10% or so), but not all phone calls since. > >We have (3) different T1's, all from different vendors, and the problem only >occurs on one of them. > >* We've replaced the T1 card in the 500 with another one. >* We've replaced the CSU unit for that T1 >* We've replaced the CAT5 cable from the wall jack to the CSU and from the CSU > to the T1 card >* We've replaced the pairs going from the punchdown block to the wall jack >* The carrier has done tests on the line and they say it tests clean. >* The phone system and the voice mail system are both grounded. > >We have not replaced the 25-pair cable from the MPOE to the punchdown block. > >Our phone vendor points the finger at the carrier, the carrier is pointing it at >the phone vendor, and this has been going on for a few months. > >Any suggestions? > > > > >_________________________________________________________________ >KX-T Mailing list --- http://kxthelp.com/ >Subscription changes: http://kxthelp.com/mailman/listinfo/kxt > _________________________________________________________________ KX-T Mailing list --- http://kxthelp.com/ Subscription changes: http://kxthelp.com/mailman/listinfo/kxt
