Graham, I don't know what the standards are over there, but we have had a few cases where some of the T1/ip pots boxes are substantially below the US 90v 20Hz ring "standard". Some pots ports are just at the threshold of the d1232 trip point. We have seen a line that will ring in the morning, but won't in the afternoon. The Ilec tests from the bench and says everything is fine. Their on-site tech can't change the box, but, on the side, tells me that low ring voltage is a problem with a list of different pbx systems. Of course, this is after he went thru a box of 4 port cards he had with him, to find one that all 4 ports had two-way audio, to replace our dead card :- 0 Sounds more and more like the 1980's PC business. "Here, try THIS motherboard."
-larry ps, if your 1232 co interface is completely floating (no ring to earth etc) you might try: 1. flip the pair. 2. put a 6-10vdc isolated power supply in series with the pair. if it starts working fine, there are issues with voltage levels. and the finger pointing is about to begin. 9/12/04 5:04:44 PM, Graham Barnett <[EMAIL PROTECTED]> wrote: >Hi, > >I spoke too soon about having a solution to connecting a BT Airway to a >KX-TD1232. > >I have to admit being at a complete loss. Sometimes with some cable >combinations I can get a couple of ports to ring but the same cables >will not work on other ports on the Airway [I dont have that problem >with my another exchange I am using to test it or with a POTS line]. I >have tried to work out empirically what the works and what does not but >cannot get to the bottom of it. I have considered earth problems and >have tried connection the earth from the KXTD1232 to the earth on the BT >Airway - this does not help. > >The only thing I have found that might have an impact is that the ring >voltage on the KXTD is only on the +ve and not the -ve line T/R. > _________________________________________________________________ KX-T Mailing list --- http://kxthelp.com/ Subscription changes: http://kxthelp.com/mailman/listinfo/kxt
