I had one with this problem although it was a TD 816. The surge protection was "chopping" the ring signal.
There was a constant very low current higher voltage AC on the line presumably induced from high tension power lines. This accompanied by the 48VDC battery was enough with the 100 volt 20 Hz ring signal to randomly/occasionally fire the gas tube protection. Although I had the local Telco out to the site many times, and even though I proved THEY had a problem, they did damn little to fix it. I finally just used a higher voltage gas tube in the protector. NOT the best solution as this compromises protection, but I had no choice. Listen to the CO line with your butt set in monitor while the line is ringing....if you hear a "clipped" ringing sound instead of the pure 20Hz sinusoidal ringing voltage, suspect a surge protection problem. This could be at the Telco protector too! Jim ----- Original Message ----- From: "Rob Harrison" <[EMAIL PROTECTED]> To: <kxt@kxthelp.com> Sent: Tuesday, April 03, 2007 9:03 AM Subject: KX-T: KXT-624 Stuttering/Clipped Ring Problem > Hello, > > We have a client with a Panasonic kxt-624 version 5 KSU which suffers from > intermittent ringing problems. Incoming calls always ring the phone > system, > but on a seemingly random basis the ringing is clipped, or unusually > short. > The client describes it as a stuttering sound at times, with a normal ring > sounding, then 1-3 clipped/short rings. We have tried having Verizon > technicians out on-site to troubleshoot the problem, but they can tell us > nothing conclusively. The problem occurs on all phones throughout the > system. > > We COMPLETELY REPLACED the kxt-624 KSU and re-programmed the new unit with > the same settings in regards to extension programming, enabling caller-ID, > etc. The problem persists, although the customer thinks that it has > happened > less frequently but is growing worse as the weeks pass. > > Has anyone had any problems like this? > > Any recommendations you can offer would be appreciated, > ** > Rob H. > _________________________________________________________________ > 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
