Hey, Yes. The entire server room's power input is through a dedicated 10 KV UPS from DB UPS systems (http://www.dbups.com/public/products/upssystems/lnseries.asp?Product=LN).
Were your problems same as the ones iam facing ? Regards Dushyanth > Is the system plugged into a UPS? > I've had some VERY strange problems when I tried to run TD boxes on > certain UPS's. > Good luck! > Jim > ----- Original Message ----- From: "Dushyanth Harinath" > <[EMAIL PROTECTED]> > To: "KX-TD500 Help" <kxt@kxthelp.com> > Sent: Friday, December 02, 2005 4:37 AM > Subject: KX-T: KX-TD500 ringing problem > > >> Hello all, >> >> We have a KX-TD500 with a basic shelf + expansion shelf. We have about >> 20 ESLC + 2 LCOT + 1 DHLC + 1 PRI + 1 CPU + 1 TSW cards configured on >> the TD500. >> >> For the past two weeks we have been facing some weird issues with the >> expansion shelf. >> >> 1) At first on all the extensions configured on the expansion shelf, we >> couldnt hear the phone ringing properly on incoming calls i,e the ring >> was all broken & erratic. This problem later matured and there was no >> ring at all on incoming calls. Panasonic engineers who worked on this >> issue said there was some problem in the ringing circuit of the power >> supply. So we shut down the expansion shelf and sent the power supply to >> the service center for repair and later replaced with a new one. >> >> 2) During this we had to get some extensions on the expansion shelf >> configured on the lower shelf because the expansion shelf extensions are >> used for some of our critical departments. So we removed the amphenol >> connectors connected to the expansion shelf and connected them to the >> cards on lower shelf and reconfigured the needed extensions on them. >> >> This worked for a day and later the basic shelf power supply stopped >> working. The power supply's LED started ticking (tick..tick..tick..) >> everytime the TD500 was powered on and the system failed to start. >> >> So, again this power supply was replaced with a different one by the >> panasonic engineers. >> >> 3) Now, we have both the power supplys of TD500 functioning and the >> system starts up properly with all extensions working. But after 6 to 8 >> hrs after powering on the system we are observing the same ringing >> behaviour on all the extensions of the expansion shelf. >> >> 4) Shutting down the system and powering it on after a few minutes >> solves the problem for a while i,e all extensions/phones configured on >> the expansion shelf ring properly. >> >> 5) Nobody seems to have a clue on what the exact cause is and is turning >> out to be a wild goose chase. Below are the some of the guesses that we >> have heard from the panasonic engineers. >> >> a) The power supply on the expansion shelf is not able to handle the >> load of all cards. >> >> b) There is some magnetic induction from the field side i,e from the >> extensions side to where the phones are connected to. Could be due to >> power wirings and telephone wiring for the office going through the same >> conduit. We have verified the same and both the power wirings and >> telephone wirings use different conduits. >> >> c) Could be a short-circuit due to one of the ESLC or LCOT cards >> connected to the expansion shelf. We still need to verify this by >> systematically testing extensions on each card the next time the problem >> occurs. >> >> d) Could be a connection problem from the basic shelf to the upper shelf. >> >> e) Could be a problem with the expansion shelf mother board. The mother >> board was completely cleaned and serviced today. We havent found a way >> to verify this part yet. >> >> f) Word from the panasonic service center is that some transistors on >> both the power supplys (the faulty ones which were later replaced) >> failed and they suggested b), c) & e) could cause this problem. >> >> Iam no telecommunications expert and at a loss here in identifying the >> cause of this problem. Has anyone else using KX-TD500 faced similair >> issues ? >> >> All suggestions are welcome and iam all for trying those out. >> >> TIA >> Dushyanth >> >> >> _________________________________________________________________ >> 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
