You should be able to ring against a dead short without having the KSU reboot. I have an older TA624 that I use a couple of the old Western Electric clunkers you are talking about without any problems. I have upgraded to the -5 firmware, but I had no problems as you describe with the previous firmware (I think it was a -3). Check the ringer equivalence sticker on the bottom / back of the phone. My W.E. Trimline shows a ringer equivalence of 1.0A. Make sure you only connect one pair to the phone. If you connect the second pair (power & digital data for a proprietary phone) perhaps your ring voltage is feeding back on this pair and causing problems. If all else fails you could open the phone and install a capacitor in series with the bell, this would lower the current the bell draws when it rings (try a .1ufd / 200v).
----- Original Message ----- From: "Russ Price" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Friday, August 26, 2005 10:34 PM Subject: KX-T: Early-model KX-TA624 - limited ring current for SLT? > I've just obtained an early-model KX-TA624 with a KX-T7130 and a few > 7030s, plus some goodies inside (caller ID card, OGM/FAX card, and > doorphone card). All of the ports work fine with the proprietary phones, > and with single-line phones that have electronic ringers. So far, so good. > > However, I tried plugging in an old-school Western Electric Trimline > (electromechanical ringer, LED-lit keypad, no incandescent lights), and > if I try to call into it, the entire system will reset after it rings a > random number of times. The phone does not have A/A1 contacts, so I can > rule that out as a potential cause, and the LED keypad doesn't need a > transformer on the A/A1 leads the way the incandescent ones did. > > The KX-TA624-5 at work has no such problem with old-style ringers. Did > Panasonic juice up the ring current on the later model units? I'm > leaning towards pulling out the OGM/FAX and doorphone cards and finding > a -5 system, since I want to be able to use some vintage phones on this > system. > > Russ > > _________________________________________________________________ > 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
