Paul, It's definitely the serial port. I've got a dedicated VT320 terminal just for the voicemail programming. I've swapped it out and the cables, rebooted everything, tried a PC terminal emulator, rebooted everything, set rotary switch to 1 (to reset to 9600 8,N,1), rebooted everything, etc. Everything worked perfectly the day before. I'm the only one with access to the room, so I know nothing was mucked with. It's not looking too good. What really confuses me is that it seems like a power spike might have done it, but everything, including the phone lines are going through surge suppressors and/or UPS surge suppressors. Oh well.
My original message was really just wondering if there was a weakness that was easily fixed in the RS232 interface -- like a capacitor that always blows, etc. Thanks for the suggestions. -Brian ----- Original Message ----- From: "Paul H. Gusciora" <[EMAIL PROTECTED]> To: "KX-T Help" <[EMAIL PROTECTED]>; "Brian Mitchell" <[EMAIL PROTECTED]> Sent: Tuesday, August 27, 2002 1:31 AM Subject: Re: TVS200 RS232 port dead > Brian: > > It is unlikely that the serial port is bad. The EIA RS-232 standard > requires that any pin can be connected to any pin for any length of > time with no damage. It is VERY likely that the RS-232 port has > somehow been configured in a strange way, or that the cable has > caused a short or open. > > Things that I would try (not necessarily in order) include: > > 0. Make certain that your TEFT (terminal emulation and file > transfer) program is Online. Some programs can be set Offline, which > means that they ignore data from the serial port and do not send > key-presses to the serial port. Registry corruption or shared DLL > replacement can cause similar behavior. Did you install software on > the PC since the last time it worked? With the current state of > Windows software, you might have to substitute another PC to diagnose > the problem, and might have to reinstall windows to fix it. > > 1. type ^Q (control-Q) to cancel any ^S (control-S) in effect > > 2. Try a different cable. Make certain that none of the pins on > the DB-25 are shorted to another by a fine wire. > > 3. Check to see if hardware handshaking is enabled in the > KX-TVS. Many breakout boxes will let you break and force lines. An > inexpensive breakout box ($20 from the shack) will let you monitor > TD, RD, RTS, CTS, DCD... as the VM starts up. You should see the > LED's change color as the KX-TVS software takes control of the serial > port. > > 4. If you have access to an oscilloscope, I would suggest > connecting between the serial line from the KX-TVS and ground. You > might be able to discern the serial bit rate in use. > > 5. Make certain that you are logged out of the system-manager > and message-manager VMB's (voice mail-boxes). I do not think that the > VM serial port will behave properly if someone is logged in to one of > these. Since there are no timers on the KX-TVS, someone might have > logged in to one of these mailboxes, then parked or placed on hold in > the phone system. Hard to diagnose, but easy to fix: cycle the power > on the KX-TD and KX-TVS, and allow the KX-TD to start first. > > 6. Check the computer serial communication configuration. > Generally you want 8 bits, No parity, 1 start bit, 1 stop bit, and > hardware handshaking. If you enable 8 Bits + parity your PC will > generate 9 Bits -- too many! (although it might work with some serial > configurations on the KX-TD or KX-TVS) > > I am able to communicate from a Macintosh G4 with USB serial port via > CAT-5 cable to the closet containing the KX-TVS, and the KX-TD1232, > so you should be able to make things work too. > > Good luck. > > Paul Gusciora > San Rafael, CA > > ==== > From: "Brian Mitchell" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Subject: KX-T: TVS200 RS232 port dead > Sender: [EMAIL PROTECTED] > Date: Mon, 26 Aug 2002 08:08:59 -0400 > > It appears our TVS200 RS-232 port has died. The voicemail is working > fine, otherwise. I just can't get in to program new boxes. > > Are there any known tricks or failure points that are fixable > on-site, or is my only choice to swap it out for a repair at > Panasonic? > > I did try setting the dial to 1 to reset the baud rate to 9600. No luck. > > Thanks for any assistance. > > Brian Mitchell > _________________________________________________________________ KX-T Mailing list --- http://kxthelp.com/ Subscription changes: http://kxthelp.com/mailman/listinfo/kxt
