Preparing a KX-TD816 for use with a voice processor
NOTE: on this website, "voice processor,"
 voice processing system," and "VPS"
 mean the same thing.
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the world's best source of information on Panasonic KX-TVS voice processing systems

  • This page is for use with a Panasonic KX-TD816 phone system that has "DPITS" integration.
  • This page does not apply to older analog systems (KX-T30810, KX-T61610, KX-T123211D), or to the oldest versions of the KX-TD816 and KX-TD1232 digital systems, or to KX-TAW or KX-TDA systems.
  • If you want your high-tech voice processor to work like a fancy answering machine, CLICK.



  1. From a display phone connected to jack 1 (ext. 101), use program #117 to specify which jack(s) you're using for the voice processor. If you are unlikely to have more than two ports in the VPS, we recommend jack 8 for the KX-TD816. If you expect to have more than two ports, start at a lower numbered jack. Remember that with these systems, one jack will support two VPS ports, so jacks 7 and 8 can handle a four-port VPS.
  2. If you want phones to ring before the voice processor answers, use INTERCEPT ROUTING (programs #409 & 410) to send un-answered calls to the extension number that corresponds to that jack, such as extension 108 for jack 8. Unless you have a good reason not to, send all lines ("trunk groups") to the same jack. You can enter "star" to program all lines the same way, to save programming time. After you enter the extension, number, the phone system should change it to 165, the artificial extension number for the first port of the voice processor.
  3. Use INTERCEPT TIME (program #203) to select the number of rings before an un-answered call is sent to the voice processor. The minimum setting for program #203 is three rings, which will seem like four rings to the caller.
  4. If you want calls to be answered immediately by the voice processor, use DIL 1:1 (program #407 & 408). Direct the lines to the extension number for the voice processor (usually an artificial #165 in a KX-TD816 regardless of the jack specified in #117).

With Panasonic KX-TD phone systems, you use one phone cord for each two ports in the voice processor.
  • You can connect the VPS to any jack in your phone system, EXCEPT the lowest number jack.
  • One jack in your phone system and one phone cord will support two ports in the VPS (connect it to Port 1).
  • We recommend Jack 8 for KX-TD816. If you are going to have more than two ports in the voice processor, start with a lower numbered jack in the phone system.

You need to use a four-wire (two-pair) cord, because the outer pair of wires carries the vital data.


Connect your PC to the VPS using the AbleComm ProCable, or a serial cable and null modem adapter from RadioShack. Be sure to get a cable or adapter that has the right connector for your voice processor, which may be 9-pin or 25-pin. 

>>You CAN'T program your voice processor with a USB cable.<<


You're now ready to program your voice processor.


2004 AbleComm, Inc. All rights reserved. updated 3 OCT 04

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