Unit installation

4-16

DTMF Interdigit Timers or Auto-execution timers (See Command 078):

These timers are used to get rid of stray DTMF digits after several second without entering any

more digits. For example, if you key and press a DTMF digit, then start talking, this timer will

throw that digit away after a default of 5 seconds. That way if, after you talk a while, you try to

enter a command, the digit you entered 30 seconds ago won't mess it up. Of course if you unkeyed

during that time, all of the digits would be either executed or discarded anyway. This also reduces

problems caused by voice falsing the DTMF decoder, by discarding the incorrectly received digits if

no more digits are received during the length of this timer. This timer starts running when the

DTMF digit is released, so you can hold a DTMF digit as long as you like without it being

discarded.

Timer Number Description Defaults

164 DTMF Interdigit Timer, Receiver 1 5 sec. (005)

165 DTMF Interdigit Timer, Receiver 2 "

166 DTMF Interdigit Timer, Receiver 3 "

167 DTMF Interdigit Timer, Receiver 4 "

168 DTMF Interdigit Timer, Receiver 5 "

169 DTMF Interdigit Timer, Receiver 6 "

170 DTMF Interdigit Timer, Receiver 7 "

171 DTMF Interdigit Timer, Receiver 8 "

Reverse Patch Ring Timer:

This timer sets the maximum time between rings allowed for the reverse patch to work. If this

timer expires between rings, the ring count starts over. This would keep the reverse patch from

ever answering the phone.

- This timer is programmed in 1 second increments from 001-9999

Timer Number Description Defaults

172 Reverse Patch Ring Timer 10 sec. (010)