(xx.)
After the user dials one or more digits, the DMP returns the accumulated digits as a complete number
when the long interdigit timer expires.
Let's combine the last two maps:
(xx. | <1408>xxx xxxx)
After the user dials 1 or more digits but fewer than 7 digits, the DMP returns the accumulated digits as
a complete number when the (long) interdigit timer expires. As soon as 7 digits are entered, the DMP
would return 1408 followed by the accumulated 7-digit when the (short) interdigit expires. On the
eighth digit and beyond, however, the DMP considers the first rule only and returns the accumulated
digits as-is when the (long) interdigit timer expires.
Now add an S4 timer to the second rule:
(xx. | <1408>xxx xxxxS4)
In this case, the DMP behaves exactly the same as the last, except that the short interdigit timer the
DMP uses upon receiving the seventh digit is overridden by a 4-second timer; hence the user has as
long as 4 seconds instead of 2 to dial the eighth digit.
Forcing Interdigit Timeout With A Pound Key
When dialing, you can force an interdigit timeout with a # key instead of waiting for the DMP to
timeout its own long or short timer.
This is allowed as long as the # key does not match the current element of any PM rules. Otherwise
the # key is consumed by the DMP instead of triggering a timeout.
Consider the digit map (33xx.)
If the user enters 333#, the DMP return immediately with the number 333.
Now consider the digit map (33xx.|333#1234x.)
If the user enters 333#, the DMP won't return, but continues to wait for further input or for its interdigit
timer to expire. Note that the first rule “33xx.” is now in the MM state since the digit # does not match
“x”. You can continue to enter 1234#, or 1234 and wait for a long interdigit timeout for the DMP to
successfully return 333#1234.
Invoke Second Dial Tone in Digit Map
You can tell the device to start a tone after a certain pattern of digits have been dialed by specifying
the element {t=<tone>} within a digit map, where <tone> is a 1- to 3-letter name of the tone to
play.
The tone stops when the next digit is entered. For example:
(**1{t=di2}(Msp)|**8{t=od}(Mli))
tells the device to play Second Dial Tone when **1 is dialed, or play Outside Dial Tone when **8 is
dialed. Here is a full list of acceptable (case-insensitive) values of <tone>:
● bu = Busy Tone
● cf = Call Forwarded Dial Tone
Forcing Interdigit Timeout With A Pound Key
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