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DIAL PLAN CONFIGURATION FILE

The dial plan configuration file defines rules for gathering digits when dialing a phone number and also defines

the mapping of the gathered digits to a specific target. A sample dial plan is shown in figure 2.18.

Note:

All tokens associated with SYSCONFIG and DIGITMAP must appear on separate single lines in the

actual configuration file.

Dial Plan Configuration File Tokens

The following tokens are used for configuring the dial plan configuration file.

The SYSCONFIG token defines timer configuration and termination digit parameters.

The DIALTIME token defines the total time in milliseconds allowed to enter the dialed digits before the phone

will play a re-order tone.

The FIRST_DIGIT_WAIT token defines the time in milliseconds the phone will wait after going off-hook to

enter the first digit before the a re-order tone is played.

The INTER_DIGIT_WAIT token defines the time in milliseconds the phone will wait after the first digit is

entered before a re-order tone is played or the number is dialed.

The TERMINATION_DIGIT token defines the termination digit to be entered if the maximum number of digits

have not yet been entered and the number is to be dialed before the INTER_DIGIT_WAIT timer is expired.

The DIGITMAP token defines the mapping of collected digits to an outbound SIP URI.

The MATCH token defines the digits which MUST be matched when the user begins entering digits for the

DIGITMAP rule to take effect.

The MIN_DIGITS token defines the minimum number of digits which MUST be entered once that match rule

has been invoked. This number must be greater than or equal to the number of digits in the MATCH string.

The MAX_DIGITS token defines the maximum number of digits which MAY be entered after the match rule

has been invoked. The completion of the number can be achieved when the maximum number of digits have

been entered or the TERMINATION_DIGIT is pressed. The MAX_DIGITS parameter MUST be greater than

or equal to the MIN_DIGITS parameter.

The STRIP_FIRST_DIGITS parameter defines the number of digits that will be stripped from the beginning

of the complete dial string before it is passed to the underlying stack to be dialed. For example, if the user

entered 1234 and STRIP_FIRST_DIGITS was set to 2, the string passed to the underlying stack for dialing

would be 34.

The ADD_PREFIX_AFTER_STRIP token defines a set of prefix characters that are to be applied to the

beginning of the dial string AFTER the STRIP_FIRST_DIGITS rule has been applied. Adding to the previous

example, if the ADD_PREFIX_AFTER_STRIP were set to "56" and the user entered 1234, the string passed to

the underlying stack would be 5634.

The DIAL_STRING token defines the address which will be dialed when a number satisfying the MATCH rule is

entered.

The characters "

" define a wild card, consisting of the digits in the number dialed. In the example shown

above, when any four-digit number that was dialed is entered, it is passed to the stack as "<four-digit

number>@sipgateway.com".

Note:

Although the wild card parameter is defined in the MATCH string and in the DIAL_STRING, it

assumes that the rules applied for STRIP_FIRST_DIGITS and ADD_PREFIX_AFTER_STRIP still take

effect before the entered number replaces the wild card in the DIAL_STRING.

<DIGITMAP MATCH="911" MIN_DIGITS="3" MAX_DIGITS="3" STRIP_FIRST_DIGITS="0" ADD_PREFIX_AFTER_STRIP=""

DIAL_STRING="+&@sipgateway.com"/>

<DIGITMAP MATCH="+&" MIN_DIGITS="4" MAX_DIGITS="4" STRIP_FIRST_DIGITS="0" ADD_PREFIX_AFTER_STRIP=""

DIAL_STRING="+&@sipproxy.com"/>

<DIGITMAP MATCH="9" MIN_DIGITS="8" MAX_DIGITS="43" STRIP_FIRST_DIGITS="1" ADD_PREFIX_AFTER_STRIP=""

DIAL_STRING="+&@sipgateway.com"/>

<DIGITMAP MATCH="0" MIN_DIGITS="1" MAX_DIGITS="1" STRIP_FIRST_DIGITS="0" ADD_PREFIX_AFTER_STRIP=""

DIAL_STRING="[email protected]"/>

</C1DIALPLAN>

FIGURE 2.18 Sample dial plan configuration file

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