Configuring a Dial Plan

For an office environment, the following plan requires a user to dial 8 as a prefix for local calls and 9 as a prefix for long distance. In either case, an “outside line” tone is played after the initial 8 or 9, and neither prefix is transmitted when initiating the call.

( <9,:> 1 xxx xxxxxxx <8,:1212> xxxxxxx )

The following allows only placing international calls (011 call), with an arbitrary number of digits past a required 5 digit minimum, and also allows calling an international call operator (00). In addition, it lengthens the default short interdigit timeout to 4 seconds.

S:4, ( 00 011 xxxxx x. )

The following allows only US-style 1 + area-code + local-number, but disallows area codes and local numbers starting with 0 or 1. It also allows 411, 911, and operator calls (0).

( 0 [49]11 1 [2-9]xx [2-9]xxxxxx )

The following allows US-style long distance, but blocks 9xx area codes:

( 1 [2-8]xx [2-9]xxxxxx )

The following allows arbitrary long distance dialing, but explicitly blocks the 947 area code.

( 1 947 xxxxxxx ! 1 xxx xxxxxxx )

The following implements a hot line phone, which automatically calls 1 212 5551234 after a delay of 0 seconds.

( S0 <:12125551234> )

The following provides a warm line to a local office operator (1000) after five seconds, unless a four-digit extension is dialed by the user.

( P5 <:1000> xxxx )

Dial Plan Timers

The dial plan functionality is regulated by the following configurable parameters:

Interdigit_Long_Timer (defaults to 10)

Interdigit_Short_Timer (defaults to 3)

Dial_Plan (1 and 2)

Interdigit Long Timer

The Interdigit_Long_Timer specifies the default maximum time (in seconds) allowed between dialed digits, when no candidate digit sequence is as yet complete. (See the discussion of the Dial_Plan parameters for an explanation of candidate digit sequences).

Interdigit Short Timer

The Interdigit_Short_Timer specifies the default maximum time (in seconds) allowed between dialed digits, when at least one candidate digit sequence is complete as dialed. (See the following discussion of Dial_Plan parameters for an explanation of candidate digit sequences).

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Linksys SPA942, SPA962, SPA932, SPA922 manual Dial Plan Timers