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Linksys SPA9x2 Administration Guide 185
Configuring a Dial Plan
Number Barring
A sequence can be barred (rejected) by placing a ! character at the end of the sequence.
Thus, “1900xxxxxxx!” automatically rejects all 900 area code numbers from being dialed.
Interdigit Timer Master Override
The long and short interdigit timers can be changed in the dial plan (affecting a specific line)
by preceding the entire plan with the following syntax:
• Long interdigit timer: L : delay-value
• Short interdigit timer: S : delay-value
Thus, “L:8,( . . . )” sets the interdigit long timeout to 8 seconds for the line associated with this
dial plan. And, “L:8,S:4,( . . . )” overrides both the long and the short time-out values.
Local Timer Overrides
The long and short timeout values can be changed for a particular sequence starting at a
particular point in the sequence. The syntax for long timer override is:
L delay-value<space>
Note the terminating space character. The specified delay-value is measured in seconds.
Similarly, to change the short timer override, use: S delay-value<space>.
Pause
A sequence may require an explicit pause of some duration before continuing to dial digits,
in order for the sequence to match. The syntax for this is similar to the timer override syntax:
P delay-value <space>
The delay-value is measured in seconds.
This syntax allows for the implementation of Hot-Line and Warm-Line services. To achieve
this, one sequence in the plan must start with a pause, with a 0 delay for a Hot Line, and a
non-zero delay for a Warm Line.
Implicit Sequences
The SPA9x2 phone implicitly appends the vertical code sequences entered in the web UI
Regional parameter settings to the end of the dial plan for both Line 1 and Line 2. Likewise,
if Enable_IP_Dialing is enabled, IP dialing is also accepted on the associated line.
Dial Plan Examples
The following dial plan accepts only US-style 1 + area-code + local-number, with no
restrictions on the area code and number:
( 1 xxx xxxxxxx )
The following also allows 7-digit US-style dialing, and automatically inserts a 1 + 212 (local
area code) in the transmitted number.
( 1 xxx xxxxxxx | <:1212> xxxxxxx )