Switching to VoIP

This is the Title of the Book, eMatter Edition

Copyright © 2007 O’Reilly & Associates, Inc. All rights reserved.

394

|

Chapter 17: Asterisk Reference

In this example, a credit card number is pulled from the Asterisk database. If its

length is 16, the system plays a thank you message. Otherwise, it plays an invalid

message and changes contexts.

Concatenating strings

As in Perl and PHP quoted string expressions, multiple strings can be concatenated

simply by putting them inline:

exten => 1,1,SetVar(wholename=DestinysEnd)

exten => 1,2,SetVar(firstword=${wholename:1:8})

exten => 1,3,SetCIDName("Gilneas ${firstword}")

; Caller ID Name is now "Gilneas Destiny"

exten => 1,4,SetCIDName("Gilneas${firstword}")

; Caller ID Name is now "GilneasDestiny"

Dial-Plan Command Reference

Each extension you define in the dial-plan can have one of many commands. These

commands are, as pointed out earlier, executed in order of their priority. Some of the

commands are dependent upon one another. Here is a list of the most commonly

used commands.

AbsoluteTimeout

AbsoluteTimeout(seconds)

Sets absolute maximum time of call, in seconds. Once this time elapses, the call will

be disconnected or handled by the

t special extension, if one is defined in extensions.

conf. Could be useful for calling card applications.

AddQueueMember

AddQueueMember(queue|[channel])

Adds the current channel as a member to a call queue as configured in /etc/asterisk/ ...