System information

box, like we’ve done for other portions of the dialplan. We’ll be building the dialplan

to match the time starts and stops described in Figure 10-1.

Figure 10-1. Time delayed dialing with local channels

First we need to call three Local channels, which will all execute different parts of the

dialplan. We do this with the Dial() application, like so:

[LocalSets]

exten => 107,1,Verbose(2,Dialing multiple locations with time delay)

; *** This all needs to be on a single line

same => n,Dial(Local/channel_1@TimeDelay&Local/channel_2@TimeDelay

&Local/channel_3@TimeDelay,40)

same => n,Hangup()

Now our Dial() application will dial three Local channels. The destinations will be the

channel_1, channel_2, and channel_3 extensions located within the TimeDelay dialplan

context. Remember that Local channels are a way of executing the dialplan from within

the Dial() application. Our master timeout for all the channels is 40 seconds, which

means any Local channel that does not have a shorter timeout configured will be hung

up if it does not answer the call within that period of time.

As promised, Table 10-1 illustrates the delay configurations.

Table 10-1. Delayed dialing using Local channels

Time period

(in seconds)

channel_1 channel_2 channel_3

0 Dial(SIP/

0000FFFF0001,20)

Wait(10) Wait(15)

10 Dial(DAHDI/

g0/14165551212)

15 Dial(SIP/MyITSP/

12565551212,15)

20 Hangup()

212 | Chapter 10: Deeper into the Dialplan