Switching to VoIP

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The Asterisk CLI

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There’s also an incoming context that attempts to ring a certain phone with the s

extension and then transfers the call on the current channel to a voice mailbox if

nobody answers the phone.

To get a specific extension’s dial-plan only, run the

show dialplan CLI command

with an argument of

extension@context:

pbx*CLI> show dialplan 3102@default

[ Context 'default' created by 'pbx_config' ]

'3102' => 1. Dial(SIP/3102@10.1.1.102) [pbx_config]

2. Voicemail(u4101) [pbx_config]

In this case, only the extension definition for 3102 in the default context is shown.

Administering the Dial-Plan Using the CLI

Earlier, we covered the primary configuration file for the dial-plan: extensions.conf.

You can also alter the dial-plan using CLI commands. The difference between using

the CLI and using the configuration file is this: CLI dial-plan changes, such as addi-

tions and removals of extensions, occur immediately, whereas changes to extensions.

conf require a restart of Asterisk (or at least a config-reload), which introduces down-

time.

Consider the following CLI command:

pbx*CLI> add extension 120,1,Dial(SIP/[e-mail]:5060) into local

The command add extension is followed by the same definition string you would see

in an

exten directive in extensions.conf—that is, the extension ...