Switching to VoIP

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The Asterisk CLI

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show keys

Displays RSA key information for peers with whom RSA keys are used in

authentication.

H.323 commands

H.323 media channels are supported by Asterisk but does not compile by default.

Installation instructions for H.323 support are found in /usr/src/asterisk/channels/

h323/README. Asterisk cannot act as an H.323 gatekeeper, only as a gateway. A

fully H.323 VoIP network would also need an H.323 gatekeeper, such as the excel-

lent GnuGK, which is covered in Chapter 7.

h.323 debug

Enable H.323 debugging if the H.323 module is installed.

h.323 gk cycle

Manually register with an external gatekeeper.

h.323 hangup

Manually hang up the specified call.

h.323 no debug

Disable H.323 debugging.

h.323 no trace

Disable H.323 stack tracing.

h.323 show codecs

Show available codecs.

h.323 trace

Enable H.323 stack tracing.

SIP commands

SIP support is built in to Asterisk via the chan_sip module, which comes with it.

Asterisk can act as a SIP proxy, a SIP registrar, and a SIP client. Named SIP call

routes, which are created in /etc/asterisk/sip.conf, are called SIP peers, and their desti-

nations can be SIP phones or other SIP servers. (Refer to “SIP Channels,” earlier in

this chapter.)

sip debug

Enables SIP debugging. Debug output goes to the console.

sip no debug

Disables SIP debugging.

sip ...