Asterisk G.723 pass-thru

How to use the G.723.1 codec in pass-thru mode in Asterisk

G.723.1 can only be used in pass-thru mode.

This means that there can be no access to Asterisk cmd VoiceMail, etc

In order to ensure that it is used in this mode, pay attention to the configuration:
no T,t or monitor in the dialplan, application Asterisk cmd Dial

Configuration for the SIP channel

sip.conf needs the following:

[general]
disallow=all
allow=G723.1
allow=ulaw
allow=alaw

See also:

• Asterisk codecs
• ITU G.723.1

• Asterisk | FAQ | Tips & Tricks