Configurer le codec G711 sous asterisk

Bonjours,
je suis un nouveau utilisateur de asterisk, je veux savoir comment configurer ou utiliser le codeur G.711 sous asterisk.
merci

If you have compiled Asterisk and installed it, the alaw/ulaw/g711 codec is available to you. Depending on which channel you use, SIP/IAX2/H323, you simply set the following in the [general] setting of your sip.conf/iax.conf/etc:

[general]
disallow=all
allow=alaw (or ulaw for North America, generally)