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http://wiki.sipnet.ru/index.php/Пример_настроек_для_Asterisk_1.6
server# cat sip.conf
<code> [general] … disallow=all allow=alaw … [sipnet] type=peer secret=SIPPASSWORD defaultuser=SIPID fromuser=SIPID fromdomain=sipnet.ru host=sipnet.ru callbackextension=sipnet_0037235261
[sipnet] type=user insecure=invite context=incoming nat=no directmedia=no <code>