本帖最後由 bubblestar 於 2012-9-30 18:33 編輯
回復 114# 雯雯
請確定你在user.conf 裡的cmphone 設定中，qualify 一項要設定成 No (My post in #106 above). 因為qualify default = yes = 2 秒的話，可能在偏遠的地方或NAT 因不同的回應速度太慢下回應binding request，Asterisk 便會無法打出電話的。解決辦法一係加大qualify 參數，例如3000-5000 (3-5秒)，一係就qualify = No，索性不做binding request，我選擇後者，一直沒有問題。當然這是要因Provider 而定的。cmphone 便要這樣做了。
你在大陸這麼遠，更可能需要做此設定。
詳細解說: http://www.voip-info.org/wiki/view/Asterisk+sip+qualify
This feature may also be used to keep a UDP session open to a device that is located behind a network address translator (NAT). By sending the OPTIONS request, the UDP port binding in the NAT (on the outside address of the NAT/firewall device) is maintained by sending traffic through it. If the binding were to expire, there would be no way for Asterisk to initiate a call to the SIP device. This can be used in conjunction with the nat=yes setting. |
發表於 2012-9-30 17:56
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