发现答案了

http://forums.logitech.com/t5/Logitech-Vid/DLink-DIR-615-and-SIP-and-VID/m-p/360050

与上一个firmware (3.01)相比, 3.10及以后的firmware在firewall项目下增加了4个选项. 如果采用default设置就会给SIP设备带来问题. 解决方法就是uncheck其中的sip box.

The D-Link 615 runs a so-called Application-layer Gateway (ALG) for SIP, which interferes with our SIP traffic and should be disabled:
- log into the admin page of your router
- select the 'Advanced' pane, and then 'Firewall Settings'
- scroll down, and *uncheck* SIP



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可能还是最终的解决 -Landsend- 给 Landsend 发送悄悄话 Landsend 的博客首页 (650 bytes) () 12/17/2009 postreply 10:37:17

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