標題: Port forward problem behind two routers [打印本頁] 作者: Qnewbie 時間: 2010-10-17 16:21 標題: Port forward problem behind two routers
My case is port forwarding problem of an ATA (SPA1001) with 6+1+2 scheme. The ATA is behind two routers.
The first router is combo of modem and router(Zyxel), the second one is Dlink N router. I put the SPA1001 at the DMZ for Dlink. I don't have the access to the first router.
I got it work once. Currently I can access the admin web of SAP1001 from outside and the sip signal goes thru both routers and I get ring tone at the other end. However, the RTP stream is blocked. Audio problem again.作者: 角色 時間: 2010-10-17 22:21
Have you tried any STUN server?
YH作者: Qnewbie 時間: 2010-10-18 05:06
Do.
The 6+1+2 scheme includes the stun server. Stun server is enabled.作者: 角色 時間: 2010-10-18 11:08
In order to isolate the problem, how about the result with the Zyxel router + SPA1001? Does it work?作者: Qnewbie 時間: 2010-11-9 05:58
本帖最後由 Qnewbie 於 2010-11-9 06:02 編輯
Provisional solution is:
1. First modem-router combo acts as modem bridge. It provides the room for the second router as "first" router.
2. The second router turns SIP application-level-gateway(which makes thing worse than help!) off and puts the SPA1001(static ip within LAN) in the DMZ.
