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Joined: Jun 2005
Posts: 2,727 Likes: 7
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Joined: Jun 2005
Posts: 2,727 Likes: 7 |
If an AT&T Uverse is involved then my solution was to set the DMZ in the router to route to the phone. I had a problem with every U-verse modem when trying to use VIPedge service. Also same issue with DSL when using AT&T modem/router. had to put phone in DMZ or a second router.
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Joined: Feb 2010
Posts: 163
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Member
Joined: Feb 2010
Posts: 163 |
+1
"One last thought is that via EManager in the CIX40 go to IP-Telephony->IPT Data and select the CA extension. Try changing parameter 17 "IP NAT/No Peer to Peer to "Enable" (default is "Disabled". Sometimes a phone behind a NATted firewall will have this issue. From what I understand this setting causes the IP card to handle the voice packets as an intermediary devices vs an IP to IP peer connection. I would try this one first since it is very easy and can always be put back."
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