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Vonage 1. San Jose
2. Comcast cable
3. 16Mb/s down, 2Mb/s up
4. Motorola SB 5120
5.
1. San Jose
2. Comcast cable
3. 16Mb/s down, 2Mb/s up
4. Motorola SB 5120
5. Motorola VT2442 abd VT2142
6. Modem -> Dell TrueMobile 2300 router -> Switch -> VT2442 (and other devices) -> Mac
7. I have an interesting issue that has numerous symptoms. First I noticed that people would call or I'd call out and there would be no audio going either direction. This is on my VT2442. The call would complete-according to the other side, but there was no voice traffic. Later I found that the router was hung up in some fashion. The Mac connected to it on the LAN side couldn't resolve any hosts (DNS) and it also was unable to connect to the admin page at 192.168.15.1. ssh and ping also failed. Resetting the modem by removing power would correct these issues for another 12-24 hours. Calls would work, but eventually the same thing would occur.
After a couple of calls to support, Vonage is sending me another modem. Here's where it gets interesting though. I happen to also have a VT2142 because I ordered another line and got it for the cost of shipping. I switched to it to avoid the problem for now. But guess what?! The same thing happened.
Now I believe this should never happen with reasonable settings on the modem, but I did set a few things on my network and I'm wondering whether they somehow confused the modem. Because I wanted access to the single Mac behind the Vonage device, I enabled DMZ for that device. This also required setting a static DHCP address for this MAC address in the Vonage device. This allowed me to get to the Mac via file sharing, ssh, screen sharing, etc. I'm wondering whether this setting may have confused the modem so for the moment, I've turned off DMZ.
So the other interesting aspect is that I had only the occasional glitch over many months until about a week ago when this started happening once a day (or every 12-24 hours). I didn't change anything before it happened, either.
Has anyone else seen this issue or have any good or bad experience with the DMZ feature? Is it possible that one of the other folks in my house could be doing something to trip up the VT2442/2142?
8. Ran the test from a computer on the same switch as the VT2142:
Speed test statistics
-
Download speed: 1058160 bps
Upload speed: 2900096 bps
Quality of service: 41 %
Download test type: socket
Upload test type: socket
Maximum download pause: 189 ms
Average download pause: 16 ms
Minimum round trip time to server: 93 ms
Average round trip time to server: 94 ms
Voip test statistics
-
Jitter: you -> server: 2.5 ms
Jitter: server -> you: 8.0 ms
Packet loss: you -> server: 0.0 %
Packet loss: server -> you: 2.1 %
Packet discards: 0.0 %
Packets out of order: 0.0 %
Number of supported Voip lines: 17
Estimated MOS score: 3.6
Thanks,
. John
Read The Full Thread: No sound and VT2442/2142 locks up
• When you switched the devices did you also switch the power supply?
• Not sure what is going on with your set up but this is what works for me:
Cable
• I was a little leery of putting the Vonage device in my main traffic path. I have
• For what it's worth, your measured download speed is a far cry from what you say
• The problem with that is that if you are running a VoIP test for QoS and such, the
• Well, it appears that swapping out the power supply stopped the lock-ups. I'm
duetjohn posted "1. San Jose
2. Comcast cable
3. 16Mb/s down, 2Mb/s up
4. Motorola SB 5120
5." on 02/29/2008 |
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