Vonage Ports- Phone doesn't ring; goes straight to Voicemail

Posts: 83

All,

I've been having a reoccuring problem where my phone(s) will not ring when someone calls me but it goes straight to voicemail.

I emailed Vonage and they replied with the following (edited for brevity):

"The reason that your incoming calls are going to voicemail is because
it may be thinking that your service is down because the ATA is
unreachable. The may be a cause of a router configuration since I do
see that you have a Linksys router. What happens is that the Linksys
router tries to block certain ports which may be used by the ATA to
communicate out to the Internet. What we can do is set this in the
router to have the ports that the ATA uses opened all the time.....

EXT PORT
5060 to 5061 UDP (local IP of ATA) enabled
69 to 69 UDP (local IP of ATA) enabled
123 to 123 UDP (local IP of ATA) enabled
10000 to 20000 UDP (local IP of ATA) enabled"

This was extremely helpful as I was only forwarding UDP ports 5060 & 5061 to the ATA prior to this email.

Just thought I would share this info with the forum in case anyone else wants to know what ports need to be forwarded in the future.

Papu Papu

Posts: 24 · Posted: Tue May 13, 2003 7:35 pm Post subject:

is there a "trigger port" for the 10000-20000 UDP? or is it just the two ports, port 10,000 and then port 20,000 or is the the entire range between the two ports?

Posts: 83 · Posted: Wed May 14, 2003 11:30 am Post subject:

It's the entire range from 10000 to 20000.

I'm considering putting my ATA in one of my DMZs rather than forwarding all of these ports. If I do, I'll let you know who hacked into it. Smile

Papu Papu

Posts: 83 · Posted: Wed May 14, 2003 11:47 am Post subject:

Antipas,

From what I've seen (I use WallWatcher which I highly recommend and it's FREE):

5060-5061 UDP (SIP-TLS) is every 45 seconds or so, 69 UDP (TFTP) every couple of minutes, 123 UDP (Nettime) every 4 hours or so and 10000-20000 (random high ports) randomly - no fixed repeat time.

Hey, if it makes my phone work better, I'll do it. Like I said, I'll stick it in the DMZ and see what happens.

Papu Papu

Posts: 83 · Posted: Tue May 27, 2003 9:20 am Post subject: ATA-186 in the DMZ

An update from my last post:

I stuck the ATA in my DMZ instead of forwarding all those port ranges and here is what happened.

1> All the script kiddies in Internet Land started trying to hack into the ATA = Bad
2> Because of 1 above, my incoming traffic went up by a factor of 1000 (or so it seemed) = Bad
3> The phone rings but when you answer you can't hear who's calling - dead air = Bad
4> The phone rings and the caller can't hear you = Bad

So all in all, putting the ATA in the DMZ was a bad idea (but worth a try), forwarding the ports works but it does mean punching all those holes through your firewall.

I guess you can't win.

Papu Papu

Posts: 10 · Vonage Forum Associate Joined: Nov 17, 2004 Posts: 10

Wow, everyone, this is fascinating information. I have a question... How can I open my ports to keep my Vonage working? It cuts out several times a day, usually when I'm on the phone! My Vonage is connected to my Linksys, and I have a problem. I can't use port forwarding because my Vonage is 192.168.102.1, but my Linksys is 192.168.1.1, and I can only forward the last three digits of my IP address. I want my Vonage to live! Anyone have any advice? Can I put my Vonage in my DMZ somehow? I can't create a DMZ because the IP numbers can't match. Anyone have any help with this?

C5