call quality issues with dlink router

Posts: 3 · New Forum Member Joined: Jan 26, 2006 Posts: 3

I'm really new to this so please be gentle. LOL I'll try to explain the best I can.

My phone sounds great about 75% of the time, the other times it suddlenly messes up and either I can't hear the person on the other line or they can't hear me. Sound is also garbled about 20% of the time. This happens off and on during phone calls where part of the call sounds great and then it messes up for a minute or two and then goes clear again. I think that makes sense. Here is some more information:

1. Your location : Kernersville, NC
2. Your ISP name and type (cable, DSL, wireless etc) Earthlink through Timewarner cable. cable obviously.
3. Upload and download speeds Not sure about upload/download but the modem is reporting 100.00 Mbps
4. Modem make and model Toshiba PCX2600
5. Type of Vonage adapter used ie RT31P2 or PAP2 - PAP2
6. Setup of Network Modem-->Router (Dlink DI614+) ---->router splits to Vonage Adapter and PCs
7. Issue you are experiencing ie dropped calls, choppy audio etc (see above)
8. DETAILED results from www.testyourvoip.com with a test call to Boston. http://www.testyourvoip.com/details.html?id=4H2T98

If anyone has any suggestions, I'd really appreciate it. Thanks!

Posts: 2257 · Posted: Thu Jan 26, 2006 11:38 am Post subject:

Your TESTYOURVOIP results are perfect. I mean, completely perfect. Almost lab-quality results. So your ISP is probably not your problem.

Is it possible that someone is doing large uploads or downloads from the connection when the problems occur? In that case, you'll need to work on QoS on your router.

http://vonage.nmhoy.net/qos.html is a tutorial I typed up that should help you get started.

Posts: 1179 · Member of the Week Joined: Feb 28, 2005 Posts: 1179

Got5,

I would suggest implementing port forwarding on your DI 614. See the help files on the Vonage website for instructions on what ports to forward. It might help.

Posts: 3 · New Forum Member Joined: Jan 26, 2006 Posts: 3

I'm trying to figure this out.... Thanks so much for helping.

This happens even when no one is on the pc, or when it is off. Sometimes someone is on the pc, but not always. So I don't think it is QoS.

I tried the port forwarding, not quite understanding. LOL My router asks for a IP address, what IP address? my computer's?

Thanks!

Posts: 24 · Vonage Forum Associate Joined: Nov 18, 2003 Posts: 24

Try disabling SPI(could be labeled as firewall) within your router. Sometimes SPI tends to think the data stream is a DOS attack and will drop packets to try to block it.

If your router has a DOS attack log, try turning it on and make a call. then when you have the issues, take a look at the log to see if anything shows.

My WRT54GX4 has a serious issue with this and I have to turn SPI off(few other routers I know of, have this issue too).

Posts: 1179 · Member of the Week Joined: Feb 28, 2005 Posts: 1179

Got5,

if you go to the DI614 web configuration page, you should be able to see the ip addresses of all the machines connected to it including the PAP2 and any of your computers. The IP address of your PAP2 is the ip address you need use for your port forwarding.

In your DI614 configuration page look for the DHCP Client table. That should tell you all the IP addresses of machines connected to your router. I'm sorry but you are going to have to look at your user's guide to figure this out. I don't have a DI614 router.

Posts: 476 · Posted: Thu Jan 26, 2006 2:37 pm Post subject:

I use a DI-614+ so the administration is probably similar. I didn't have to forward any ports, but if you still want to, here's what I'd recommend:

1) Go to your web administration page (probably http://192.168.1.1 if you haven't changed it from the default - but from your post it sounds like you've already gotten at least this far) and make sure you're on the "Home" tab.

2) Click on the "DHCP" button on the left side. You should see a list of your current Dynamic DHCP clients. Try to identify the PAP2 (hopefully it's obvious, I have no idea). In the section right above the Dynamic DHCP client list should be an area where you can assign a static IP to specific devices. I would recommend assigning the PAP2's current IP to it as a static IP so you can reliably forward to it. Make sure you click the radio button to "Enable" this static DHCP assignment.

3) After you've applied the above, go to the "Advanced" tab and click on the "Firewall" button on the left side. This is where you tell your router to forward certain ports to the IP you identified above. I believe Vonage recommends forwarding UDP (not TCP) ports 10000-20000 to the device, but like I said I didn't have to do that. You may want to, but again shouldn't have to, forward UDP ports 5060-5061 as well.

Posts: 3 · New Forum Member Joined: Jan 26, 2006 Posts: 3

Thanks so much, I finally got this fixed. Hopefully I will have no more problems. I'll update in the next couple of days to let you know if it's happened again.

Posts: 4777 · Vonage Forum **MVM** Joined: Aug 30, 2005 Posts: 4777

Which of the suggestions did the trick for you?