magicJack and MagicJack Plus Support, Reviews, FAQs and Hacks

gnat · MagicJack Newbie Joined: 13 May 2010 Posts: 4

Hello,

So after reading around a bunch I've got a nearly working setup however it isn't very reliable and I'm wondering about a few things.

I have a linksys router running the tomato firmware. I installed mjproxy on it and run it as seen in other threads. I use ekiga as a softphone and have it configured to use the proxy.

Once I see the 'Registered' message I can call my mj number and it rings, I can use the mic/speakers to talk etc... However after hmm maybe 5 minutes calls go directly to voicemail.

I am wondering if I need to set anything up firewall/connection tracking wise or if anyone knows why I am experiencing the above described symptoms... I am a pretty compentent linux/networking admin but don't know much about SIP/RTSP protocols and whatnot. In looking at the packet captures I saw a lot that made it look like a proxy is required (embedding the internal private 192.168.x.x addresses etc...)

Anyway - pointers or anything would be appreciated.

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mountaineer · magicJack Apprentice Joined: 10 May 2010 Posts: 11

I'm testing the Ekiga & mjproxy combo too, but so far I haven't run into that issue. I'll see if that happens here as well. See this link for a possible explanation:

http://tinyurl.com/2do7jye

Here's a snippet:

"I can make calls, but if I let Ekiga running after some time I can't receive any calls"

Why this ?

Ekiga registers with a service using UDP and the service expects to find Ekiga at the port it sent the registration. Well, in Linux with IP iptables, this port is only accessible for 180 seconds after the registration. After this time, the firewall will block the packets coming from the SIP service, as it considers the "session" to be over.

There are two ways of coping with that:

1. If you don't have control of your host, you can configure each account to refresh the registration every 180 seconds.

2. If you can control your host (root), you can set the UDP iptables timeout to one hour.

gnat · MagicJack Newbie Joined: 13 May 2010 Posts: 4

mountaineer · magicJack Apprentice Joined: 10 May 2010 Posts: 11

gnat,

I've just posted my results with Ekiga & MJ here:
http://www.magicjacksupport.com/magicjack-runs-natively-on-linux-t8566.html

good luck and keep us posted with your results

gnat · MagicJack Newbie Joined: 13 May 2010 Posts: 4

gnat · MagicJack Newbie Joined: 13 May 2010 Posts: 4

So I've tracerouted all the proxies to get the ones with the fewest hops to me. I'm now using seattle. It also seems to have the best ping response times. I'm not using QoS but I'm not sure how that would help. I don't hear an echo, they don't hear me echo, nor am I delayed when speaking... Any ideas? I may try using the MJ in a mac box I have locally and see if there is an echo... though my initial calls with the device no one mentioned it when testing.

mountaineer · magicJack Apprentice Joined: 10 May 2010 Posts: 11

You might fiddle with Ekiga's echo cancellation option. Edit --> Preferences --> Audio --> Codecs --> Echo Cancellation

So far, I haven't run into echo issues. Sound quality has been good. But I'm fairly close to the proxy, so I suppose that helps.