Corporate Network

[rkuzemch]

Has anyone had any success using MagicJack on their corporate network? I get a Cannot Connect to Internet Error 3) when trying to use MagicJack while on my corporate newtwork or connected through our Cisco VPN.

Any help will be appreciated

[Stewart]

From O*, fat chance.

From home with your VPN up, maybe. See this thread: http://www.phoneservicesupport.com/magi ... t1566.html .

[mrjlturner]

I haven't tested mine yet, but I heard that it attempts to use ports 80 and / or 443 for authentication and 5060 for the voice. If you are in a corporate environment, you are then most likely going through a proxy. I doubt that MJ looks to IE for the proxy settings...if it does then it may work. I will test this for you this week sometime. Port 5060 is a standard SIP port.

Stay tuned

jt

Has anyone had any success using MagicJack on their corporate network? I get a Cannot Connect to Internet Error 3) when trying to use MagicJack while on my corporate newtwork or

connected through our Cisco VPN.

Any help will be appreciated

[Stewart]

I haven't tested mine yet, but I heard that it attempts to use ports 80 and / or 443 for authentication and 5060 for the voice. If you are in a corporate environment, you are then most likely going through a proxy. I doubt that MJ looks to IE for the proxy settings...if it does then it may work. I will test this for you this week sometime. Port 5060 is a standard SIP port.

MJ uses WinINet, so it does honor any proxy settings in IE. However, the SIP connections are from source port 5060 to destination port 5070, so if a SIP ALG is needed and it only listens on 5060, then you may be out of luck.

If MJ won't work, Yahoo! Voice is likely to be ok (it can fall back to TCP on port 443), and Skype is king when it comes to traversing firewalls.

[tonytony24]

Thanks for the info. Is there a command to find out what port is MagicJack using? I believe its nbtstat right? I heard Skype has been blocked from many corporate networks because it tries to open ports within networks and its considered as a P2P software. Didn't get confirmation on that.

If I am understanding correctly, does this mean MJ operate like Skype where it tries to swiss cheese firewalls?

[Stewart]

MJ does nothing special about firewalls. It uses outbound TCP ports 80 (HTTP) and 443 (HTTPS) for registration and provisioning, connects to UDP port 5070 for SIP, and uses dynamically allocated UDP ports for the actual voice packets (in the same way as any standard SIP application).

MJ will work behind a 'dumb' NAT, because the server sends the RTP (voice) packets back to whatever IP and port they appear to come from.

[new yorker]

As you can see, I'm a newbie and not very geeky. But I do use my MJ at work through a network. Our firm is networked throughout the US to our various offices. I think (but don't quote me) we use a Cisco VPN. In any case, my MJ loaded itself as virtual drives: E and U (this one says MJ Vista, although we are not running Vista).

Hope this little bit helps.