Comcast may be blocking my MagicJack ?

smaerd58 · Post by **smaerd58** » Sat Jun 05, 2010 11:13 am

I have noticed while upgrading my Wireless router to N that I am having some issues with my wired computer and sound quality of MagicJack. I had DSL for 3 years and no issues. Have had Comcast for 8 months now and have had sporadic issues. The latest I went from G to N router model Netgear WNR1000 and it has crushed my MagicJack. I have run various speed checkers and Voip checkers and they all tell me there is 20MS jitter and Voip will have problems which I do. Also slows my connection and web pages take longer to load? Voice quality seems to fade in and out. People on the other line begin saying can you here me and voice gets choppy. I disabled USB Power options and also installed a dedicated PCI USB HUB.No Small USB CORD installed.Panasonic DECT Phones. Last thing that seems to have helped was a disconnected Wireless Router and hardwired Modem only and problem went away. Has anyone had this problem or can you recommend a Wireless Router that is MJ friendly? Thanks,Rick

radicalrad · Post by **radicalrad** » Fri Aug 06, 2010 2:03 pm

I had the exact same problem. Tried multiple routers, and multiple firmware on these routers.

What I notice was the comcast is giving the modem different IP addresses when connected to the PC and to the Router. What I did that worked for me was clone the PC IP to the Modem. When this is done, comcast gives the same IP when either the PC or Router is connected to the modem AND MAGICJACK WORKS!!!

Hope this helps. MJ support was not able to figure this out. Their solution was to install HotSpot Shield.

smaerd58 · Post by **smaerd58** » Fri Aug 06, 2010 3:17 pm

Comcast has the settings blocked on the Modem but however they have the Netgear Router open for changes. I just don't know how to clone my IP Adress to the Router? Thanks

murphy · Post by **murphy** » Fri Aug 06, 2010 3:55 pm

Cloning is not necessary.
Comcast is not blocking MJ.
What is necessary is that EVERY time you change what is connected to the modem you MUST power cycle the modem. If it's a voice modem with a battery there is a reset button on the back since the battery prevents a power cycle.

radicalrad · Post by **radicalrad** » Fri Aug 06, 2010 4:03 pm

MJ LiveLook was on my machine for 3 days with no luck. They all eventually gave up an recommended installing HHS.

I tried different Routers
I tried forwarding ports
I tried putting the machine in the DMZ
I tried disabling Norton
I tried uninstalling Norton
I tried Linksys with Linksys Firmware
I tried Linksys with DD-WRT Firmware

...

mastdesi · Post by **mastdesi** » Fri Aug 06, 2010 10:43 pm

QOS is what you need.

Matt9876 · Post by **Matt9876** » Fri Aug 06, 2010 11:28 pm

Connect the MJ machine directly to the cable modem if everything works correctly for you than follow the directions in this thread.

http://www.phoneservicesupport.com/char ... t9128.html

After weeks of problems I got everything to work correctly via my Linksys router.

magicJack and magicJack Plus Support, Reviews, FAQs and Tricks

Comcast may be blocking my MagicJack ?

Comcast may be blocking my MagicJack ?

Comcast is not blocking, but...

Cloning is the only thing that worked for me.