Not compatible with Vodafone Sure Signal box

[GoogleCodeExporter]

What steps will reproduce the problem?
1.Connect a Vodafone Sure Signal box
2.
3.

What is the expected output?
Connection to the Vodafone network, 3G Signal, able to make phone calls longer 
than 30 seconds
What do you see instead?
Connection to the Vodafone network, 3G Signal, call cuts off after 30 seconds

What version of the product are you using?
V3 Plug type though calls also cut off with V2
On what operating system?
N/A

Please describe the problem as detailed as it's possible.
If you have connection problem, then syslog file is required. (please do
attach it as a file)
Note that if there will be a poor problem description the issue status will
be changed to 'Invalid'!
Vodafone Sure Signal is a 3G femto cell for delivering 3G phone signal. It 
connects to an Ethernet connection at 100Mb and creats an IPSec tunnel into the 
Vodafone network. I use an IPSec tunnel for my work and that is fine.
Calls cut off (for no reason that I can see) after around 30 seconds
I have used a second router (BTHH3) on the same broadband link and that works 
fine

Original issue reported on code.google.com by John.Fan...@gmail.com on 20 Dec 2012 at 3:39

[GoogleCodeExporter]

Hi John. I too am having problems getting my EE Signal Box to work. Have you 
found a resolution to this?

Original comment by rca...@gmail.com on 18 Jun 2013 at 6:40

[GoogleCodeExporter]

No, I never got it working. I use a BT Home Hub 3 to front my Internet 
connection to my Asus and connect my sure signal to that.

Original comment by John.Fan...@gmail.com on 18 Jun 2013 at 6:49

[GoogleCodeExporter]

Thanks for your reply. Alas on Plusnet so just the crappy white BT Openworld 
modem and use the n56u as the router. EE claim I need to have an IPSec tunnel 
switched on, but I can't find anything on this customised firmware to state 
that.

Original comment by rca...@gmail.com on 19 Jun 2013 at 10:10