I have Thomson TG587N Wireless-N ADSL2+ Router from o2 and I have a Siemens Gigaset C475 IP Phone connected to one of their Ethernet ports.
I have an account in voipcheap.com and I used to login in to my voip account without any problems with the old router which was an non N thomson router (I don't have the specs on that one). No config changes were made on the phone and now it fails to login into my voip account.
I've turned the firewall off and still no connection. I can make voip calls from my pc and my iphone connected to the router by wifi.
Thanks in advance.