I was looking for things like "t-mobile @home sip" or "asterisk uma".
I noticed T-Mobile extended their @home service from mobile phones over IP to a include a land-line like phone over IP. So I was wondering if it was possible to connect to their service via SIP so I could redirect my nokia e-series phone through their service.
But alas, it appears they developed a UMA analogue telephone adapter.
UMA a different closed VoIP specification developed by mobile phone companies instead of the open standard SIP developed by the IETF. (Can you say vendor lock in?)
Also after looking at my bill TEXT MESSAGING is a (*#&$@(*#& scam, it should be avoided whenever possible. (I really need a better jabber client for my phone).