Thank you for all the reply's. I had lingo until last September no matter what i did and what lingo did my 942/211 would not work.
I think i might give vonage a try and see what happens.
I ave Vonage working with 301, 311 and 501. It's not perfect, looking at the outgoing call log the receivers have several attempts to call home before they are successful but they get there in the end.