[SR-Users] Are sip calls working OK?

Dear Friends, I started to use my sip account few monts ago sip:4095xx@iptel.org It was working OK, but at the end of March I realised that I could not get any calls in my account. I own also a sip account in callcentric and works OK. So my zoiper version seems nothing to do on it Have you changed the setup of the account (iptel)? I got a real US phone number in IPCall associated to my sip account. IPCall is giving up, so that is the reason why the calls made to my real phone numbers ar not being forwarded to my sip account. But I have no idea why my sip:4095xx@iptel.org is not working thanks in advance looking forward your kind answer jose