I used sip2sip.info to use as ISP provider but was unable to login. Does VoiceMac support sip2sip.info? If so, what should I put on the Registrar field? I see also on advanced section DTMF Tone as RFC 2833 and the e-mail I received from isp2isp.info says "There are multiple servers available in multiple locations. To locate them, the SIP device must always perform DNS lookups as defined in SIP standard RFC3263." Because the RFC doesn't mach will that be a problem?
