Hello Richard,
First, thank you for this brilliant SIP address redirection idea.
Ideally, SIP providers would offer SIP address mapping to clients who own domain names and DNS servers would offer redirection of SIP calls analogous to email redirection which many DNS servers already offer. Unfortunately, that's far from reality.
Do you mean that SIP clients not supporting SRV records and not supporting redirection are two different issues from a technical perspective? For example, a SIP client may not support SRV records but still support redirection instruction from SipCloak server (achieved using CNAME or A record)? Alternatively, a SIP client could support SRV records but not support automatic redirection instruction from SipCloak server or may require the caller to manually accept redirection?
Wouldn't pointing @ to SipCloak's IP also cause web traffic to one's naked domain to point to SipCloak's server, thereby conflicting with naked domain's website?
Are there any developments since your last post? Would there be a way to redirect calls that would be invisible to the caller's SIP client without SipCloak becoming a proxy and creating latency? Maybe using a call transfer method rather than redirect?
Guillaume
Victoria, Canada