Hi Varadhan, As per RFC-3261, hostname should be like:
hostname = *( domainlabel "." ) toplabel [ "." ] domainlabel = alphanum / alphanum *( alphanum / "-" ) alphanum toplabel = ALPHA / ALPHA *( alphanum / "-" ) alphanum It means SIP Domain name should consists of labels which are delimited by dots. In a practical environment, there should be the hostname in this format otherwise it will be of no use and will be rejected by SIP Server. On Tue, Jan 3, 2017 at 1:08 AM, Varadhan Work <varadhan.w...@gmail.com> wrote: > Hello, > > Is it legal to have SIP domain name in SIP packet with only one single part > without top level domain name ? > > In general domain name syntax > > *A domain name consists of one or more parts, technically called labels, > that are conventionally concatenated, and delimited by dots, such > as example.com <https://en.wikipedia.org/wiki/Example.com>.* > Which means, can it be specified with one part in SIP ? > > Thanks & Regards, > Varadhan > _______________________________________________ > Sip-implementors mailing list > Sip-implementors@lists.cs.columbia.edu > https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors