Alex Balashov <abalas...@evaristesys.com> writes: > My fundamental question is: is there any grammatically acceptable way to > have an Alert-Info header value consisting of no URI and just a > generic-param, e.g. > > Alert-Info: ;internal=xyz > Alert-Info: <>;internal=xyz
The URI is not optional and there is no "empty" URI. However, there is the technique used in RFC 7473: Alert-Info: <urn:alert:service:normal>;appearance=1 "urn:alert:service:normal" specifies no unusual processing of the call, so the recipient can safely assign no semantics to the URI itself. Dale _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
