[Users] Support for SIP short headers

Hello, Are the short notation of the SIP header names supported by the Proxy functions that check various headers? Example: INVITE sip:+87810223334019@sip2sip.info SIP/2.0 v: SIP/2.0/UDP 192.168.0.8:5060;branch=z9hG4bK-10597899239c90aff5153ebe96e42c91;rport f: "Blast" <sip:2233344162@sip2sip.info>;tag=19660 t: <sip:+87810223334019@sip2sip.info> i: 1cc8c9c2(a)pbxnsip.com CSeq: 1 INVITE Max-Forwards: 69 m: <sip:2233344162@192.168.0.8:5060;transport=udp> Supported: 100rel, replaces Allow-Events: refer Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, PRACK, INFO Accept: application/sdp User-Agent: pbxnsip-PBX/0.95 c: application/sdp l: 268 Regards, Adrian