Wireshark · Display Filter Reference: Session Initiation Protocol

Field name	Description	Type	Versions
raw_sip.line	Raw SIP Line	Character string	1.0.0 to 1.0.16
sip.Accept	Accept	Character string	1.0.0 to 4.4.2
sip.Accept-Contact	Accept-Contact	Character string	1.0.0 to 4.4.2
sip.Accept-Encoding	Accept-Encoding	Character string	1.0.0 to 4.4.2
sip.Accept-Language	Accept-Language	Character string	1.0.0 to 4.4.2
sip.Accept-Resource-Priority	Accept-Resource-Priority	Character string	1.0.0 to 4.4.2
sip.Additional-Identity	Additional-Identity	Character string	4.0.0 to 4.4.2
sip.Alert-Info	Alert-Info	Character string	1.0.0 to 4.4.2
sip.Allow	Allow	Character string	1.0.0 to 4.4.2
sip.Allow-Events	Allow-Events	Character string	1.0.0 to 4.4.2
sip.Answer-Mode	Answer-Mode	Character string	1.2.0 to 4.4.2
sip.Attestation-Info	Attestation-Info	Character string	4.0.0 to 4.4.2
sip.auth	Authentication	Character string	1.0.0 to 4.4.2
sip.auth.algorithm	Algorithm	Character string	1.0.0 to 4.4.2
sip.auth.auts	Authentication Token	Character string	1.0.0 to 4.4.2
sip.auth.ck	Cyphering Key	Character string	1.0.0 to 4.4.2
sip.auth.cnonce	CNonce Value	Character string	1.0.0 to 4.4.2
sip.auth.digest.response	Digest Authentication Response	Character string	1.0.0 to 4.4.2
sip.auth.domain	Authentication Domain	Character string	1.0.0 to 4.4.2
sip.auth.ik	Integrity Key	Character string	1.0.0 to 4.4.2
sip.auth.nc	Nonce Count	Character string	1.0.0 to 4.4.2
sip.auth.nextnonce	Next Nonce	Character string	1.0.0 to 4.4.2
sip.auth.nonce	Nonce Value	Character string	1.0.0 to 4.4.2
sip.auth.opaque	Opaque Value	Character string	1.0.0 to 4.4.2
sip.auth.qop	QOP	Character string	1.0.0 to 4.4.2
sip.auth.realm	Realm	Character string	1.0.0 to 4.4.2
sip.auth.rspauth	Response auth	Character string	1.0.0 to 4.4.2
sip.auth.scheme	Authentication Scheme	Character string	1.0.0 to 4.4.2
sip.auth.stale	Stale Flag	Character string	1.0.0 to 4.4.2
sip.auth.uri	Authentication URI	Character string	1.0.0 to 4.4.2
sip.auth.username	Username	Character string	1.0.0 to 4.4.2
sip.Authentication-Info	Authentication-Info	Character string	1.0.0 to 4.4.2
sip.Authorization	Authorization	Character string	1.0.0 to 4.4.2
sip.authorization.invalid	Invalid authorization response for known credentials	Label	2.4.0 to 4.4.2
sip.Call-ID	Call-ID	Character string	1.0.0 to 4.4.2
sip.Call-ID.invalid	Call ID is mandatory	Label	4.2.0 to 4.4.2
sip.Call-Info	Call-Info	Character string	1.0.0 to 4.4.2
sip.call_id_generated	Generated Call-ID	Character string	3.0.0 to 4.4.2
sip.Cellular-Network-Info	Cellular-Network-Info	Character string	4.0.0 to 4.4.2
sip.Contact	Contact	Character string	1.0.0 to 4.4.2
sip.contact.addr	SIP contact address	Character string	1.0.0 to 1.2.18
sip.contact.binding	Contact Binding	Character string	1.0.0 to 1.2.18
sip.contact.display.info	SIP C-URI display info	Character string	3.4.0 to 4.4.2
sip.contact.host	Contact URI Host Part	Character string	1.4.0 to 4.4.2
sip.contact.param	Contact URI parameter	Character string	1.8.0 to 4.4.2
sip.contact.parameter	Contact parameter	Character string	1.4.0 to 4.4.2
sip.contact.port	Contact URI Host Port	Character string	1.4.0 to 4.4.2
sip.contact.uri	Contact URI	Character string	1.4.0 to 4.4.2
sip.contact.user	Contact URI User Part	Character string	1.4.0 to 4.4.2
sip.Content-Disposition	Content-Disposition	Character string	1.0.0 to 4.4.2
sip.Content-Encoding	Content-Encoding	Character string	1.0.0 to 4.4.2
sip.Content-Language	Content-Language	Character string	1.0.0 to 4.4.2
sip.Content-Length	Content-Length	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sip.Content-Type	Content-Type	Character string	1.0.0 to 4.4.2
sip.content_length.invalid	Invalid content_length	Label	2.4.0 to 4.4.2
sip.continuation	Continuation data	Byte sequence	2.0.0 to 4.4.2
sip.CSeq	CSeq	Character string	1.0.0 to 4.4.2
sip.CSeq.method	Method	Character string	1.0.0 to 4.4.2
sip.CSeq.seq	Sequence Number	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sip.Date	Date	Character string	1.0.0 to 4.4.2
sip.display.info	SIP Display info	Character string	1.0.0 to 4.4.2
sip.Diversion	Diversion	Character string	1.6.0 to 4.4.2
sip.Error-Info	Error-Info	Character string	1.0.0 to 4.4.2
sip.ETag	ETag	Character string	1.0.0 to 4.4.2
sip.Event	Event	Character string	1.0.0 to 4.4.2
sip.Expires	Expires	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sip.Feature-Caps	Feature-Caps	Character string	3.4.0 to 4.4.2
sip.feature_cap	Feature Cap	Character string	2.4.0 to 4.4.2
sip.feature_caps	Feature-Caps	Character string	1.10.0 to 3.2.18
sip.Flow-Timer	Flow-Timer	Character string	1.6.0 to 4.4.2
sip.From	From	Character string	1.0.0 to 4.4.2
sip.from.addr	SIP from address	Character string	1.0.0 to 4.4.2
sip.from.display.info	SIP from display info	Character string	3.4.0 to 4.4.2
sip.from.host	SIP from address Host Part	Character string	1.2.0 to 4.4.2
sip.from.param	SIP From URI parameter	Character string	1.8.0 to 4.4.2
sip.from.port	SIP from address Host Port	Character string	1.2.0 to 4.4.2
sip.from.tag	SIP from tag	Character string	1.8.0 to 4.4.2
sip.from.user	SIP from address User Part	Character string	1.2.0 to 4.4.2
sip.Geolocation	Geolocation	Character string	1.10.0 to 4.4.2
sip.Geolocation-Error	Geolocation-Error	Character string	3.4.0 to 4.4.2
sip.Geolocation-Routing	Geolocation-Routing	Character string	3.4.0 to 4.4.2
sip.Geolocation_Routing	Geolocation-Routing	Character string	1.10.0 to 3.2.18
sip.header_no_colon	Header has no colon after the name	Label	2.0.0 to 4.4.2
sip.header_not_terminated	Header not terminated by empty line (CRLF)	Label	1.12.0 to 4.4.2
sip.History-Info	History-Info	Character string	1.0.0 to 4.4.2
sip.icid_gen_addr	icid-gen-addr	Character string	2.6.0 to 4.4.2
sip.icid_value	icid-value	Character string	2.6.0 to 4.4.2
sip.Identity	Identity	Character string	1.0.0 to 4.4.2
sip.Identity-info	Identity-info	Character string	1.0.0 to 4.4.2
sip.If_Match	If_Match	Character string	1.0.0 to 4.4.2
sip.In-Reply-To	In-Reply-To	Character string	1.0.0 to 4.4.2
sip.Info-Package	Info-Package	Character string	1.6.0 to 4.4.2
sip.Join	Join	Character string	1.0.0 to 4.4.2
sip.Max-Breadth	Max-Breadth	Unsigned integer (32 bits)	1.2.0 to 4.4.2
sip.Max-Forwards	Max-Forwards	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sip.Method	Method	Character string	1.0.0 to 4.4.2
sip.MIME-Version	MIME-Version	Character string	1.0.0 to 4.4.2
sip.Min-Expires	Min-Expires	Character string	1.0.0 to 4.4.2
sip.Min-SE	Min-SE	Character string	1.0.0 to 4.4.2
sip.msg_body	Message Body	Byte sequence	1.0.0 to 4.4.2
sip.msg_hdr	Message Header	Character string	1.0.0 to 4.4.2
sip.Organization	Organization	Character string	1.0.0 to 4.4.2
sip.Origination-Id	Origination-Id	Character string	4.0.0 to 4.4.2
sip.P-Access-Network-Info	P-Access-Network-Info	Character string	1.0.0 to 4.4.2
sip.P-Access-Network-Info.access-type	access-type	Character string	2.2.0 to 4.4.2
sip.P-Access-Network-Info.utran-cell-id-3gpp	utran-cell-id-3gpp	Character string	2.2.0 to 4.4.2
sip.P-Answer-State	P-Answer-State	Character string	1.0.0 to 4.4.2
sip.P-Asserted-Identity	P-Asserted-Identity	Character string	1.0.0 to 4.4.2
sip.P-Asserted-Service	P-Asserted-Service	Character string	1.6.0 to 4.4.2
sip.P-Associated-URI	P-Associated-URI	Character string	1.0.0 to 4.4.2
sip.P-Called-Party-ID	P-Called-Party-ID	Character string	1.0.0 to 4.4.2
sip.P-Charge-Info	P-Charge-Info	Character string	3.4.0 to 4.4.2
sip.P-Charging-Function-Addresses	P-Charging-Function-Addresses	Character string	1.0.0 to 4.4.2
sip.P-Charging-Vector	P-Charging-Vector	Character string	1.0.0 to 4.4.2
sip.P-DCS-Billing-Info	P-DCS-Billing-Info	Character string	1.0.0 to 4.4.2
sip.P-DCS-LAES	P-DCS-LAES	Character string	1.0.0 to 4.4.2
sip.P-DCS-OSPS	P-DCS-OSPS	Character string	1.0.0 to 4.4.2
sip.P-DCS-Redirect	P-DCS-Redirect	Character string	1.0.0 to 4.4.2
sip.P-DCS-Trace-Party-ID	P-DCS-Trace-Party-ID	Character string	1.0.0 to 4.4.2
sip.P-Early-Media	P-Early-Media	Character string	1.0.0 to 4.4.2
sip.P-Media-Authorization	P-Media-Authorization	Character string	1.0.0 to 4.4.2
sip.P-Preferred-Identity	P-Preferred-Identity	Character string	1.0.0 to 4.4.2
sip.P-Preferred-Service	P-Preferred-Service	Character string	1.6.0 to 4.4.2
sip.P-Profile-Key	P-Profile-Key	Character string	1.0.0 to 4.4.2
sip.P-Refused-URI-List	P-Refused-URI-List	Character string	1.4.0 to 4.4.2
sip.P-Served-User	P-Served-User	Character string	1.4.0 to 4.4.2
sip.P-User-Database	P-User-Database	Character string	1.0.0 to 4.4.2
sip.P-Visited-Network-ID	P-Visited-Network-ID	Character string	1.0.0 to 4.4.2
sip.pai.addr	SIP PAI Address	Character string	1.2.0 to 4.4.2
sip.pai.display.info	SIP PAI display info	Character string	3.4.0 to 4.4.2
sip.pai.host	SIP PAI Host Part	Character string	1.2.0 to 4.4.2
sip.pai.param	SIP PAI URI parameter	Character string	1.8.0 to 4.4.2
sip.pai.port	SIP PAI Host Port	Character string	1.2.0 to 4.4.2
sip.pai.user	SIP PAI User Part	Character string	1.2.0 to 4.4.2
sip.Path	Path	Character string	1.0.0 to 4.4.2
sip.Path.display.info	Path URI	Character string	3.4.0 to 4.4.2
sip.Path.host	Path Host Part	Character string	2.0.0 to 4.4.2
sip.Path.param	Path URI parameter	Character string	2.0.0 to 4.4.2
sip.Path.port	Path Host Port	Character string	2.0.0 to 4.4.2
sip.Path.uri	Path URI	Character string	2.0.0 to 4.4.2
sip.Path.user	Path Userinfo	Character string	2.0.0 to 4.4.2
sip.Permission-Missing	Permission-Missing	Character string	1.2.0 to 4.4.2
sip.pmiss.addr	SIP PMISS Address	Character string	1.2.0 to 4.4.2
sip.pmiss.display.info	SIP PMISS display info	Character string	3.4.0 to 4.4.2
sip.pmiss.host	SIP PMISS Host Part	Character string	1.2.0 to 4.4.2
sip.pmiss.param	SIP PMISS URI parameter	Character string	1.8.0 to 4.4.2
sip.pmiss.port	SIP PMISS Host Port	Character string	1.2.0 to 4.4.2
sip.pmiss.user	SIP PMISS User Part	Character string	1.2.0 to 4.4.2
sip.Policy_Contact	Policy-Contact	Character string	1.10.0 to 4.4.2
sip.Policy_ID	Policy-ID	Character string	1.10.0 to 4.4.2
sip.ppi.addr	SIP PPI Address	Character string	1.2.0 to 4.4.2
sip.ppi.display.info	SIP PPI display info	Character string	3.4.0 to 4.4.2
sip.ppi.host	SIP PPI Host Part	Character string	1.2.0 to 4.4.2
sip.ppi.param	SIP PPI URI parameter	Character string	1.8.0 to 4.4.2
sip.ppi.port	SIP PPI Host Port	Character string	1.2.0 to 4.4.2
sip.ppi.user	SIP PPI User Part	Character string	1.2.0 to 4.4.2
sip.Priority	Priority	Character string	1.0.0 to 4.4.2
sip.Priority-Share	Priority-Share	Character string	4.0.0 to 4.4.2
sip.Priv-Answer-mode	Priv-Answer-mode	Character string	1.2.0 to 4.4.2
sip.Privacy	Privacy	Character string	1.0.0 to 4.4.2
sip.Proxy-Authenticate	Proxy-Authenticate	Character string	1.0.0 to 4.4.2
sip.Proxy-Authorization	Proxy-Authorization	Character string	1.0.0 to 4.4.2
sip.Proxy-Require	Proxy-Require	Character string	1.0.0 to 4.4.2
sip.r-uri	Request-URI	Character string	1.2.0 to 4.4.2
sip.r-uri.display.info	Request-URI display info	Character string	3.4.0 to 4.4.2
sip.r-uri.host	Request-URI Host Part	Character string	1.2.0 to 4.4.2
sip.r-uri.param	Request URI parameter	Character string	1.8.0 to 4.4.2
sip.r-uri.port	Request-URI Host Port	Character string	1.2.0 to 4.4.2
sip.r-uri.user	Request-URI User Part	Character string	1.2.0 to 4.4.2
sip.RAck	RAck	Character string	1.0.0 to 4.4.2
sip.RAck.CSeq.method	CSeq Method	Character string	1.0.0 to 4.4.2
sip.RAck.CSeq.seq	CSeq Sequence Number	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sip.RAck.RSeq.seq	RSeq Sequence Number	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sip.Reason	Reason	Character string	1.0.0 to 4.4.2
sip.Reason-Phrase	Reason-Phrase	Character string	1.10.0 to 4.4.2
sip.reason_cause	Cause	Unsigned integer (32 bits)	2.0.0 to 2.2.17
sip.reason_cause_other	Cause	Unsigned integer (32 bits)	2.4.0 to 4.4.2
sip.reason_cause_q850	Cause	Unsigned integer (32 bits)	2.4.0 to 4.4.2
sip.reason_cause_sip	Cause	Unsigned integer (32 bits)	2.4.0 to 4.4.2
sip.reason_protocols	Reason protocols	Character string	2.0.0 to 4.4.2
sip.reason_text	Text	Character string	2.4.0 to 4.4.2
sip.Record-Route	Record-Route	Character string	1.0.0 to 4.4.2
sip.Record-Route.display.info	Record-Route display info	Character string	3.4.0 to 4.4.2
sip.Record-Route.host	Record-Route Host Part	Character string	1.8.0 to 4.4.2
sip.Record-Route.param	Record-Route URI parameter	Character string	1.8.0 to 4.4.2
sip.Record-Route.port	Record-Route Host Port	Character string	1.8.0 to 4.4.2
sip.Record-Route.uri	Record-Route URI	Character string	1.8.0 to 4.4.2
sip.Record-Route.user	Record-Route Userinfo	Character string	1.8.0 to 4.4.2
sip.Recv-Info	Recv-Info	Character string	1.6.0 to 4.4.2
sip.Refer-Sub	Refer-Sub	Character string	1.0.0 to 4.4.2
sip.Refer-To	Refer-To	Character string	1.0.0 to 4.4.2
sip.Refered-by	Refered By	Character string	1.0.0 to 3.2.18
sip.Referred-by	Referred By	Character string	3.4.0 to 4.4.2
sip.Reject-Contact	Reject-Contact	Character string	1.0.0 to 4.4.2
sip.Relayed-Charge	Relayed-Charge	Character string	4.0.0 to 4.4.2
sip.release-time	Release Time (ms)	Unsigned integer (32 bits)	1.2.0 to 4.4.2
sip.Replaces	Replaces	Character string	1.0.0 to 4.4.2
sip.Reply-To	Reply-To	Character string	1.0.0 to 4.4.2
sip.Request-Disposition	Request-Disposition	Character string	1.0.0 to 4.4.2
sip.Request-Line	Request-Line	Character string	1.0.0 to 4.4.2
sip.Require	Require	Character string	1.0.0 to 4.4.2
sip.resend	Resent Packet	Boolean	1.0.0 to 4.4.2
sip.resend-original	Suspected resend of frame	Frame number	1.0.0 to 4.4.2
sip.Resource-Priority	Resource-Priority	Character string	1.0.0 to 4.4.2
sip.Resource-Share	Resource-Share	Character string	4.0.0 to 4.4.2
sip.response-request	Request Frame	Frame number	1.2.0 to 4.4.2
sip.Response-Source	Response-Source	Character string	4.0.0 to 4.4.2
sip.response-time	Response Time (ms)	Unsigned integer (32 bits)	1.2.0 to 4.4.2
sip.response.unusual	Expert Info	Label	1.12.0 to 2.0.16
sip.Restoration-Info	Restoration-Info	Character string	4.0.0 to 4.4.2
sip.Retry-After	Retry-After	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sip.retry_after.invalid	Invalid retry_after value	Label	3.0.0 to 4.4.2
sip.Route	Route	Character string	1.0.0 to 4.4.2
sip.Route.display.info	Route display info	Character string	3.4.0 to 4.4.2
sip.Route.host	Route Host Part	Character string	1.8.0 to 4.4.2
sip.Route.param	Route URI parameter	Character string	1.8.0 to 4.4.2
sip.Route.port	Route Host Port	Character string	1.8.0 to 4.4.2
sip.Route.uri	Route URI	Character string	1.8.0 to 4.4.2
sip.Route.user	Route Userinfo	Character string	1.8.0 to 4.4.2
sip.RSeq	RSeq	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sip.sec_mechanism	[Security-mechanism]	Character string	1.12.0 to 4.4.2
sip.sec_mechanism.alg	alg	Character string	1.12.0 to 4.4.2
sip.sec_mechanism.ealg	ealg	Character string	1.12.0 to 4.4.2
sip.sec_mechanism.malformed	SIP Security-mechanism header malformed	Label	1.12.0 to 4.4.2
sip.sec_mechanism.port1	port1	Unsigned integer (16 bits)	1.12.0 to 4.4.2
sip.sec_mechanism.port2	port2	Unsigned integer (16 bits)	1.12.0 to 4.4.2
sip.sec_mechanism.port_c	port-c	Unsigned integer (16 bits)	1.12.0 to 4.4.2
sip.sec_mechanism.port_s	port-s	Unsigned integer (16 bits)	1.12.0 to 4.4.2
sip.sec_mechanism.prot	prot	Character string	1.12.0 to 4.4.2
sip.sec_mechanism.spi_c	spi-c	Unsigned integer (32 bits)	1.12.0 to 4.4.2
sip.sec_mechanism.spi_s	spi-s	Unsigned integer (32 bits)	1.12.0 to 4.4.2
sip.Security-Client	Security-Client	Character string	1.0.0 to 4.4.2
sip.Security-Server	Security-Server	Character string	1.0.0 to 4.4.2
sip.Security-Verify	Security-Verify	Character string	1.0.0 to 4.4.2
sip.Server	Server	Character string	1.0.0 to 4.4.2
sip.Service-Interact-Info	Service-Interact-Info	Character string	4.0.0 to 4.4.2
sip.Service-Route	Service-Route	Character string	1.0.0 to 4.4.2
sip.Service-Route.display.info	Service-Route display info	Character string	3.4.0 to 4.4.2
sip.Service-Route.host	Service-Route Host Part	Character string	2.0.0 to 4.4.2
sip.Service-Route.param	Service-Route URI parameter	Character string	2.0.0 to 4.4.2
sip.Service-Route.port	Service-Route Host Port	Character string	2.0.0 to 4.4.2
sip.Service-Route.uri	Service-Route URI	Character string	2.0.0 to 4.4.2
sip.Service-Route.user	Service-Route Userinfo	Character string	2.0.0 to 4.4.2
sip.service_priority	Service Priority	Character string	2.4.0 to 4.4.2
sip.Session-Expires	Session-Expires	Character string	1.0.0 to 4.4.2
sip.Session-ID	Session-ID	Character string	2.0.0 to 4.4.2
sip.Session-ID.local_uuid	local-uuid	Globally Unique Identifier	2.0.0 to 4.4.2
sip.Session-ID.logme	logme	Boolean	3.4.0 to 4.4.2
sip.Session-ID.param	param	Character string	2.0.0 to 4.4.2
sip.Session-ID.remote_uuid	remote-uuid	Globally Unique Identifier	2.0.0 to 4.4.2
sip.Session-ID.sess_id	sess-id	Byte sequence	2.0.0 to 4.4.2
sip.Session-ID.sess_id.invalid	Session ID cannot be empty	Label	3.2.0 to 4.4.2
sip.Status-Code	Status-Code	Unsigned integer (32 bits)	1.0.0 to 4.4.2
sip.Status-Code.invalid	Invalid Status-Code	Label	2.4.0 to 4.4.2
sip.Status-Line	Status-Line	Character string	1.0.0 to 4.4.2
sip.Subject	Subject	Character string	1.0.0 to 4.4.2
sip.Subscription-State	Subscription-State	Character string	1.0.0 to 4.4.2
sip.Supported	Supported	Character string	1.0.0 to 4.4.2
sip.Suppress_If_Match	Suppress-If-Match	Character string	1.10.0 to 4.4.2
sip.tag	SIP tag	Character string	1.0.0 to 4.4.2
sip.Target-Dialog	Target-Dialog	Character string	1.0.0 to 4.4.2
sip.tc.addr	SIP TC Address	Character string	1.2.0 to 4.4.2
sip.tc.display.info	SIP TC display info	Character string	3.4.0 to 4.4.2
sip.tc.host	SIP TC Host Part	Character string	1.2.0 to 4.4.2
sip.tc.param	SIP TC URI parameter	Character string	1.8.0 to 4.4.2
sip.tc.port	SIP TC Host Port	Character string	1.2.0 to 4.4.2
sip.tc.target-uri	SIP TC Target URI	Character string	1.2.0 to 4.4.2
sip.tc.user	SIP TC User Part	Character string	1.2.0 to 4.4.2
sip.Timestamp	Timestamp	Character string	1.0.0 to 4.4.2
sip.To	To	Character string	1.0.0 to 4.4.2
sip.to.addr	SIP to address	Character string	1.0.0 to 4.4.2
sip.to.display.info	SIP to display info	Character string	3.4.0 to 4.4.2
sip.to.host	SIP to address Host Part	Character string	1.2.0 to 4.4.2
sip.to.param	SIP To URI parameter	Character string	1.8.0 to 4.4.2
sip.to.port	SIP to address Host Port	Character string	1.2.0 to 4.4.2
sip.to.tag	SIP to tag	Character string	1.8.0 to 4.4.2
sip.to.user	SIP to address User Part	Character string	1.2.0 to 4.4.2
sip.Trigger-Consent	Trigger-Consent	Character string	1.2.0 to 4.4.2
sip.unrecognized_header	Unrecognised SIP header	Label	1.12.0 to 4.4.2
sip.Unsupported	Unsupported	Character string	1.0.0 to 4.4.2
sip.uri	URI	Character string	1.0.0 to 1.2.18
sip.User-Agent	User-Agent	Character string	1.0.0 to 4.4.2
sip.uui	User-to-User	Character string	1.8.0 to 4.4.2
sip.Via	Via	Character string	1.0.0 to 4.4.2
sip.Via.be_route	be-route	Character string	4.0.0 to 4.4.2
sip.Via.branch	Branch	Character string	1.0.0 to 4.4.2
sip.Via.comp	Comp	Character string	1.0.0 to 4.4.2
sip.Via.maddr	Maddr	Character string	1.0.0 to 4.4.2
sip.Via.oc	Overload Control	Character string	2.4.0 to 4.4.2
sip.Via.oc_algo	Overload Control Algorithm	Character string	2.4.0 to 4.4.2
sip.Via.oc_seq	Overload Control Sequence	Character string	2.4.0 to 4.4.2
sip.Via.oc_seq.ts	Overload Control Sequence Time Stamp	Date and time	2.6.0 to 4.4.2
sip.Via.oc_val	Overload Control Value	Unsigned integer (32 bits)	2.6.0 to 4.4.2
sip.Via.oc_validity	Overload Control Validity	Character string	2.4.0 to 4.4.2
sip.Via.received	Received	Character string	1.0.0 to 4.4.2
sip.Via.rport	RPort	Character string	1.0.0 to 4.4.2
sip.Via.sent-by.address	Sent-by Address	Character string	1.0.0 to 4.4.2
sip.Via.sent-by.port	Sent-by port	Unsigned integer (16 bits)	1.0.0 to 4.4.2
sip.Via.sent-by.port.invalid	Invalid SIP Via sent-by-port	Label	2.4.0 to 4.4.2
sip.Via.sigcomp-id	Sigcomp identifier	Character string	1.0.0 to 4.4.2
sip.Via.transport	Transport	Character string	1.0.0 to 4.4.2
sip.Via.ttl	TTL	Character string	1.0.0 to 4.4.2
sip.Warning	Warning	Character string	1.0.0 to 4.4.2
sip.WWW-Authenticate	WWW-Authenticate	Character string	1.0.0 to 4.4.2