B.7 INVITE method

29.1653GPPInter-IMS Network to Network Interface (NNI)Release 18TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

The table B.7.1 lists the supported header fields within the INVITE request.

Table B.7.1: Supported header fields within the INVITE request

Item	Header field	Ref.	RFC status	II-NNI condition
1	Accept	[13]	o	IF dc1 (AOC: clause 12.22) THEN dm ELSE do
2	Accept-Contact	[51]	o	IF dc2 (PNM: clause 12.17) THEN dm ELSE do
3	Accept-Encoding	[13]	o	do
4	Accept-Language	[13]	o	do
5	Additional-Identity	[5]	n/a	IF table 6.1.3.1/126 THEN do (NOTE 3)
6	Alert-Info	[13]	o	IF dc3 (CRS: clause 12.15) THEN dm ELSE IF table 6.1.3.1/10 THEN do (NOTE 3)
7	Allow	[13]	o	do
8	Allow-Events	[20]	o	IF table 6.1.3.1/23 THEN do (NOTE 3)
9	Answer-Mode	[94]	o	IF table 6.1.3.1/90 THEN do (NOTE 3)
10	Authorization	[13]	o	IF table 6.1.3.1/7 THEN do (NOTE 3)
11	Attestation-Info	[5]	n/a	IF (non-roaming II-NNI OR loopback traversal scenario) AND table 6.1.3.1/123 THEN do (NOTE 3)
12	Call-ID	[13]	m	dm
13	Call-Info	[13]	o	IF dc4 (CCBS/CCNR/CCNL: clause 12.11/12.12/12.23) OR dc5 (announcements: clause 12.21) OR dc13 (eCNAM: clause 12.25) THEN dm ELSE do
14	Cellular-Network-Info	[5]	n/a	IF table 6.1.3.1/117 THEN do (NOTE 3)
15	Contact	[13]	m	dm
16	Content-Disposition	[13]	o	IF dc6 (AOC: clause 12.22) THEN dm ELSE do
17	Content-Encoding	[13]	o	do
18	Content-ID	[216]	o	IF table 6.1.3.1/122 THEN do
19	Content-Language	[13]	o	do
20	Content-Length	[13]	t	dt
21	Content-Type	[13]	*	d*
22	CSeq	[13]	m	dm
23	Date	[13]	o	do
24	Expires	[13]	o	do
25	Feature-Caps	[143]	o	IF table 6.1.3.1/103 THEN do (NOTE 3)
26	From	[13]	m	dm
27	Geolocation	[68]	o	do
28	Geolocation-Routing	[68]	o	do
29	History-Info	[25]	o	IF dc7 (CDIV: clause 12.6) OR dc2 (PNM: clause 12.17) THEN dm ELSE IF table 6.1.3.1/50 AND initial request THEN do (NOTE 1, NOTE 3)
30	Identity	[206]	o	IF (non-roaming II-NNI OR loopback traversal scenario) AND table 6.1.3.1/119 THEN do (NOTE 3)
31	In-Reply-To	[13]	o	do
32	Join	[55]	o	IF table 6.1.3.1/48 THEN do (NOTE 3)
33	Max-Breadth	[79]	o	do
34	Max-Forwards	[13]	m	dm
35	MIME-Version	[13]	o	do
36	Min-SE	[52]	o	do
37	Organization	[13]	o	do
38	Origination-Id	[5]	n/a	IF (non-roaming II-NNI OR loopback traversal scenario) AND table 6.1.3.1/124 THEN do (NOTE 3)
39	P-Access-Network-Info	[24], [24B]	o	IF table 6.1.3.1/36 THEN do (NOTE 3)
40	P-Asserted-Identity	[44]	o	IF table 6.1.3.1/27 AND initial request THEN dm (NOTE 2, NOTE 3)
41	P-Asserted-Service	[26]	o	IF (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited request on roaming II-NNI) AND table 6.1.3.1/77 AND initial request THEN do (NOTE 3)
42	P-Called-Party-ID	[24]	o	IF home-to-visited request on roaming II-NNI AND table 6.1.3.1/34 THEN do (NOTE 3)
43	P-Charging-Function-Addresses	[24]	o	dn/a
44	P-Charging-Vector	[24]	o	IF table 6.1.3.1/38 AND initial request THEN dm (NOTE 3)
45	P-Early-Media	[74]	o	IF table 6.1.3.1/69 THEN do (NOTE 3)
46	P-Media-Authorization	[42]	o	dn/a
47	P-Preferred-Identity	[44]	o	dn/a
48	P-Preferred-Service	[26]	o	IF visited-to-home request on roaming II-NNI AND table 6.1.3.1/77 AND initial request THEN do (NOTE 3)
49	P-Private-Network-Indication	[84]	o	IF table 6.1.3.1/80 AND initial request THEN do (NOTE 3)
50	P-Profile-Key	[64]	o	IF table 6.1.3.1/59 AND initial request THEN do (NOTE 3)
51	P-Served-User	[85]	o	IF visited-to-home request on roaming II-NNI AND initial request being sent from "privileged sender" THEN dm (NOTE 3)
52	P-User-Database	[60]	o	dn/a
53	P-Visited-Network-ID	[24]	o	dn/a
54	Priority	[13]	o	do
55	Priority-Share	[5]	n/a	IF home-to-visited request on roaming II-NNI AND table 6.1.3.1/118 THEN do (NOTE 3)
56	Priority-Verstat	[5]	n/a	IF (non-roaming II-NNI OR loopback traversal scenario) AND table 6.1.3.1/128 THEN do (NOTE 3)
57	Privacy	[34]	o	IF dc8 (OIP/OIR: clause 12.3) THEN dm ELSE do
58	Priv-Answer-Mode	[94]	o	IF table 6.1.3.1/90 THEN do (NOTE 3)
59	Proxy-Authorization	[13]	o	IF table 6.1.3.1/7 THEN do (NOTE 3)
60	Proxy-Require	[13]	o	do
61	Reason	[48]	o	IF table 6.1.3.1/40 AND subsequent request THEN do (NOTE 3)
62	Record-Route	[13]	o	do
63	Recv-Info	[39]	m	IF table 6.1.3.1/17 THEN dm (NOTE 3)
64	Referred-By	[53]	o	IF dc9 (ECT: clause 12.13) OR dc10 (CONF: clause 12.19) THEN dm ELSE do
65	Reject-Contact	[51]	o	do
66	Relayed-Charge	[5]	n/a	dn/a
67	Replaces	[54]	o	IF dc11 (ECT: clause 12.13) OR dc12 (CONF: clause 12.19) THEN dm ELSE IF table 6.1.3.1/47 THEN do (NOTE 3)
68	Reply-To	[13]	o	do
69	Request-Disposition	[51]	o	do
70	Require	[13]	c	IF dc11 (ECT: clause 12.13) THEN dm ELSE dc
71	Resource-Priority	[78]	o	IF table 6.1.3.1/73 THEN do (NOTE 3)
72	Resource-Share	[5]	n/a	IF (home-to-visited request on roaming II-NNI OR visited-to-home request on roaming II-NNI) AND table 6.1.3.1/116 THEN do (NOTE 3)
73	Restoration-Info	[5]	n/a	IF home-to-visited request on roaming II-NNI AND initial request AND table 6.1.3.1/113 THEN do (NOTE 3)
74	Route	[13]	c	dc
75	Security-Client	[47]	o	dn/a
76	Security-Verify	[47]	o	dn/a
77	Service-Interact-Info	[5]	n/a	IF table 6.1.3.1/125 AND initial request THEN do (NOTE 3)
78	Session-Expires	[52]	o	do
79	Session-ID	[124]	m	IF table 6.1.3.1/94 THEN dm (NOTE 3)
80	Subject	[13]	o	do
81	Supported	[13]	m*	IF dc2 (PNM: clause 12.17) THEN dm ELSE dm*
82	Target-Dialog	[140]	o	IF table 6.1.3.1/102 THEN do (NOTE 3)
83	Timestamp	[13]	o	do
84	To	[13]	m	dm
85	Trigger-Consent	[82]	o	IF table 6.1.3.1/78 THEN do (NOTE 3)
86	User-Agent	[13]	o	do
87	User-to-User	[83]	o	IF table 6.1.3.1/79 THEN do (NOTE 3)
88	Via	[13]	m	dm
dc1: request invoked due to AOC AND visited-to-home request on roaming II-NNI dc2: initial request invoked due to PNM in case of ("PN UE redirection" OR "PN access control") AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited request on roaming II-NNI) dc3: initial request invoked due to CRS AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited request on roaming II-NNI) dc4: initial request invoked due to CCBS/CCNR/CCNL AND "CC call" request AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited request on roaming II-NNI) dc5: subsequent request invoked due to announcements using the Call-info header field AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited request on roaming II-NNI) dc6: request invoked due to AOC AND home-to-visited request on roaming II-NNI dc7: initial request towards the network serving "the diverted-to user" AND CFU/CFB/CFNR/CFNRc/CD/CFNL AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited request on roaming II-NNI) dc8: (initial request invoked due to OIP/OIR AND "override the default setting" in temporary mode AND visited-to-home request on roaming II-NNI) OR (initial request invoked due to OIP/OIR AND "presentation of the public user identity is restricted" AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited request on roaming II-NNI)) dc9: initial request invoked due to ECT AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited request on roaming II-NNI) dc10: (initial request from "conference participant" receiving REFER request with Referred-By header field AND (visited-to-home request on roaming II-NNI OR non-roaming II-NNI OR loopback traversal scenario)) OR (initial request from "conference focus" receiving REFER request AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited request on roaming II-NNI)) dc11: "Consultative transfer" due to ECT AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited request on roaming II-NNI) dc12: initial request from "conference focus" receiving REFER request with Replaces header field escaped in Refer-To header field AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited request on roaming II-NNI) dc13: initial request AND home-to-visited request on roaming II-NNI
NOTE 1: The Privacy header field can be escaped in the header field for CDIV. NOTE 2: The header field is not included in some exceptional cases. (e.g. when an incoming call from a circuit-switched network has not included the required information to be mapped into the header field) NOTE 3: If the capability specified in table 6.1.3.1 is not supported over the II-NNI, the IBCF in the receiving network can omit or modify the SIP header fields in the received SIP message prior to forwarding the SIP message as specified in 3GPP TS 24.229 [5] clause 5.10.6.2.

The table B.7.2 lists the supported header fields within the INVITE response.

Table B.7.2: Supported header fields within the INVITE response

Item	Header field	SIP status code	Ref.	RFC status	II-NNI condition
1	Accept	2xx	[13]	o	do
1	Accept	415	[13]	c	dc
2	Accept-Encoding	2xx	[13]	o	do
2	Accept-Encoding	415	[13]	c	dc
3	Accept-Language	2xx	[13]	o	do
3	Accept-Language	415	[13]	c	dc
4	Accept-Resource-Priority	2xx 417	[78]	o	IF table 6.1.3.1/73 THEN do (NOTE 3)
5	Alert-Info	180	[13]	o	IF dc1 (CW: clause 12.7) OR dc2 (announcements: clause 12.21) THEN dm ELSE IF table 6.1.3.1/10 THEN do (NOTE 3)
6	Allow	2xx	[13]	m*	dm*
		405		m	dm
		others		o	do
7	Allow-Events	2xx	[20]	o	IF table 6.1.3.1/23 THEN do (NOTE 3)
8	Answer-Mode	2xx	[94]	o	IF table 6.1.3.1/90 THEN do (NOTE 3)
9	Authentication-Info	2xx	[13]	o	IF table 6.1.3.1/7 THEN do (NOTE 3)
10	Call-ID	100 others	[13]	m	dm
11	Call-Info	r	[13]	o	IF dc3 (CCBS: clause 12.11) OR dc4 (CCNR: clause 12.12) OR dc5 (CCNL: clause 12.23) THEN dm ELSE do
12	Cellular-Network-Info	r	[5]	n/a	IF table 6.1.3.1/117 THEN do (NOTE 3)
13	Contact	18x 199	[13] [5]	o	dm
		2xx		m	dm
		3xx 485		o	do
14	Content-Disposition	r	[13]	o	IF dc6 (AOC: clause 12.22) THEN dm ELSE do
15	Content-Encoding	r	[13]	o	do
16	Content-ID	r	[216]	o	IF table 6.1.3.1/122 THEN do
17	Content-Language	r	[13]	o	do
18	Content-Length	100 others	[13]	t	dt
19	Content-Type	r	[13]	*	IF dc7 (CCBS: clause 12.11) OR dc8 (CCNR/CCNL: clause 12.12/12.23) THEN dm ELSE d*
20	CSeq	100 others	[13]	m	dm
21	Date	100 others	[13]	o	IF dc7 (CCBS: clause 12.11) OR dc8 (CCNR/CCNL: clause 12.12/12.23) THEN dm ELSE do
22	Error-Info	3xx-6xx	[13]	o	IF dc9 (announcements: clause 12.21) THEN dm ELSE IF table 6.1.3.1/13 THEN do (NOTE 3)
23	Expires	r	[13]	o	do
24	Feature-Caps	18x 2xx	[143]	o	IF table 6.1.3.1/103 THEN do (NOTE 3)
25	From	100 others	[13]	m	dm
26	Geolocation-Error	424	[68]	m	dm
26	Geolocation-Error	others	[68]	o	do
27	History-Info	r	[25]	o	IF table 6.1.3.1/50 AND response to initial request THEN do (NOTE 2, NOTE 3, NOTE 4)
28	MIME-version	r	[13]	o	do
29	Min-SE	422	[52]	m	dm
30	Organization	r	[13]	o	do
31	P-Access-Network-Info	r	[24], [24A], [24B]	o	IF table 6.1.3.1/36 THEN do (NOTE 3)
32	P-Answer-State	18x 2xx	[73]	o	IF table 6.1.3.1/68 THEN do (NOTE 3)
33	P-Asserted-Identity	r	[44]	o	IF dc11 (TIP/TIR: clause 12.4) THEN dm ELSE IF table 6.1.3.1/27 AND response to initial request THEN do (NOTE 3)
34	P-Charging-Function-Addresses	r	[24], [24A]	o	dn/a
35	P-Charging-Vector	100	[24], [24A]	o	dn/a
		18x, 2xx		o	IF (table 6.1.3.1/38 AND response to initial request) OR dc 12(CONF: clause 12.19) THEN dm (NOTE 3)
		3xx-6xx		o	do (NOTE 3)
36	P-Early-Media	18x	[74]	o	IF dc13 (CAT: clause 12.14) OR dc14 (announcements: clause 12.21) THEN dm ELSE IF table 6.1.3.1/69 THEN do (NOTE 3)
37	P-Media-Authorization	18x 2xx	[42]	o	dn/a
38	P-Preferred-Identity	r	[44]	o	dn/a
39	P-Refused-URI-List	403	[141]	o	IF (non-roaming II-NNI OR loopback traversal scenario) AND table 6.1.3.1/101 THEN do (NOTE 3)
40	Permission-Missing	470	[82]	o	IF table 6.1.3.1/78 THEN do (NOTE 3)
41	Priority-Share	18x 2xx	[5]	n/a	IF home-to-visited response on roaming II-NNI AND table 6.1.3.1/118 THEN do (NOTE 3)
42	Privacy	r	[34]	o	IF dc15 (TIP/TIR: clause 12.4) THEN dm ELSE do
43	Priv-Answer-Mode	2xx	[94]	o	IF table 6.1.3.1/90 THEN do (NOTE 3)
44	Proxy-Authenticate	401 (NOTE 1)	[13]	o	do
44	Proxy-Authenticate	407 (NOTE 1)	[13]	m	dm
45	Reason	18x 199 3xx-6xx	[48]	o	IF dc16 (CW: clause 12.7) OR dc17 (ICB: clause 12.10.1) OR dc18 (announcements: clause 12.21) THEN dm ELSE IF table 6.1.3.1/40 OR ((non-roaming II-NNI OR loopback traversal scenario) AND table 6.1.3.1/41B) THEN do (NOTE 3)
45	Reason	2xx	[48]	o	IF (non-roaming II-NNI OR loopback traversal scenario) AND table 6.1.3.1/41B THEN do (NOTE 3)
46	Record-Route	18x 199 2xx	[13]	o	do
47	Recv-Info	18x 199 2xx	[39]	c	IF table 6.1.3.1/17 THEN dc (NOTE 3)
48	Relayed-Charge	r	[5]	n/a	dn/a
49	Reply-To	r	[13]	o	do
50	Require	r	[13]	c	IF dc19 (CAT: clause 12.14) THEN dm ELSE dc
51	Resource-Share	18x 2xx	[5]	n/a	IF (home-to-visited response on roaming II-NNI OR visited-to-home response on roaming II-NNI) AND table 6.1.3.1/116 THEN do (NOTE 3)
52	Response-Source	3xx-6xx	[5]	n/a	IF table 6.1.3.1/121 THEN do (NOTE 3)
53	Restoration-Info	408	[5]	n/a	IF table 6.1.3.1/114 AND response to initial request AND visited-to-home response on roaming II-NNI THEN do (NOTE 3)
54	Retry-After	404 413 480 486 500 503 600 603	[13]	o	do
55	RSeq	18x 199	[18]	o	do
56	Security-Server	421 494	[47]	o	dn/a
57	Server	r	[13]	o	do
58	Service-Interact-Info	18x 2xx	[5]	n/a	IF table 6.1.3.1/125 AND response to initial request THEN do (NOTE 3)
59	Session-Expires	2xx	[52]	o	do
60	Session-ID	r	[124]	m	IF table 6.1.3.1/94 THEN dm (NOTE 3)
61	Supported	2xx	[13]	m*	dm*
62	Timestamp	r	[13]	o	do
63	To	100 others	[13]	m	dm
64	Unsupported	420	[13]	m	dm
65	User-Agent	r	[13]	o	do
66	User-to-User	r	[83]	o	IF table 6.1.3.1/79 THEN do (NOTE 3)
67	Via	100 others	[13]	m	dm
68	Warning	r	[13]	o	IF dc20 (CDIV: clause 12.6) THEN dm ELSE do
69	WWW-Authenticate	401 (NOTE 1)	[13]	m	dm
69	WWW-Authenticate	407 (NOTE 1)	[13]	o	do
dc1: response invoked due to CW AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited response on roaming II-NNI) dc2: response to initial request invoked due to announcements using the Alert-Info header field AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited response on roaming II-NNI) dc3: 486 (Busy Here) response invoked due to CCBS AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited response on roaming II-NNI) dc4: 180 (Ringing) response invoked due to CCNR AND (non-roaming II-NNI OR loopback traversal scenario) dc5: 480 (Temporarily Unavailable) response invoked due to CCNL AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited response on roaming II-NNI) dc6: non-100 provisional response /200 (OK) response invoked due to AOC AND home-to-visited response on roaming II-NNI dc7: 486 (Busy Here) response invoked due to CCBS AND home-to-visited response on roaming II-NNI dc8: 480 (Temporarily Unavailable) response invoked due to CCNR/CCNL AND home-to-visited response on roaming II-NNI dc9: response to initial request invoked due to announcements using the Error-Info header field AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited response on roaming II-NNI) dc11: (TIP/TIR AND 2xx response to initial request AND (visited-to-home response on roaming II-NNI OR non-roaming II-NNI OR loopback traversal scenario)) OR (TIP/TIR AND response to initial request AND "presentation is allowed" AND home-to-visited response on roaming II-NNI) dc12: first response from "conference focus" to initial request AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited response on roaming II-NNI) dc13: reliable 18x response to initial request invoked due to CAT using ("forking model" OR "gateway model") AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited response on roaming II-NNI) dc14: 18x response to initial request invoked due to announcements authorizing early media AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited response on roaming II-NNI) dc15: (TIP/TIR AND non-100 response to initial request AND "override the default setting" in temporary mode AND visited-to-home response on roaming II-NNI) OR (TIP/TIR AND 2xx response to initial request AND "presentation of the network asserted identity is restricted" AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited response on roaming II-NNI)) dc16: 480 (Temporarily Unavailable) response invoked due to CW at the expiry of the "CW timer" dc17: 603 (Decline) response invoked due to "dynamic ICB" on an early dialog dc18: 183 (Session Progress) response to initial request invoked due to announcements authorizing early media when rejecting a communication request AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited response on roaming II-NNI) dc19: first 18x response to initial request invoked due to CAT using "early session model" AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited response on roaming II-NNI) dc20: 480 (Temporarily Unavailable)/486 (Busy Here) response to initial request AND CFU/CFB/CFNR/CFNRc/CD/CFNL in case "maximum number of diversions" exceeds AND (non-roaming II-NNI OR loopback traversal scenario OR home-to-visited response on roaming II-NNI)
NOTE 1: The SIP status code is only applicable over the roaming II-NNI. NOTE 2: The Privacy header field can be escaped in the header field for CDIV. NOTE 3: If the capability specified in table 6.1.3.1 is not supported over the II-NNI, the IBCF in the receiving network can omit or modify the SIP header fields in the received SIP message prior to forwarding the SIP message as specified in 3GPP TS 24.229 [5] clause 5.10.6.2. NOTE 4: History-Info header field is always included, if the AS supporting CDIV requirements is applied to the corresponding initial INVITE request applying CDIV at the home IMS network of the terminating user.