L.2 Interworking ISUP to SIP

29.1633GPPInterworking between the IP Multimedia (IM) Core Network (CN) subsystem and Circuit Switched (CS) networksTS

The O-MGCF may perform the following procedure based on the operator policy, if the History-Info header field is supported in the IMS network.

When receiving the called IN number parameter (and the original called IN number parameter) in the incoming IAM, the O-MGCF may include the History-Info header field in the outgoing initial INVITE request as shown in table L.2.1, table L.2.2 and table L.2.3.

The O-MGCF should first create hi-entries for the original called IN number and the called IN number and then thoses for the original called number and the redirecting number.

NOTE: It is operator specific.if an IN number is used as a first dialled number and call diversions are at the later position (it is often forbidden to have a call diversion towards an IN service number) or the contrary.

Table L.2.1: Mapping of original called IN number to History-Info header field

ISUP Parameter

Derived value of parameter field

SIP component

Value

IAM

Initial INVITE request

Original called IN number

History-Info header field

hi-targeted-to-uri of the first created hi-entry.

Nature of address indicator

"national (significant) number"

hi-targeted-to-uri

Add CC (of the country where the O-MGCF is located) to address signals of original called IN number, then map to user portion of URI scheme used.

Addr-spec

"+" CC NDC SN mapped to user portion of URI scheme used.

"international number"

Map complete address signals of original called IN number to user portion of URI scheme used.

Address signals

If NOA is "national (significant) number" then the format of the address signals is
NDC + SN.

If NOA is "international number" then the format of the address signals is
CC + NDC + SN.

hi-targeted-to-uri

"+" CC NDC SN mapped to user portion of URI scheme used.

APRI

"presentation restricted"

Privacy header field escaped in hi-targeted-to-uri corresponding to original called IN number

"history"

"presentation allowed"

Privacy header field absent or "none"

hi-index

"index=1"

Table L.2.2: Mapping of called IN number to History-Info header field

ISUP Parameter

Derived value of parameter field

SIP component

Value

IAM

Initial INVITE request

Called IN number

History-Info header field

If mapping of original called IN number is performed, then hi-targeted-to-uri of the second created hi-entry.

Otherwise, hi-targeted-to-uri of the first created hi-entry.

Nature of address indicator

"national (significant) number"

hi-targeted-to-uri

Add CC (of the country where the O-MGCF is located) to address signals of called IN number, then map to user portion of URI scheme used.

Addr-spec

"+" CC NDC SN mapped to user portion of URI scheme used.

"international number"

Map complete address signals of called IN number to user portion of URI scheme used.

Address signals

If NOA is "national (significant) number" then the format of the address signals is
NDC + SN.

If NOA is "international number" then the format of the address signals is
CC + NDC + SN.

hi-targeted-to-uri

"+" CC NDC SN mapped to user portion of URI scheme used.

APRI

"presentation restricted"

Privacy header field escaped in hi-targeted-to-uri corresponding to called IN number

"history"

"presentation allowed"

Privacy header field absent or "none"

hi-targeted-to-uri; cause-param URI parameter, as defined in IETF RFC 8119 [148].

If mapping of original called IN number is performed, then set to "380".

Otherwise, no mapping is performed.

hi-index and hi-target-param

If mapping of original called IN number is performed, then set to "index=1.1" and "mp=1".

Otherwise, set to "index=1" and no mp-param is created.

Table L.2.3: Mapping of called party number to History-Info header field

ISUP Parameter

Derived value of parameter field

SIP component

Value

IAM

Initial INVITE request

Called party number

History-Info header field

If mapping of original called IN number is performed, then hi-targeted-to-uri of the third created hi-entry.

Otherwise, hi-targeted-to-uri of the second created hi-entry.

Nature of address indicator

"national (significant) number"

hi-targeted-to-uri

Add CC (of the country where the MGCF is located) to address signals of called party number, then map to user portion of URI scheme used.

Addr-spec

"+" CC NDC SN mapped to user portion of URI scheme used.

"international number"

Map complete address signals of called party number to user portion of URI scheme used.

Address signals

If NOA is "national (significant) number" then the format of the address signals is
NDC + SN.

If NOA is "international number" then the format of the address signals is
CC + NDC + SN.

hi-targeted-to-uri

"+" CC NDC SN mapped to user portion of URI scheme used.

hi-targeted-to-uri; cause-param URI parameter, as defined in IETF RFC 8119 [148].

"380"

hi-index and hi-target-param

If both original called IN number and called IN number are mapped to hi-entries, then set to "index=1.1.1" and "mp=1.1".

If original called IN number is not mapped, but called IN number is mapped to hi-entry, then set to "index=1.1" and "mp=1".

Annex M (informative):
Change history

Change history

Date

TSG #

TSG Doc.

CR

Rev

Subject/Comment

Old

New

2014-12

CT-66

CP-140923

0830

2

Interworking of Called IN number and original Called IN number

12.5.0

13.0.0

2015-03

CT-67

CP-150130

0842

ICS call: reference correction

13.0.0

13.1.0

2015-03

CT-67

CP-150130

0843

Announcement suppression for IMS hold request

13.0.0

13.1.0

2015-03

CT-67

CP-150130

0845

Note 4 in Table 3 for mapping to CLI parameter

13.0.0

13.1.0

2015-03

CT-67

CP-150130

0846

Appearance of Redirection Number Restriction parameter

13.0.0

13.1.0

2015-03

CT-67

CP-150130

0861

1

Reference update for UUSIW

13.0.0

13.1.0

2015-03

CT-67

CP-150097

0855

2

Correction of APRI Mapping for Generic Number

13.0.0

13.1.0

2015-03

CT-67

CP-150097

0849

1

Correction to attribute "a=inactive" in initial INVITE

13.0.0

13.1.0

2015-03

CT-67

CP-150130

0847

Inclusion of RFC7044

13.0.0

13.1.0

2015-03

CT-67

CP-150129

0850

2

Reference update: draft-mohali-dispatch-cause-for-service-number

13.0.0

13.1.0

2015-03

CT-67

CP-150121

0864

2

Adding support for EVS codec

13.0.0

13.1.0

2015-06

CT-68

CP-150336

0873

Reference Update: RFC7462 (alert-info urns)

13.1.0

13.2.0

2015-06

CT-68

CP-150334

0879

4

Handling of 415 response for multipart MIME

13.1.0

13.2.0

2015-06

CT-68

CP-150358

0880

1

Reference update:draft-mohali-dispatch-cause-for-service-number

13.1.0

13.2.0

2015-06

CT-68

CP-150335

0886

2

User-to-user information interworking

13.1.0

13.2.0

2015-06

CT-68

CP-150364

0887

1

Hold/Resume request indication

13.1.0

13.2.0

2015-06

CT-68

CP-150359

0888

1

Adding support for the EVS codec over UMTS CS

13.1.0

13.2.0

2015-06

CT-68

CP-150338

0893

1

APRI Mapping for mutiple Privacy header values

13.1.0

13.2.0

2015-06

CT-68

CP-150351

0895

Bearer Termination in Acknowledgements

13.1.0

13.2.0

2015-06

CT-68

CP-150334

0901

3

URI scheme in History-Info header field

13.1.0

13.2.0

2015-06

CT-68

CP-150364

0902

CDIV – miscellaneous corrections

13.1.0

13.2.0

2015-06

CT-68

CP-150353

0904

1

EVS corrections

13.1.0

13.2.0

2015-09

CT-69

CP-150470

0912

1

Indication of "no backward early media" for ICS call

13.2.0

13.3.0

2015-09

CT-69

CP-150479

0913

1

Reference update:draft-mohali-dispatch-cause-for-service-number

13.2.0

13.3.0

2015-09

CT-69

CP-150462

0920

2

Sending of IAM at I-MGCF for SIP-BICC-interworking

13.2.0

13.3.0

2015-12

CT-70

CP-150667

0914

8

Stage 2 Mn supporting SDP capability negotiation

13.3.0

13.4.0

2015-12

CT-70

CP-150656

0923

HOLD request from CS side: suspending media to the conference

13.3.0

13.4.0

2015-12

CT-70

CP-150657

0924

2

Reference update: draft-mohali-dispatch-cause-for-service-number

13.3.0

13.4.0

2015-12

CT-70

CP-150648

0925

3

Updates to MGCF and IM-MGW to support EVS over UMTS CS

13.3.0

13.4.0

2015-12

CT-70

CP-150670

0931

2

URI scheme in History-Info header field

13.3.0

13.4.0

2015-12

CT-70

CP-150655

0933

1

ICS call: removal of non-interworking requirement

13.3.0

13.4.0

2015-12

CT-70

CP-150796

0940

2

Correcting the clause title and the NOTE for interworking of Request-URI

13.3.0

13.4.0

2015-12

CT-70

CP-150670

0946

1

Removal for the unsupported SIPS URI scheme

13.3.0

13.4.0

Change history

Date

Meeting

TDoc

CR

Rev

Cat

Subject/Comment

New version

2016-03

CT#71

CP-160102

0954

2

B

Support of enhanced bandwidth negotiation mechanism for MTSI sessions

13.5.0

2016-03

CT#71

CP-160112

0955

1

B

Resolution of Editor’s notes on EVS over UMTS CS

13.5.0

2016-03

CT#71

CP-160105

0961

1

F

Correction for the SIP-ISUP interworking parameter

13.5.0

2016-03

CT#71

CP-160105

0967

2

F

Clarification on the setting of the SIP message components

13.5.0

2016-03

CT#71

CP-160105

0968

F

Removal of references to TS 26.235 and TS 26.236

13.5.0

2016-03

CT#71

CP-160111

0970

2

A

Corrections to EVS AMR-WB IO mode-change-capability MIME parameter handling

13.5.0

2016-06

CT#72

CP-160257

0953

5

A

Interworking of History-Info Header Field when Original Called Number is not present

13.6.0

2016-06

CT#72

CP-160256

0974

A

Mapping P-Access-Network-Info header to Location Number, clarifications

13.6.0

2016-06

CT#72

CP-160272

0976

3

F

Clarification on counting diverting entries

13.6.0

2016-06

CT#72

CP-160261

0977

F

Update ref to draft-mohali-dispatch-cause-for-service-number-06

13.6.0

2016-06

CT#72

CP-160260

0975

F

Correcting name of "network-provided" parameter

14.0.0

2016-09

CT#73

CP-160451

0978

1

F

Correction for the SIP-ISUP interworking regarding redirection counter

14.1.0

2016-09

CT#73

CP-160450

0980

1

A

Correction on mapping from 3GPP EVS to UMTS_EVS codec

14.1.0

2016-09

CT#73

CP-160451

0981

1

F

Clarification on handling of P-Early-Media header

14.1.0

2016-09

CT#73

CP-160449

0983

1

A

Updated ref to draft-mohali-dispatch-cause-for-service-number-07

14.1.0

2016-12

CT#74

CP-160635

0990

1

F

Unknown User Identity for Call Diversion

14.2.0

2016-12

CT#74

CP-160631

0991

2

D

Correction of Calculation of Redirection Counter

14.2.0

2016-12

CT#74

CP-160624

0993

1

A

Updated ref to draft-mohali-dispatch-cause-for-service-number-09

14.2.0

2016-12

CT#74

CP-160617

0995

2

A

Updates to EVS over CS aspects

14.2.0

2016-12

CT#74

CP-160631

0996

1

F

Correction of Calculation of Redirection Counter

14.2.0

2016-12

CT#74

CP-160618

0999

1

A

Handling of dtx and dtx-recv MIME parameters in SDP offer/answer

14.2.0

2016-12

CT#74

CP-160631

1000

D

Update of subclause 9.2.3.4.2

14.2.0

2017-03

CT#75

CP-170080

1005

1

A

Update ref to draft-mohali-dispatch-cause-for-service-number

14.3.0

2017-03

CT#75

CP-170085

1006

B

Support of "Calling number verification"

14.3.0

2017-06

CT#76

CP-171130

1007

1

B

Addition of the location parameter

14.4.0

2017-06

CT#76

CP-171131

1009

F

Mapping of additional 4xx response codes for SPECTRE

14.4.0

2017-06

CT#76

CP-171124

1011

1

A

Reference Update RFC8119"

14.4.0

2017-06

CT#76

CP-171131

1012

1

F

Reference update: draft-ietf-sipcore-status-unwanted

14.4.0

2017-06

CT#76

CP-171131

1013

F

Reference update: draft-ietf-stir-rfc4474bis

14.4.0

2017-09

CT#77

CP-172045

1014

1

F

Reference Update for the ISUP location parameter

14.5.0

2017-09

CT#77

CP-172049

1015

F

Reference update from draft-ietf-sipcore-status-unwanted-06 to RFC 8197

14.5.0

2017-09

CT#77

CP-172050

1016

1

F

"user=phone" URI parameter for SIP URIs in the SIP P-Asserted-Identity header field

15.0.0

2017-12

CT#78

CP-173099

1018

1

A

Reference Update for the ISUP location parameter

15.1.0

2017-12

CT#78

CP-173099

1020

A

Reference Update for the ISUP location parameter

15.1.0

2018-03

CT#79

CP-180041

1021

2

B

Interworking of Subaddress for user specified type

15.2.0

2018-03

CT#79

CP-180042

1023

A

Reference Update for the ISUP location parameter

15.2.0

2018-03

CT#79

CP-180044

1025

A

Reference update: RFC 8224

15.2.0

2018-06

CT#80

CP-181022

1026

F

Interwork of Connected subaddress IE carried in ISUP CON message

15.3.0

2018-06

CT#80

CP-181018

1031

A

Correction of the Backward call indicators parameter interworking

15.3.0

2018-06

CT#80

CP-181016

1040

1

B

Providing attestation information

15.3.0

2018-09

CT#81

CP-182028

1042

2

F

Correction of the Interworking of the Redirecting Number

15.4.0

2018-09

CT#81

CP-182024

1044

A

Reference Update for the ISUP Q.850 location parameter

15.4.0

2018-12

CT#82

CP-183112

1053

A

Resolution of Editor’s Notes in TS 29.163

15.5.0

2018-12

CT#82

CP-183115

1045

2

B

New Q850 cause for Call completed elsewhere

16.0.0

2019-03

CT#83

CP-190122

1054

1

F

Correction for the encoding of the INFO message for overlap signalling using the in-dialog method

16.1.0

2019-03

CT#83

CP-190126

1057

2

A

Reference Update for the ISUP Cause Location Parameter Draft

16.1.0

2019-06

CT#84

CP-191094

1061

A

Reference Update for the ISUP Cause Location Parameter Draft

16.2.0

2019-09

CT#85

CP-192174

1058

4

F

Modification on the setting of P-Asserted-Identity header field when a calling party number is not available.

16.3.0

2019-09

CT#85

CP-192166

1064

1

A

Reference Update RFC8606

16.3.0

2019-09

CT#85

CP-192161

1069

1

A

Mapping of History-Info header field to ISUP Original called number

16.3.0

2019-12

CT#86

CP-193218

1070

4

B

Interworking of Local Number Format in Generic Number

16.4.0

2019-12

CT#86

CP-193218

1071

F

Modification on the condition of setting of the Privacy header field when the call is diverted

16.4.0

2019-12

CT#86

CP-193218

1072

1

B

Interworking of Local Number Format in From Header Field

16.4.0

2021-03

CT#91e

CP-210223

1073

1

D

Inclusive language review – 29.163

17.0.0

2021-03

CT#91e

CP-210223

1074

D

Removal of strange text

17.0.0

2021-03

CT#91e

CP-210233

1075

1

F

Correction of the incorrect SIP header name and value

17.0.0

2021-06

CT#92e

CP-211252

1076

1

F

Addition of missing abbreviations.

17.1.0

2021-12

CT#94e

CP-213245

1077

F

Clarification for interworking of original redirection reason

17.2.0

2022-03

CT#95e

CP-220209

1078

1

C

Update of IETF references for ICE and STUN

17.3.0