API for the IMS Session Management Service. An OpenAPI 3.0.0 document with 2 path(s), API version 1.0.0, published verbatim by 3GPP in 3GPP TS 29.522 as part of the 5G NEF Northbound (Network Exposure) suite and mirrored in the public 3GPP Forge GitLab repository.
openapi: 3.0.0
info:
title: 3gpp-ims-sm
version: 1.0.0
description: |
API for the IMS Session Management Service.
© 2025, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC).
All rights reserved.
externalDocs:
description: >
3GPP TS 29.522 V19.5.0; 5G System; Network Exposure Function Northbound APIs.
url: 'https://www.3gpp.org/ftp/Specs/archive/29_series/29.522/'
security:
- {}
- oAuth2ClientCredentials: []
servers:
- url: '{apiRoot}/3gpp-ims-sm/v1'
variables:
apiRoot:
default: https://example.com
description: apiRoot as defined in clause 5.2.4 of 3GPP TS 29.122.
paths:
/ims-sessions:
get:
summary: Request to retrieve all the active IMS Sessions managed by the NEF.
operationId: GetImsSessions
tags:
- IMS Sessions (Collection)
responses:
'200':
description: >
OK. All the "Individual IMS Session" resource(s) managed by the NEF are returned.
If there are no active "Individual IMS Session" resources at the NEF, an empty array is
returned.
content:
application/json:
schema:
type: array
items:
$ref: '#/components/schemas/ImsSession'
minItems: 0
'307':
$ref: 'TS29122_CommonData.yaml#/components/responses/307'
'308':
$ref: 'TS29122_CommonData.yaml#/components/responses/308'
'400':
$ref: 'TS29122_CommonData.yaml#/components/responses/400'
'401':
$ref: 'TS29122_CommonData.yaml#/components/responses/401'
'403':
$ref: 'TS29122_CommonData.yaml#/components/responses/403'
'404':
$ref: 'TS29122_CommonData.yaml#/components/responses/404'
'406':
$ref: 'TS29122_CommonData.yaml#/components/responses/406'
'429':
$ref: 'TS29122_CommonData.yaml#/components/responses/429'
'500':
$ref: 'TS29122_CommonData.yaml#/components/responses/500'
'503':
$ref: 'TS29122_CommonData.yaml#/components/responses/503'
default:
$ref: 'TS29122_CommonData.yaml#/components/responses/default'
post:
summary: Request to create a new IMS Session resource.
operationId: CreateImsSession
tags:
- IMS Session Creation (Collection)
requestBody:
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/ImsSession'
responses:
'201':
description: >
Created. The Individual IMS Session resource is successfully created and a
representation of the created resource is returned in the response body.
content:
application/json:
schema:
$ref: '#/components/schemas/ImsSession'
headers:
Location:
description: >
Contains the URI of the newly created resource.
required: true
schema:
type: string
'400':
$ref: 'TS29122_CommonData.yaml#/components/responses/400'
'401':
$ref: 'TS29122_CommonData.yaml#/components/responses/401'
'403':
$ref: 'TS29122_CommonData.yaml#/components/responses/403'
'404':
$ref: 'TS29122_CommonData.yaml#/components/responses/404'
'409':
$ref: 'TS29122_CommonData.yaml#/components/responses/409'
'411':
$ref: 'TS29122_CommonData.yaml#/components/responses/411'
'413':
$ref: 'TS29122_CommonData.yaml#/components/responses/413'
'415':
$ref: 'TS29122_CommonData.yaml#/components/responses/415'
'429':
$ref: 'TS29122_CommonData.yaml#/components/responses/429'
'500':
$ref: 'TS29122_CommonData.yaml#/components/responses/500'
'503':
$ref: 'TS29122_CommonData.yaml#/components/responses/503'
default:
$ref: 'TS29122_CommonData.yaml#/components/responses/default'
callbacks:
ImsSessionNotif:
'{$request.body#/notifUri}':
post:
requestBody:
required: true
content:
application/json:
schema:
$ref: 'TS29175_Nimsas_ImsSessionManagement.yaml#/components/schemas/ImsSessionEventNotification'
responses:
'204':
description: >
No Content. The IMS Session Notification is successfully received and
acknowledged.
'307':
$ref: 'TS29122_CommonData.yaml#/components/responses/307'
'308':
$ref: 'TS29122_CommonData.yaml#/components/responses/308'
'400':
$ref: 'TS29122_CommonData.yaml#/components/responses/400'
'401':
$ref: 'TS29122_CommonData.yaml#/components/responses/401'
'403':
$ref: 'TS29122_CommonData.yaml#/components/responses/403'
'404':
$ref: 'TS29122_CommonData.yaml#/components/responses/404'
'411':
$ref: 'TS29122_CommonData.yaml#/components/responses/411'
'413':
$ref: 'TS29122_CommonData.yaml#/components/responses/413'
'415':
$ref: 'TS29122_CommonData.yaml#/components/responses/415'
'429':
$ref: 'TS29122_CommonData.yaml#/components/responses/429'
'500':
$ref: 'TS29122_CommonData.yaml#/components/responses/500'
'503':
$ref: 'TS29122_CommonData.yaml#/components/responses/503'
default:
$ref: 'TS29122_CommonData.yaml#/components/responses/default'
/ims-sessions/{sessionId}:
parameters:
- name: sessionId
in: path
description: >
Represents the identifier of the Individual IMS Session resource.
required: true
schema:
type: string
get:
summary: Retrieve an existing Individual IMS Session resource.
operationId: GetIndImsSession
tags:
- Individual IMS Session (Document)
responses:
'200':
description: >
OK. The requested "Individual IMS Session" resource is successfully returned in the
response body.
content:
application/json:
schema:
$ref: '#/components/schemas/ImsSession'
'307':
$ref: 'TS29122_CommonData.yaml#/components/responses/307'
'308':
$ref: 'TS29122_CommonData.yaml#/components/responses/308'
'400':
$ref: 'TS29122_CommonData.yaml#/components/responses/400'
'401':
$ref: 'TS29122_CommonData.yaml#/components/responses/401'
'403':
$ref: 'TS29122_CommonData.yaml#/components/responses/403'
'404':
$ref: 'TS29122_CommonData.yaml#/components/responses/404'
'406':
$ref: 'TS29122_CommonData.yaml#/components/responses/406'
'429':
$ref: 'TS29122_CommonData.yaml#/components/responses/429'
'500':
$ref: 'TS29122_CommonData.yaml#/components/responses/500'
'503':
$ref: 'TS29122_CommonData.yaml#/components/responses/503'
default:
$ref: 'TS29122_CommonData.yaml#/components/responses/default'
put:
summary: Update an existing Individual IMS Session resource.
operationId: UpdateIndImsSession
tags:
- Individual IMS Session (Document)
requestBody:
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/ImsSession'
responses:
'200':
description: >
OK. The Individual IMS Session resource is successfully updated and a representation
of the updated resource is returned in the response body.
content:
application/json:
schema:
$ref: '#/components/schemas/ImsSession'
'204':
description: >
No Content. The Individual IMS Session Management resource is
successfully updated and no content is returned in the response body.
'307':
$ref: 'TS29122_CommonData.yaml#/components/responses/307'
'308':
$ref: 'TS29122_CommonData.yaml#/components/responses/308'
'400':
$ref: 'TS29122_CommonData.yaml#/components/responses/400'
'401':
$ref: 'TS29122_CommonData.yaml#/components/responses/401'
'403':
$ref: 'TS29122_CommonData.yaml#/components/responses/403'
'404':
$ref: 'TS29122_CommonData.yaml#/components/responses/404'
'409':
$ref: 'TS29122_CommonData.yaml#/components/responses/409'
'411':
$ref: 'TS29122_CommonData.yaml#/components/responses/411'
'413':
$ref: 'TS29122_CommonData.yaml#/components/responses/413'
'415':
$ref: 'TS29122_CommonData.yaml#/components/responses/415'
'429':
$ref: 'TS29122_CommonData.yaml#/components/responses/429'
'500':
$ref: 'TS29122_CommonData.yaml#/components/responses/500'
'503':
$ref: 'TS29122_CommonData.yaml#/components/responses/503'
default:
$ref: 'TS29122_CommonData.yaml#/components/responses/default'
patch:
summary: Modify an existing Individual IMS Session resource.
operationId: ModifyIndImsSession
tags:
- Individual IMS Session
requestBody:
required: true
content:
application/json-patch+json:
schema:
type: array
items:
$ref: 'TS29571_CommonData.yaml#/components/schemas/PatchItem'
minItems: 1
responses:
'200':
description: >
OK. The Individual IMS Session resource is successfully modified and a representation
of the modified resource is returned in the response body.
content:
application/json:
schema:
$ref: '#/components/schemas/ImsSession'
'204':
description: >
No Content. The concerned Individual IMS Session resource was successfully modified.
'307':
$ref: 'TS29122_CommonData.yaml#/components/responses/307'
'308':
$ref: 'TS29122_CommonData.yaml#/components/responses/308'
'400':
$ref: 'TS29122_CommonData.yaml#/components/responses/400'
'401':
$ref: 'TS29122_CommonData.yaml#/components/responses/401'
'403':
$ref: 'TS29122_CommonData.yaml#/components/responses/403'
'404':
$ref: 'TS29122_CommonData.yaml#/components/responses/404'
'411':
$ref: 'TS29122_CommonData.yaml#/components/responses/411'
'413':
$ref: 'TS29122_CommonData.yaml#/components/responses/413'
'415':
$ref: 'TS29122_CommonData.yaml#/components/responses/415'
'429':
$ref: 'TS29122_CommonData.yaml#/components/responses/429'
'500':
$ref: 'TS29122_CommonData.yaml#/components/responses/500'
'503':
$ref: 'TS29122_CommonData.yaml#/components/responses/503'
default:
$ref: 'TS29122_CommonData.yaml#/components/responses/default'
delete:
summary: Delete an existing Individual IMS Session resource.
operationId: DeleteIndImsSession
tags:
- Individual IMS Session (Document)
responses:
'204':
description: >
No Content. The Individual IMS Session resource is successfully deleted.
'307':
$ref: 'TS29122_CommonData.yaml#/components/responses/307'
'308':
$ref: 'TS29122_CommonData.yaml#/components/responses/308'
'400':
$ref: 'TS29122_CommonData.yaml#/components/responses/400'
'401':
$ref: 'TS29122_CommonData.yaml#/components/responses/401'
'403':
$ref: 'TS29122_CommonData.yaml#/components/responses/403'
'404':
$ref: 'TS29122_CommonData.yaml#/components/responses/404'
'409':
$ref: 'TS29122_CommonData.yaml#/components/responses/409'
'429':
$ref: 'TS29122_CommonData.yaml#/components/responses/429'
'500':
$ref: 'TS29122_CommonData.yaml#/components/responses/500'
'503':
$ref: 'TS29122_CommonData.yaml#/components/responses/503'
default:
$ref: 'TS29122_CommonData.yaml#/components/responses/default'
components:
securitySchemes:
oAuth2ClientCredentials:
type: oauth2
flows:
clientCredentials:
tokenUrl: '{tokenUrl}'
scopes: {}
schemas:
#
# STRUCTURED DATA TYPES
#
ImsSession:
description: Represents the IMS Session Information.
type: object
properties:
afId:
type: string
imsSessionInfo:
$ref: 'TS29175_Nimsas_ImsSessionManagement.yaml#/components/schemas/ImsSessionInfo'
suppFeat:
$ref: 'TS29571_CommonData.yaml#/components/schemas/SupportedFeatures'
required:
- afId
- imsSessionInfo
#
# SIMPLE DATA TYPES
#
#
# ENUMERATIONS
#