Cisco Expressway Registrations API

openapi: 3.2.0
info:
  title: Cisco Expressway Configuration Admin Account Registrations API
  description: RESTful API for configuring and managing Cisco Expressway systems including zones, search rules, transforms, DNS servers, NTP servers, SFTP configuration, system upgrades, and admin account management. The API uses JSON Schema version 4 for request and response schemas and is self-documented via RAML definitions available at /api/raml on the Expressway system. All endpoints require HTTPS and HTTP Basic Authentication using Expressway administrator credentials.
  version: 14.2.0
  contact:
    name: Cisco TAC
    email: tac@cisco.com
    url: https://www.cisco.com/c/en/us/support/unified-communications/expressway-series/tsd-products-support-series-home.html
  license:
    name: Cisco EULA
    url: https://www.cisco.com/c/en/us/about/legal/cloud-and-software/end_user_license_agreement.html
  x-logo:
    url: https://www.cisco.com/c/dam/en/us/products/collateral/unified-communications/expressway-series/datasheet-c78-733751.jpg
  x-provenance:
    method: derived
    authored_by: API Evangelist
    derived_on: '2026-08-19'
    first_party: false
    provider_published: false
    source: Modelled from the provider's public HTML documentation.
    note: 'Not published by the provider. Probed 2026-08-19: no anonymously fetchable first-party contract. Served by each customer''s own Expressway appliance; no central spec.'
servers:
- url: https://{host}/api
  description: Cisco Expressway server
  variables:
    host:
      default: expressway.example.com
      description: The FQDN or IP address of the Cisco Expressway node. The API is only accessible via HTTPS.
security:
- basicAuth: []
tags:
- name: Registrations
  description: Device registration status and details
paths:
  /status/common/registrations:
    get:
      operationId: listRegistrations
      summary: Cisco Expressway List all current registrations
      description: Retrieves the list of all devices and endpoints currently registered with the Expressway, organized by device alias. Includes registration type (SIP or H.323), contact address, and registration timestamp.
      tags:
      - Registrations
      responses:
        '200':
          description: Registration list retrieved successfully
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Registration'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
components:
  responses:
    Forbidden:
      description: The authenticated user does not have sufficient permissions for this operation.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Unauthorized:
      description: Authentication credentials are missing or invalid. The API requires HTTP Basic Authentication with administrator credentials over HTTPS.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    Registration:
      type: object
      description: A registered device or endpoint
      properties:
        Alias:
          type: string
          description: Registered alias of the device
          examples:
          - user1@example.com
        Type:
          type: string
          description: Registration protocol type
          enum:
          - SIP
          - H.323
        ContactAddress:
          type: string
          description: Network contact address of the device
          examples:
          - 192.168.1.100:5060
        RegisteredAt:
          type: string
          format: date-time
          description: Timestamp when the device registered
        ExpiresAt:
          type: string
          format: date-time
          description: Timestamp when the registration expires
        DeviceType:
          type: string
          description: Type of registered device
          examples:
          - Cisco CE Software
        Subzone:
          type: string
          description: Subzone where the device is registered
          examples:
          - DefaultSubzone
    Error:
      type: object
      description: Standard error response from the Expressway API
      properties:
        error:
          type: string
          description: Error code or type
        message:
          type: string
          description: Human-readable error description
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: HTTP Basic Authentication using Expressway administrator credentials. The API is only accessible via HTTPS.
externalDocs:
  description: Cisco Expressway REST API Summary Guide (X14.2)
  url: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/admin_guide/X14-2/rest-api/exwy_b_cisco-expressway-rest-api-summary-guide--x142/exwy_m_using-the-expressway-rest-api.html