WSI: Pub/Sub

PortSIP PBX offers a Pub/Sub mechanism using WebSocket (PortSIP WSI). This allows users to subscribe to PBX events in any programming language. When subscribed events occur, PortSIP PBX automatically pushes event messages to subscribers in JSON format.

Support version: v16.0 or higher

Service Port

The PortSIP PBX/UCaaS provides WSI on port 8887 over WSS, the server must be allowed this port on the firewall for TCP, which requires WSS(TLS).

Server URL

The WSI Server URL varies between PortSIP PBX versions:

  • v22.0 or higher: wss://pbx.portsip.com:8887/wsi

  • v16.x: wss://pbx.portsip.com:8885

The WebSocket client application needs to connect to the appropriate URL. Please replace pbx.portsip.com it with your actual PBX domain.

Topics and Message Type

PortSIP PBX provides the below topics and keys for the Pub/Sub.

extension_management_events

PBX System Administrators and Tenant Administrators can subscribe to the extension_management_events topic. Once subscribed, they'll receive real-time notifications whenever an extension is added, updated, or deleted.:

  • System Administrator: Receive the extension management events of all tenants.

  • Tenant Administrator: Receive the extension management events of the tenant.

The following message keys are included:

  • event_type: Indicates the specific event:

    • extension_created

    • extension_updated

    • extension_destroyed

  • extension_number: The extension number.

  • disp_name: The display name of the extension.

  • email: The email of the extension.

  • extension_id: The ID of the extension.

  • tenant_id: The ID of the tenant associated with the extension.

{
  "event_type": "extension_created",
  "extension_number": "1001",
  "disp_name": "Jason Wek",
  "email": "test@test.com",
  "extension_id": "823634238409396",
  "tenant_id": "883634229655633920"
}

The extension_updated event includes a enabled key that indicates the current status of the extension, which can be either true or false.

{
  "event_type": "extension_updated",
  "extension_number": "1001",
  "disp_name": "Jason Wek",
  "email": "test@test.com",
  "extension_id": "823634238409396",
  "tenant_id": "883634229655633920"
  "enabled" : true
}

extension_events

All extension-related event messages will be published under extension_events. The following are the various message keys:

extension_status

This message will be returned under the following scenarios:

  • Upon successful subscription to an extension.

  • When a subscribed extension comes online.

  • When a subscribed extension goes offline.

{
  "event_type": "extension_status",
  "status": [
    {
      "extension": "sip:101@test.io",
      "extension_id": "794493219508322304",
      "call_status": "ON_ACLL",
      "online": false,
      "presence" : "AWAY",
      "presence_note": "",
      "push_online": false,
      "time": "1704186780"
    },
    {
      "extension": "sip:102@test.io",
      "extension_id": "794493219718037504",
      "call_status": "ON_CALL",
      "online": false,
      "presence" : "AVAILABLE",
      "presence_note": "",
      "push_online": false,
      "time": "1704186780"
    }
  ],
  "tenant_id": "794493068765036544"
}

The message is in JSON format and includes the following fields:

  • event_type: Indicates the type of the message.

  • tenant_id: Represents the ID of the tenant to which the extension belongs.

  • status: It's a JSON array that includes the extension status, including the following fields:

    • extension: Represents the SIP URI of the extension.

    • presence: the presence status with the enum string:

      • DO_NOT_DISTURB

      • AVAILABLE

      • AWAY

      • BUSINESS_TRIP

      • LUNCH

    • presence_note: Contains the text of the additional presence status.

    • call_status: The "ON_CALL" status signifies that the extension is currently engaged in a call. The "RINGING" status means that the extension is currently receiving a call and is ringing. If this value is empty, it indicates that the extension is not involved in any call.

    • online: Indicates whether the extension is currently registered to the PBX.

    • push_online: This field indicates whether mobile push notifications are currently enabled for the extension. This is only valid if online is false.

    • extension_id: Represents the ID of the extension.

    • time: Represents the timestamp of this message in UNIX time.

extension_call

This message will be returned under the following scenarios:

  • When an extension starts dialing a call.

  • When an extension receives a call.

  • When an extension disconnects a call.

{
  "event_type": "extension_call",
  "extension": "sip:101@test.io",
  "call_status": "ON_CALL",
  "tenant_id": "792406615960584192",
  "extension_id": "792406615960584220",
  "time": "1703690276"
}

The message is in JSON format and includes the following fields:

  • event_type: Indicates the type of the message.

  • extension: Represents the SIP URI of the extension.

  • call_status: The "ON_CALL" status signifies that the extension is currently engaged in a call. The "RINGING" status means that the extension is currently receiving a call and is ringing. If this value is empty, it indicates that the extension is not involved in any call.

  • tenant_id: Represents the ID of the tenant to which the extension belongs.

  • extension_id: Represents the ID of the extension.

  • time: Represents the timestamp of this message in UNIX time.

extension_presence

This message will be returned under the following scenario:

  • When an extension changes its presence status.

{
  "event_type": "extension_presence",
  "extension": "sip:101@test.io",
  "presence" : "AVAILABLE",
  "presence_note": "Drving",
  "tenant_id": "792406615960584192",
  "extension_id": "792406615960584220",
  "time": "1703690547"
}

The message is in JSON format and includes the following fields:

  • event_type: Indicates the type of the message.

  • extension: Represents the SIP URI of the extension.

  • presence: the presence status with the enum string:

    • DO_NOT_DISTURB

    • AVAILABLE

    • AWAY

    • BUSINESS_TRIP

    • LUNCH

  • presence_note: Contains the text of the presence status.

  • tenant_id: Represents the ID of the tenant to which the extension belongs.

  • extension_id: Represents the ID of the extension.

  • time: Represents the timestamp of this message in UNIX time.

extension_agent_status

When an extension, is also an agent of the queue, who belongs to a queue to which a subscription has been made, changes their status within any of the queues they are associated with, a notification will be sent to the subscriber.

{
  "agent_status": [
    {
      "queue_number": "8002",
      "status": "READY"
    }
  ],
  "event_type": "extension_agent_status",
  "extension": "sip:102@test.io",
  "extension_id": "806406815892897792",
  "tenant_id": "806406773714976768",
  "time": "1707028116"
}

The message is in JSON format and includes the following fields:

  • event_type: Indicates the type of the message.

  • extension: Represents the SIP URI of the extension.

  • tenant_id: Represents the ID of the tenant to which the extension belongs.

  • extension_id: Represents the ID of the extension.

  • time: Represents the timestamp of this message in UNIX time.

  • agent_status: A JSON array that contains the status of the queues:

    • queue_number: The extension number of the queue

    • status: the agent status of the queue

cdr_events

Once a call has ended, the CDR of this call will be pushed to the subscribers, this event means subscribing to all calls CDR of a tenant. The message topic is: cdr_events, the message key is below.

  • call_start: Once an extension receives a call, the call information will be packed in a JSON object and pushed to the subscriber.

  • call_update_info: The call information is updated, and the call information will be packed in a JSON object and pushed to the subscriber.

  • call_cdr: Once a call has ended, the CDR will be packed in a JSON object and pushed to the subscriber.

For more details about the CDR JSON object structure information, please refer to Event Reference.

queue_management_events

The tenant Admin and Queue Manager have permission to subscribe to the queue_management_events. Once successfully subscribed, the PBX will push all current queue information to the subscriber. After that, during the subscription, whenever a queue is updated, deleted, or added, the subscriber will receive the queue information in real-time.

Below are the message keys.

  • event_type: Indicates the event type, it can have the following values:

    • queue_created

    • queue_updated

    • queue_destroy

  • queue_number: The extension number of the queue.

  • tenant_id: The ID of the tenant which this queue is belongs.

{
  "event_type": "queue_created",
  "queue_number": "8800",
  "tenant_id": "883634229655633920"
}

queue_events

Once the queue status is changed, for example, the caller who is in the queue has hung up the call, or the caller who is in the queue is answered by an agent, the related status information will be pushed to the subscribers. The message topic is queue_events.

Below are the message keys.

  • queue_status: If a subscriber successfully subscribed to queue events, the PBX will push the queue’s current status to the subscriber for all waiting for callers and agents. The type indicates that the waiting caller is active or is scheduled for a callback. The state of the agent can have the following values:

    • Ready: The agent is ready to accept ACD calls.

    • Queue Call: The agent is on an ACD call.

    • Wrap Up: The agent is in ACW (After Call Work).

    • Other Call: The agent is on a non-ACD call.

    • Not Ready: The agent is not ready to accept ACD calls.

    • Logout: The agent has logged out from the queue.

    • Offline: The agent is offline.

{
   "event_type":"queue_status",
   "tenant_id":"676398719834259456",
   "queue_id":"677046776364007424",
   "queue_number":"8001",
   "queue_name":"Sales Department",
   "waiting_list":[
      {
         "position": "2",
         "session_id": "6763987198342",
         "caller_number" : "123456",
         "caller_name":"Thomas Young",
         "timestamp":"1676206249",
         "type" : "normal/callback"
      }，
   "agents":[
      {
         "state":"QUEUE_CALL",
         "agent_extension_number" : "101",
         "session_id" : "677046776364007",
         "caller_number" : "123456",
         "caller_name":"Thomas Young",
         "timestamp":"1676206249"
      }
   ]
   ]
}

  • queue_caller_status: if the waiting callers of a queue were changed, the PBX will push the queue_caller_status event in JSON format to the subscribers. The reason can be:

    • enqueue: This caller has just connected with the queue and is now on the waiting list.

    • agent_answered: The caller left the queue since it was answered by an agent.

    • overflow: The caller reached the maximum waiting time of the queue and was forwarded to the overflow destination.

    • hangup: The caller hung up.

    • callback: The caller has successfully scheduled a callback.

{
   "event_type":"queue_caller_status",
   "tenant_id":"676398719834259456",
   "queue_id":"677046776364007424",
   "updated_callers":[
      {
         "position": "2",
         "session_id": "6763987198342",
         "caller_number" : "123456",
         "reason" : "enqueue/agent_answered/overflow/hangup/callback",
         "timestamp":"1676206249",
         "type" : "normal/callback"
      }
   ]
}

  • queue_agent_status: If an agent’s status in the queue changes, or a new agent is added to the queue, or an existing agent is removed from the queue, the PBX will push the queue_agent_status event in JSON format to the subscribers. The removed_agents field indicates the agents that have been newly removed from the queue.

{
   "event_type" : "queue_agent_status",
   "queue_id" : "677046776364007424",
   "tenant_id" : "676398719834259456",
   "updated_agents":[
      {
         "state":"QUEUE_CALL",
         "agent_extension_number" : "101",
         "session_id" : "677046776364007",
         "caller_number" : "123456",
         "caller_name":"Thomas Young",
         "timestamp":"1676206249"
      }
   ],
   "removed_agents":[
      {
         "agent_extension_number" : "102"
      }
      ]
}

  • queue_sla_breached: If a caller is waiting in the queue and the SLA is breached, the PBX will push a notification to subscribers in JSON format indicating that the queue SLA has been breached.

{
   "event_type" : "queue_sla_breached",
   "queue_id" : "677046776364007424",
   "tenant_id" : "676398719834259456",
   "caller" : "00431334081002",
   "total_callers_breached" : 6,
   "sla_time_secs" : 90,
   "waiting_callers" : 100,
   "timestamp":"1676206249"
}

Authentication

Once connected to the WSI server, use the following JSON message to authenticate:

PBX System Administrator Authentication

{
"command":"auth",
"username":"admin",
"password":"A1s2d3f4",
}

The system administrator can currently subscribe only to extension management events. To subscribe to other events, a Tenant Admin or Queue Manager is required.

Tenant Admin Authentication

Tenant administrators can authenticate using either username/password or extension number/extension password.

Authenticate with Username

{
"command":"auth",
"username":"testuser1",
"password":"A1s2d3f4",
"domain" : "test.io"
}

The domain is the SIP domain of the extension, the password is the user password of extension.

Authenticate with Extension Number

You can authenticate using the SIP extension number and its corresponding password as well.

{
"command":"auth",
"extension_number":"101",
"password":"A1s2d3f4",
"domain" : "test.io"
}

If there is no error, the response is as follows:

{
  "command": "auth",
  "id": "1",
  "status": 0
}

Otherwise, the response includes errors as below:

{
  "command": "auth",
  "error": "access_token , username , domain or password error",
  "id": "2",
  "status": -1
}

Subscribe and Unsubscribe

After successful authentication, the user can subscribe to events.

Subscribe to the Extension Event

To subscribe to events for specific extensions, send the following command:

{
   "command":"subscribe",
   "topics":[
      "extension_events"
   ],
   "extensions":[
      "102",
      "103"
   ]
}

Subscribe to CDR Event

To subscribe to Call Detail Record (CDR) events, send the following command:

{
   "command":"subscribe",
   "topics":[
      "cdr_events"
   ]
}

Subscribe Queue Event

Subscription Limitations

  • Extension-Specific Subscriptions: Extensions can only subscribe to queues that they belong to or manage. If an extension is not an agent or queue manager of a queue, it cannot subscribe to that queue's events.

  • Tenant Admin and Queue Manager Permissions: Tenant Admin and Queue Manager users have the permission to subscribe to any queue wiin a tenant.

Example:

Example:

If extension 101 is an agent or queue manager of queues 8001 and 8002, and it subscribes to queue events using the following command:

{
   "command":"subscribe",
   "topics":[
      "queue_events"
   ],
   "queues":[
      "8001",
      "8002"
   ]
}

Subscribe to Queue Management Event

Tenant Admin and Queue Manager users can subscribe to the queue_management_events event.

{
   "command":"subscribe",
   "topics":[
      "queue_management_events"
   ]
}

Subscribe to Extension Management Event

PBX System Administrators and Tenant Administrators can subscribe to extension management events using the following JSON command:

{
   "command":"subscribe",
   "topics":[
      "extension_management_events"
   ]
}

To unsubscribe from a topic, send the following request:

{
   "command":"unsubscribe",
   "topics":[
      "extension_management_events"
   ]
}

Unsubscribe

To unsubscribe from all events, send the following command:

{
   "command":"unsubscribe",
   "topics":[
      "queue_events"
   ],
   "queues":[
      "8001",
      "8002"
   ]
}
{
   "command":"unsubscribe",
   "topics":[
      "extension_events"
   ],
   "extensions":[
      "101",
      "102"
   ]
}

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