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POST
/
v1
/
sip
/
discover
Discover SIP Endpoint
curl --request POST \
  --url https://api.bland.ai/v1/sip/discover \
  --header 'Content-Type: application/json' \
  --header 'authorization: <authorization>' \
  --data '
{
  "host": "<string>",
  "port": 123,
  "transport": "<string>"
}
'
{
  "data": {
    "discovery_id": "disc_abc123",
    "status": "completed",
    "host": "sip.example.com",
    "resolved_addresses": ["203.0.113.10"],
    "srv_records": [],
    "attempts": [
      {
        "port": 5060,
        "transport": "udp",
        "response_time_ms": 45,
        "response_code": 200,
        "user_agent": "Asterisk PBX 18.0.0"
      }
    ],
    "recommended": {
      "port": 5060,
      "transport": "udp",
      "detected_system": "Asterisk",
      "codecs": ["PCMU", "PCMA", "G.722"],
      "methods": ["INVITE", "ACK", "BYE", "CANCEL", "OPTIONS"]
    },
    "started_at": "2026-03-09T12:00:00Z",
    "completed_at": "2026-03-09T12:00:05Z"
  },
  "errors": null
}

Documentation Index

Fetch the complete documentation index at: https://docs.bland.ai/llms.txt

Use this file to discover all available pages before exploring further.

​
Headers

​
authorization
string
required
Your API key for authentication.

​
Body

​
host
string
required
The hostname or IP address of your SIP endpoint.
​
port
number
Specific port to probe. If omitted, ports 5060, 5061, and 5080 are tested.
​
transport
string
Specific transport to test: "udp", "tcp", or "tls". If omitted, both UDP and TCP are tested.

​
Response

​
discovery_id
string
Unique identifier for this discovery session.
​
status
string
Discovery status: "running", "completed", or "failed".
​
host
string
The host that was probed.
​
resolved_addresses
array
IP addresses resolved from DNS A/AAAA lookups.
​
srv_records
array
SRV records found for _sip._udp, _sip._tcp, _sips._tcp.
​
attempts
array
Details of each probe attempt including port, transport, response time, response code, and user agent.
​
recommended
object
Recommended connection settings: port, transport, user_agent, detected_system (e.g., “Asterisk”, “FreeSWITCH”, “Kamailio”), codecs, and methods.
Only one discovery can run per organization at a time. Discovery results are cached for 10 minutes.
Example Request
curl -X POST https://api.bland.ai/v1/sip/discover \
  -H "Authorization: Bearer <token>" \
  -H "Content-Type: application/json" \
  -d '{
    "host": "sip.example.com"
  }'

{
  "data": {
    "discovery_id": "disc_abc123",
    "status": "completed",
    "host": "sip.example.com",
    "resolved_addresses": ["203.0.113.10"],
    "srv_records": [],
    "attempts": [
      {
        "port": 5060,
        "transport": "udp",
        "response_time_ms": 45,
        "response_code": 200,
        "user_agent": "Asterisk PBX 18.0.0"
      }
    ],
    "recommended": {
      "port": 5060,
      "transport": "udp",
      "detected_system": "Asterisk",
      "codecs": ["PCMU", "PCMA", "G.722"],
      "methods": ["INVITE", "ACK", "BYE", "CANCEL", "OPTIONS"]
    },
    "started_at": "2026-03-09T12:00:00Z",
    "completed_at": "2026-03-09T12:00:05Z"
  },
  "errors": null
}
Docs for agents: llms.txt