Create SIP Trunk - DialNexa Documentation

Changes state - verify before retry Links an organization-owned SIP trunk phone number for outbound/inbound calling. This is NOT a read-only action. Only call this after the user has provided real SIP termination details — never as a guess or with placeholder values.

Parameters

Name	Type	Required	Description
`phone_number`	`string`	Yes	E.164 phone number, e.g. +14155552671
`termination_uri`	`string`	Yes	SIP termination host[:port], e.g. example.zt.provider.com:5060 — no sip: prefix
`sip_trunk_username`	`string`	No	SIP authentication username
`sip_trunk_password`	`string`	No	SIP authentication password (stored encrypted)
`nickname`	`string`	No	Display nickname for this trunk

Before you call

Connect and initialize the MCP client with OAuth or an API key for the intended workspace.
Provide the required parameters: phone_number, termination_uri.

Example MCP request

Send tools/call after your client completes MCP initialization. Replace placeholder values with IDs and inputs from your workspace. For object and array parameters, follow the nested requirements in the parameter description instead of treating an empty value as complete.

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "create_sip_trunk",
    "arguments": {
      "phone_number": "+919876543210",
      "termination_uri": "VALUE"
    }
  }
}

The server returns one text content block. Parse content[0].text as JSON when the tool succeeds. See MCP responses and errors for the full envelope and failure behavior.

Verify the result

Confirm the response is not marked isError. Call List Organization Phone Numbers to read the affected resource. Verify that the intended state is visible before making another change.

Retry safety

This tool changes workspace state. After a timeout, read the affected resource before retrying so you do not create duplicate or conflicting changes.

List Organization Phone Numbers: list_organization_phone_numbers