curl --request GET \
  --url https://api.bolna.ai/sip-trunks/trunks/{trunk_id} \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "name": "<string>",
  "provider": "<string>",
  "description": "<string>",
  "auth_type": "userpass",
  "auth_username": "<string>",
  "gateways": [
    {
      "gateway_address": "sip.zadarma.com",
      "port": 5060,
      "priority": 1
    }
  ],
  "ip_identifiers": [
    {
      "ip_address": "15.207.90.192/31"
    }
  ],
  "phone_numbers": [
    {
      "id": "<string>",
      "phone_number": "<string>",
      "name": "<string>",
      "byot_trunk_id": "<string>",
      "telephony_provider": "sip-trunk",
      "deleted": true,
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z"
    }
  ],
  "allow": "<string>",
  "disallow": "<string>",
  "transport": "<string>",
  "direct_media": true,
  "rtp_symmetric": true,
  "force_rport": true,
  "ice_support": true,
  "qualify_frequency": 123,
  "inbound_enabled": true,
  "outbound_leading_plus_enabled": true,
  "is_active": true,
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z"
}