## Assign or clear a phone number's SIP profile

**put** `/v3/phone-numbers/{phoneNumber}/sip-profile`

## SIP configuration

Your Linq representative provides the signaling and media IP ranges and
ports to allow through your firewall during onboarding.

Set `primary_uri` to your endpoint as scheme + host — `sips:` for TLS or
`sip:` for UDP, with no user part (we add it). Each call arrives at your
endpoint as:

```
sip:<called-number>@<your-host>
```

so you can route on the dialed number. The caller's number is in the
`From` header in E.164.

---

Assign a SIP profile to route inbound calls to its SIP URI. This takes
precedence over an existing `forwarding_number` without clearing it.
Send `sip_profile_id: null` to remove the SIP assignment and resume
existing forwarding, if configured. Allow about 5 minutes for routing
changes to propagate. The phone number must belong to the authenticated
partner.

### Path Parameters

- `phoneNumber: string`

### Body Parameters

- `sip_profile_id: string`

  The SIP profile to assign, or null to clear the number's current assignment.

### Returns

- `phone_number: string`

  The phone number whose assignment changed

- `sip_profile_id: string`

  The assigned SIP profile id, or null when cleared

### Example

```http
curl https://api.linqapp.com/api/partner/v3/phone-numbers/$PHONE_NUMBER/sip-profile \
    -X PUT \
    -H 'Content-Type: application/json' \
    -H "Authorization: Bearer $LINQ_API_V3_API_KEY" \
    -d '{
          "sip_profile_id": "sip_8a3f9c2b1d4e4f5a9b8c7d6e5f4a3b2c"
        }'
```

#### Response

```json
{
  "phone_number": "+14254758217",
  "sip_profile_id": "sip_8a3f9c2b1d4e4f5a9b8c7d6e5f4a3b2c"
}
```