# Inbound calls

Send calls to your number to your own SIP address.

When someone calls your Vonyx number, Vonyx forwards the call to the **inbound address** on the trunk the number is attached to.

1. Open the trunk in **SIP Trunks**.
2. Turn on **Inbound calls**.
3. Enter your **Inbound address**.

The inbound address is a host, with an optional port:

```text
sip.example.com
sip.example.com:5060
```

Leave out `sip:` and any user part. Vonyx sends the call over UDP, with the called number as `91XXXXXXXXXX`. Your server must accept SIP over UDP from `43.204.9.41` and RTP on ports `10000–20000`.

<Callout>
  Each integration guide lists the exact inbound address for that platform.
</Callout>