> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vobiz.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Simultaneous dialing

> Dial several Vobiz destinations simultaneously with User and Number children - the first endpoint to answer connects, the rest are dropped instantly.

This example uses three User and Number elements to dial two SIP endpoints and a phone number at the same time. The first of these calls to answer will be connected to the caller, and the rest of the connection attempts will be canceled.

\*\*Note:\*\*In Simultaneous dialing, the maximum number of destinations (Endpoint or number) that can passed is 10

## Example

### Response

```xml theme={null}
<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Dial action="https://your-domain.com/dial_action/" method="POST">
      <User>sip:alice1234@registrar.vobiz.ai</User>
      <Number>15671234567</Number>
      <User>sip:john1234@registrar.vobiz.ai</User>
    </Dial>
</Response>
```

**Tip:** To control the number shown to every destination in the ring group, add the `callerId` attribute to the `Dial` element - for example `<Dial callerId="+14155551234">`. If omitted, the current caller's caller ID is used. See [Transfer a Call](/call/transfer-call) for more on the `Dial` element.