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[Home](./index.md) &gt; [sip.js](./sip.js.md) &gt; [Transport](./sip.js.transport.md) &gt; [disconnect](./sip.js.transport.disconnect.md)

## Transport.disconnect() method

Disconnect from network.

<b>Signature:</b>

```typescript
disconnect(): Promise<void>;
```
<b>Returns:</b>

`Promise<void>`

## Remarks


```txt
- If `state` is "Connecting", `state` MUST transition to "Disconnecting" before returning.
- If `state` is "Connected", `state` MUST transition to "Disconnecting" before returning.
- If `state` is "Disconnecting", `state` MUST NOT transition before returning.
- If `state` is "Disconnected", `state` MUST NOT transition before returning.
- The `state` MUST transition to "Disconnected" before resolving (assuming `state` is not already "Disconnected").
- The `state` MUST transition to "Connecting" or "Connected" before rejecting and MUST reject with an Error.

```
Resolves when the transport disconnects. Rejects if transport fails to disconnect. Rejects with [StateTransitionError](./sip.js.statetransitionerror.md) if a loop is detected. In particular, callbacks and emitters MUST NOT call this method synchronously.