[Home](./index.md) > [sip.js](./sip.js.md) > [SessionDelegate](./sip.js.sessiondelegate.md) > [onNotify](./sip.js.sessiondelegate.onnotify.md) ## SessionDelegate.onNotify() method Receive NOTIFY request. https://tools.ietf.org/html/rfc6665\#section-4.1.3 Signature: ```typescript onNotify?(request: IncomingNotifyRequest): void; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | request | IncomingNotifyRequest | Incoming NOTIFY request. | Returns: `void`