[Home](./index.md) > [sip.js](./sip.js.md) > [UserAgentCoreDelegate](./sip.js.useragentcoredelegate.md) > [onNotify](./sip.js.useragentcoredelegate.onnotify.md) ## UserAgentCoreDelegate.onNotify() method DEPRECATED. Receive NOTIFY request. Signature: ```typescript onNotify?(request: IncomingNotifyRequest): void; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | request | IncomingNotifyRequest | | Returns: `void`