[Home](./index.md) > [sip.js](./sip.js.md) > [NotifyUserAgentServer](./sip.js.notifyuseragentserver.md) > [(constructor)](./sip.js.notifyuseragentserver._constructor_.md) ## NotifyUserAgentServer.(constructor) NOTIFY UAS constructor. Signature: ```typescript constructor(dialogOrCore: Dialog | UserAgentCore, message: IncomingRequestMessage, delegate?: IncomingRequestDelegate); ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | dialogOrCore | Dialog | UserAgentCore | Dialog for in dialog NOTIFY, UserAgentCore for out of dialog NOTIFY (deprecated). | | message | IncomingRequestMessage | Incoming NOTIFY request message. | | delegate | IncomingRequestDelegate | |