[Home](./index.md) > [sip.js](./sip.js.md) > [SessionDescriptionHandlerError](./sip.js.sessiondescriptionhandlererror.md) > [(constructor)](./sip.js.sessiondescriptionhandlererror._constructor_.md) ## SessionDescriptionHandlerError.(constructor) Constructs a new instance of the `SessionDescriptionHandlerError` class Signature: ```typescript constructor(message?: string); ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | message | string | |