[Home](./index.md) > [sip.js](./sip.js.md) > [InvitationProgressOptions](./sip.js.invitationprogressoptions.md) > [sessionDescriptionHandlerOptions](./sip.js.invitationprogressoptions.sessiondescriptionhandleroptions.md) ## InvitationProgressOptions.sessionDescriptionHandlerOptions property Options to pass to SessionDescriptionHandler's getDescription() and setDescription(). Signature: ```typescript sessionDescriptionHandlerOptions?: SessionDescriptionHandlerOptions; ```