[Home](./index.md) > [sip.js](./sip.js.md) > [SessionInviteOptions](./sip.js.sessioninviteoptions.md) > [requestDelegate](./sip.js.sessioninviteoptions.requestdelegate.md) ## SessionInviteOptions.requestDelegate property See `core` API. Signature: ```typescript requestDelegate?: OutgoingRequestDelegate; ```