[Home](./index.md) > [sip.js](./sip.js.md) > [OutgoingSubscribeRequest](./sip.js.outgoingsubscriberequest.md) > [delegate](./sip.js.outgoingsubscriberequest.delegate.md) ## OutgoingSubscribeRequest.delegate property Delegate providing custom handling of this outgoing SUBSCRIBE request. Signature: ```typescript delegate?: OutgoingSubscribeRequestDelegate; ```