Posted in Government & Military, Information Technology DIISP stands for Defense Intelligence Information Support Program DIISP stands for Dynamic Interim-Interswitch Signaling Protocol (Cisco) DIISP Share Pinterest Tweet Whatsapp Post navigation ACKMAACKM Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.