Complete Protocol dictionary, glossary and reference
IISP: Interim Inter-switch Signaling Protocol
Interim Inter-switch Signaling Protocol (IISP) is an ATM signaling protocol that provides static routing in ATM networks. It is a subset of the ATM NNI (Network-to-Network Interface) specification in which administrators need to manually configure routes. IISP, formerlly called PNNI 0, was an interim solution until PNNI Phase 1 is completed.