| 1) SMDS Interface Protocol Used in communications between customer premises equipment (CPE) and Switched Multimegabit Data Service (SMDS) network equipment, it allows the CPE to use SMDS service for high-speed WAN internetworking. Based on the IEEE 802.6 DQDB standard. See also DQDB. 2) Serial Interface Processor Obsolete interface processor for Cisco 7000 series routers that provided either two or four channel-independent ports for synchronous serial connections at speeds from 2.4 Kbps to 4 Mbps. The SIP has been replaced by the FSIP. Sometimes called SX-SIP or Pre-FSIP. See also FSIP. |