simplex

1490 nm, and video at 1550 nm. The upstream transmissions are supported in the 1260–1360 nm window, with voice and data supported at 1310 nm. See also downstream, duplex, FOTS, nm, PON, upstream, wavelength, and window. 3. In telegraphy, a single channel circuit that supports transmission in one direction, only. See also channel, circuit, diplex, quatraplex, SMF, and telegraph.

• service-oriented architecture (SOA)
• service profile identification (SPID)
• service set identifier (SSID)
• service switching point (SSP)
• Sesame (Secure European System for Applications in a Multivendor Environment)
• session
• Session Description Protocol (SDP)
• Session Initiation Protocol (SIP)
• Session Initiation Protocol (SIP) for Instant Messaging and Presence Leveraging Extensions (SIMPLE)
• Session Layer
• set handler
• set-top box
• severely errored cell block ratio (SECBR)
• SFTP (Shielded Foil Twisted Pair)
• SGCP (Simple Gateway Control Protocol)
• SGML (Standard Generalized Markup Language)
• Shannon, Claude Elwood (1916–2001)
• Shannon, Claude Elwood (1916–2001)
• Shannon, Claude Elwood (1916–2001)
• Shannon’s Law
• shared bus switch
• Shared Registry System (SRS)
• SHDSL (Symmetric High-bit-rate Digital Subscriber Line)
• sheath
• SHF (Super High Frequency)