RAS

1. Registration/Admission/Status. In H.323-compliant multimedia networks, the protocol that supports communications between terminals (i.e., endpoint devices) and the gatekeeper. See also H.323, gatekeeper, multimedia, and terminal. 2. Remote Access Server. A host computer on a local area network (LAN) and equipped with modems to serve the needs of end users for dial-up access to internal computer resources through the public switched telephone network (PSTN).An RAS also can take the form of purpose-built hardware with either integral modems or ISDN interfaces. An RAS generally is associated with a Remote Authentication Dial-In User Service (RADIUS) server that performs authentication, authorization, and accounting functions to ensure network security. See also authentication, authorization, ISDN, LAN, modem, NAS, PSTN, RADIUS, and security.

• Enhanced Variable Rate Vocoder (EVRC)
• ensure
• Enterprise Computer Telephony Forum (ECTF)
• Enterprise Network (EN)
• Enterprise Systems Connection (ESCON)
• entomology
• entropy (S)
• ENUM (Electronic NUMber)
• EOC (Embedded Operations Channel)
• EPABX (Electronic Private Automatic Branch Exchange)
• EPON (Ethernet-based Passive Optical Network)
• EQEEB (Equivalent Queue Extended Erlang B)
• equal access
• equal access trunk
• equalization
• equilibrium mode distribution
• Equivalent Queue Extended Erlang B (EQEEB)
• E-rate Program
• erbium-dope fiber amplifier (EDFA)
• erbium (Er)
• Erlang
• Erlang, A. K. (1878–1929)
• Erlang B
• Erlang B
• Erlang B