null modem

Referring to a metallic wire cable used to connect two computers directly without the

use of modems. A null modem cable simply crosses the transmit and receive wires so that the wire used by one machine for signal transmission is used by the other machine for signal reception.A null modem cable can be created by manually crossing the wires. Alternatively, a null modem adapter can be used to accomplish the necessary crosslinks. (Note: A null modem is much less expensive and much prettier.) See also cable, modem, and wire.

• centimeter (cm)
• centralized attendant service (CAS)
• central office (CO)
• central office exchange code
• central office exchange (COE)
• central office prefix
• central processing unit (CPU)
• Centrex (CTX)
• centum call seconds (CCS)
• CEPT
• CEPT-1
• CEPT (Conférence Européenne des administrations des Postes et des Télécommunications)
• Cerberus
• CER (Cell Error Ratio)
• CERN
• CERN (l’Conseil Européen pour la Recherche Nucléaire)
• CERN (l’Conseil Européen pour la Recherche Nucléaire)
• CERT
• CERT (Computer Emergency Response Team)
• CERT (Computer Emergency Response Team)
• certificate authority (CA)
• Challenge Handshake Authentication Protocol (CHAP)
• channel
• channel-associated signaling (CAS)
• channel bank