cipher

A system of secret writing based on a set of rules for encrypting or encoding data, converting plain text into symbolic code that can be interpreted only with the key to the code. A cipher is used to secure information against unauthorized use.

• Table S-2: SONET/SDH Signal Hierarchy
• Table T-1: North American Digital Hierarchy: T-carrier
• Table T-2: TCP/IP Protocol Suite
• Table V-1: Electromagnetic Signal Propagation Velocity (Approximate)
• Table V-2: Vertical Redundancy Check (VRC)
• Table V-3: Selected ITU-T V-Series Recommendations
• Table W-1: ITU-T Transmission Windows
• Table X-1: DSL Technology Comparisons
• Table X-2: ITU-T X Series Recommendation Groups
• Table X-3: Select X Series Recommendations
• TACS (Total Access Communications System)
• Tagged Image File Format-Fax (TIFF-F)
• Tagged Image File Format (TIFF)
• tail circuit
• talk battery
• talk path
• tandem switch
• tap
• TAPI (Telephony Application Programming Interface)
• taps
• tariff
• TASI (Time-Assignment Speech Interpolation)
• TA (Terminal Adapter)
• Tbps
• TB (TeraByte)