Electric fields Computer networks Numerical calculations Packet switching (Data transmission) Algorithms Bit error rate (BER) Block error rate (BLER) Caller ID telephone service Ciphers Coding theory Digital communications Distribution (Probability theory) Electric waves Electronic data interchange Electronic file management Email systems Error rates File transfer (Computer science) Mathematical formulas Multi-channel Memorandum Distribution Facility (MMDF) Network routers Noise Quantization (Physics) Rewards, prizes etc Signal detection Statistical analysis TCP/IP Telephone Telephone numbers Vector analysis