communications switch
121Cisco Catalyst — Catalyst is the brand name for a variety of network switches sold by Cisco Systems. While commonly associated with Ethernet switches, a number of different interfaces have been available throughout the history of the brand. Cisco acquired several …
122Enigma machine — Military Enigma machine …
123Voice over Internet Protocol — (VoIP, IPAEng|vɔɪp) is a protocol optimized for the transmission of voice through the Internet or other packet switched networks. VoIP is often used abstractly to refer to the actual transmission of voice (rather than the protocol implementing… …
124WBZ-TV — Boston, Massachusetts Branding WBZ TV (general) WBZ News (newscasts) Slogan We re Listening Only WBZ TV. Channels Digital: 30 …
125DiSEqC — logo, indicating DiSEqC 2.0 compliance DiSEqC switch DiSEqC (Digital Satellite Equipment Control), pronounced …
126Diversity combining — is the technique applied to combine the multiple received signals of a diversity reception device into a single improved signal. Contents 1 Various techniques 2 Switched combining two way radio example 2.1 How signals are evaluated …
127Dell PowerConnect — PowerConnect is a Dell series of network switches. The PowerConnect classic switches are based on Broadcom or Marvell Technology Group fabric and firmware. Dell also offers the PowerConnect J series which are Juniper Networks switches and the… …
128Japanese cryptology from the 1500s to Meiji — The cipher system that Uesugi used is basically a simple substitution usually known as a Polybius square or “checkerboard.” The i ro ha alphabet contains forty eight letters, so a seven by seven square is used, with one of the cells left blank.… …
