chnicalPDF.com Application programs surrounded by software that enables a group of programs in the same container to work together. convergence The use of one network for voice, data, and video. CORD (Central Office Re-architected as a Data Center) Telephone companies that deploy CORD architect their central offices as data centers rather than as typical central offices. They use open source software and commodity servers and switches and software-defined networking. The goal is to be able to quickly add and delete features and services used by customers. cordless Cordless telephones provide portability, mainly within homes and apartments. core networks The portions of carrier and enterprise networks that carry the highest percentage of traffic, and where switches and routers connect to other switches and routers rather than to customers. High-speed core routers are located in core networks. CPE (Customer Premises Equipment) Telephone systems, modems, terminals, and other equipment installed at customer sites. CSU/DSU (Channel Service Unit/Data Service Unit) A digital interface device that connects customer computers, video equipment, multiplexers, and terminals to T1/E1 and T3/E3 lines. CTI (Computer Telephony Integration) www.TechnicalPDF.com CTI software translates signals between telephone systems and computers SO that telephone systems and computers can coordinate sending call routing and account information to agents in contact centers. CWDM (Coarse Wavelength-Division Multiplexing) A multiplexing technology standard that enterprises and carriers deploy to connect corporate sites to public networks and to bring the capacity of fiber closer to residential neighborhoods. It carries up to eight channels of traffic on a single fiber pair. dark fiber Fiber-optic cables without any of the electronics (that is, multiplexers and amplifiers). Carriers can lay dark fiber and add SONET, Gigabit Ethernet, and wavelength- division multiplexers later. DCE (Data Circuit-Terminating Equipment) A communications device that 