CHANNEL SERVICE UNIT/DATA SERVICE UNIT
\t͡ʃˈanə͡l sˈɜːvɪs jˈuːnɪt slˈaʃ dˈe͡ɪtə sˈɜːvɪs jˈuːnɪt], \tʃˈanəl sˈɜːvɪs jˈuːnɪt slˈaʃ dˈeɪtə sˈɜːvɪs jˈuːnɪt], \tʃ_ˈa_n_əl s_ˈɜː_v_ɪ_s j_ˈuː_n_ɪ_t s_l_ˈa_ʃ d_ˈeɪ_t_ə s_ˈɜː_v_ɪ_s j_ˈuː_n_ɪ_t]\
Definitions of CHANNEL SERVICE UNIT/DATA SERVICE UNIT
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(CSU/DSU, or "..digital..") Adevice that performs both the channel service unit (CSU) anddata service unit (DSU) functions. The Channel Service Unit(CSU) is used to terminate a DS1 or DS0 (56/64 kb/s)digital circuit. It peforms line conditioning, protection,loop-back and timing functions. The Data Service Unit (DSU)terminates the data circuit to the Data Terminal Equipment(DTE) and converts the customer's data stream into a bi-polarformat for transmission.
By Denis Howe
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