common-channel interoffice signaling

common-channel interoffice signaling

[¦käm·ən ¦chan·əl ‚in·tər‚ȯ·fəs ′sig·nəl·iŋ]
(communications)
A method of signaling in a telecommunications switching system in which a network of separate data communication paths separate from the communications transmission is used for transmitting all signaling information between offices. Abbreviated CCIS.
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