CCIS meaning in Telecommunication ?

Answer:

What is Common Channel Interoffice Signaling mean?

In telecommunication, common-channel signaling (CCS), or common-channel interoffice signaling (CCIS), is the transmission of control information (signaling) via a separate channel than that used for the messages, The signaling channel usually controls multiple message channels.

In the public switched telephone network (PSTN) one channel of a communications link is typically used for the sole purpose of carrying signaling for establishment and tear down of telephone calls. The remaining channels are used entirely for the transmission of voice messages. In most cases, a single 64 kbit/s channel is sufficient to handle the call setup and call clear-down traffic for numerous bearer (voice and data) channels.

The technical alternative to CCS is channel-associated signaling (CAS), in which each bearer channel has a dedicated signaling channel.

CCS offers the following advantages over CAS, in the context of the PSTN:

Faster call set-up timeGreater trunking efficiency due to the quicker set up and clearing, thereby reducing traffic on the networkCan transfer additional information along with the signaling traffic, providing features such as caller IDSignaling can be performed mid-call

The most common CCS signaling methods in use are Integrated Services Digital Network (ISDN) and Signalling System No. 7 (SS7).

ISDN signaling is used primarily on trunks connecting end-user private branch exchange (PBX) systems to a central office. SS7 is primarily used within the PSTN. The two signaling methods are very similar since they share a common heritage and in some cases, the same signaling messages are transmitted in both ISDN and SS7.

reference

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Centennial Centre For Interdisciplinary Science	Academic & Science
College of Computer and Information Science	Academic & Science
Child Care Information Service	Community
Child Care Information Services	Community
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Coal City Intermediate School	Community
Center For Computing And Information Systems	Computing
Communications in Computer and Information Science	Computing
Common Channel Interoffice Signaling System	Computing
Center for Cyber and Information Security	Computing
College Consortium for International Studies	Educational Institute
Care Coordination Information System	General
Consortium for Critical Interdisciplinary Studies	General
California Consortium for Independent Study	General
Consortium of	General
Corporate Customers Information System	General
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Cooperative Crash Investigation Study	General
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Cleveland Council of Independent Schools	Governmental
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Customer Care Internet Service	Internet
Command and Control Information System	Military and Defence
Common Channel Interswitch Signaling	Military and Defence
Common Channel Interoffice Signaling	Telecommunication