In multichannel switched networks, a method of transmitting all signaling information for a group of trunks by encoding it and transmitting it over a separate channel using time -division digital techniques.
COMMON CHANNEL INTEROFFICE SIGNALING (CCIS)
Meaning of COMMON CHANNEL INTEROFFICE SIGNALING (CCIS) in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012