What does CCIS stand for?
CCIS stands for "common-channel interoffice signaling"
How to abbreviate "common-channel interoffice signaling"?
"common-channel interoffice signaling" can be abbreviated as CCIS
What is the meaning of CCIS abbreviation?
The meaning of CCIS abbreviation is "common-channel interoffice signaling"
What does CCIS mean?
CCIS as abbreviation means "common-channel interoffice signaling"