interruptible feedback line
relay feedback identification
call identification line
caller line identification
calling identification line
calling line identification
Calling Line Identification Presentation
Calling Line Identification Presentation CLIP
calling line identification restriction
Calling Line Identification Restriction CLIR
classical physicscalling line identification
CLASSICcalling line identification
CLIDcalling line identification restriction
Connected Line Identification Presentation
Connected Line identification Presentation COLP
Connected Line Identification Restriction
Connected Line identification Restriction COLR