ANF Additional Network Feature
BCD Binary Coded Decimal
CLIP Calling Line Identification Presentation
CLIR Calling Line Identification Restriction
CN Corporate telecommunications Network
COLP Connected Line identification Presentation
COLR Connected Line identification Restriction
CPE Customer Premises Equipment
CPN Customer Premises Network
PINX Private Integrated services Network eXchange
PISN Private Integrated Services Network
PSS1 Private Signalling System No. 1
SUB Sub-addressing
VPN Virtual Private Network