ISDN Features

Common ISDN Supplemantary Services

• CLIP: Calling Line Identification Presentation
• CLIP – no screening: CLIP can be modified by the caller out of the bounds of it’s assigned number space
• CLIR: Calling Line Identification Restriction. CLIP is supressed.
• COLP: Connected Line Identification Presentation
• COLP – no screening: COLP can be modified out of the bounds of it’s assigned number space
• COLR: Connected Line Identification Restriction. COLP is supressed.
• AOC-S: Advice of Charge at call set-up time
• AOC-E: Advice of Charge at the end of the call
• AOC-D: Advice of Charge during the call
• CD: Call Deflection (divert calls while they are ringing)
• SUB: Subaddressing
• CFB: Call forwarding on busy
• CFU: Call Forwarding Unconditional
• CFNR: Call Forwarding No Reply
• CCNR: Competion of Call if Not Reacable (automatic callback on no reply)
• HOLD: Call Hold
• CW: Call Waiting
• 3PTY: Three-party conference
• CONF: Conference Call, Add-on
• TP: Terminal Portability (allows a terminal to be disconnected and reconnected while /parking/ the call)
• CUG: Closed User Group
• CCBS: Completion of Calls to Busy Subscriber (automatic callback on busy)
• DDI: Direct Dialling In
• ECT: Explicit Call Transfer (refered to as TBCT, 2BCT, External Transfer, External Call Clearing and various other names by circuit providers)
• LH: Line Hunting
• MCID: Malicious Call Identification
• MMC: Meet-Me Conference
• MWI: Message Waiting Indication
• MSN: Multiple Subscriber Number
• OCB-F: Outgoing Call Barring, Fixed
• OCB-UC: Outgoing Call Barring, User Controlled
• TP: Terminal Portability
• TH: Trunk Hunting
• UUS: User-to-User Signalling, services 1, 2 and 3
• En-bloc Dialling:
• Overlap Dialling: