Technical data

137
Supplementary Service IDI TTY CAPI
2.0
MSN (multiple subscriber number) • • •
DDI (direct dialing-in) • • •
SUB (sub-addressing) • • •
CLIP (calling line identification presentation) • • •
CLIR (calling line identification restriction) • •
COLP (connected line identification presentation) • •
COLR (connected line identification restriction) • •
CCBS (call completion to busy subscriber) • •
CCNR (call completion on no reply) • •
KEY (keypad protocol) • •
TP (terminal portability) • •
Call forwarding unconditional • •
Call forwarding busy • •
Call forwarding no reply • •
Call deflection • •
CW (call waiting) • •
HOLD (hold and retrieve a call) • •
ECT (explicit call transfer) • •
AoC (advice of charge) • •
Three-party conference • •
Large conference • •
User-to-user signaling • •