Supplementary service operation summary

The following table lists the supplementary service operations and the variants those operations support. Operations vary depending on the implementation. In this table, V = isdngen implementation, X = original variant-specific implementation, and VX = both implementations:

Supplementary service operation	ETSI	Q.SIG	NI2	DMS
Invoke bridge calls	-	X	-	-
Invoke call hold	X	-	-	-
Invoke call retrieve	X	-	-	-
Notify hold	X	X	-	-
Notify retrieve	X	X	-	-
Explicit call transfer	V X	-	-	-
Notify transfer	X	X	-	-
Invoke two channel transfer	-	V	X	X
Notify two channel transfer	-	-	X	-
Release link trunk	-	-	-	X
Invoke call diversion	-	X	-	-
Activate diversion	X	-	-	-
Deactivate diversion	X	-	-	-
Enquire diversion	X	-	-	-
Remind diversion	X	-	-	-
Notify diversion (Q.SIG and ETS 300)	X	X	-	-
Invoke call deflection	X	-	-	-
Activate deflection	X	-	-	-
Deactivate deflection	X	-	-	-
Advice of charge request	X	-	-	-
Advice of charge inform	X	-	-	-
Calling name identification presentation (CNIP)	-	V X	X	X
Connected name identification presentation (CONP)	-	V X	X	X
Calling line identification presentation (CLIP)	V X	V X	X	X
Calling line identification restriction (CLIR)	V X	V X	X	X
Connected line identification presentation (COLP)	V X	V X	X	X
Connected line identification restriction (COLR)	V X	V X	X	X