See below for a list with supported features when using the Gigaset PRO DECT IP Devices on Innovaphone

IP800.

Feature	N510 IP PRO	N720 Multi cell
Software release:	210	92
Basic Call	yes	yes
Calling line (CLIP)	yes	yes
Connected line (COLP)	-	-
Anonymous call	yes	yes
Do Not Disturb	-	-
Message waiting	yes	yes
Call list/history	yes (local)	yes(local)
Voice mail	yes	yes
Call waiting	yes	yes
Call Hold / Toggle	yes	yes
Music on Hold	yes	yes
Call forward (CFU)	Code-	Code-
Call forward (CFNR)	Code-	Code-
Call forward (CFB)	Code-	Code-
Call Transfer attended	yes	yes
Call Transfer unattended	yes	yes
Call Transfer blind	no	no
DTMF (RFC2833)	yes	yes
Conference 3pty	yes	no
BLF Busy / Idle indication	--	--
Call pick-up direct ( * 8 extension)	-	-
Call pick-up group ( * 8 )	-	-
Call pick-up BLF	-	-
Call completed elsewhere	yes	yes
Auto provisioning	no	no