See below for a list with supported features when using the Gigaset PRO IP Devices on the providers network.

Feature                                        N870/N670 IP PRO N510 IP PRO N720 IP PRO Maxwell 4 Maxwell Basic/2/3 Gigaset software release used 2.23.0 42.250 113 3.14.8 3.14.8 Basic call Yes Yes Yes Yes Yes Calling line (CLIP) Yes Yes Yes Yes Yes Connected line (COLP) Yes Yes Yes Yes Yes Anonymous call Yes Yes Yes Yes Yes Do not disturb (DND) Yes No No Yes Yes Message waiting Yes Yes Yes Yes Yes Call list / history Yes Yes Yes Yes Yes Voice mail deposit / retrieval Yes Yes Yes Yes Yes Call waiting Yes Yes Yes Yes Yes Call hold / Toggle Yes Yes Yes Yes Yes Call forward (CFU) Yes Yes Yes Yes Yes Call forward (CFNR) Yes Yes Yes Yes Yes Call forward (CFB) Yes Yes Yes Yes Yes Call transfer attended Yes Yes Yes Yes Yes Call transfer unattended Yes Yes Yes Yes Yes DTMF (RFC2833) Yes Yes Yes Yes Yes Conference 3pty Yes Yes No Yes Yes BLF busy / idle indication NA NA NA Yes Yes Call pick-up direct Yes Yes Yes Yes Yes Call pick-up group Yes Yes Yes Yes Yes Call pick-up BLF NA NA NA Yes Yes Call completed elsewhere Yes Yes Yes Yes Yes Phonebook LDAP Yes Yes Yes Yes Yes Auto provisioning Yes Kalliope_N670_870.txt Yes Kalliope_N510.txt Yes Kalliope_N720.txt Yes Kalliope_Maxwell4.txt Yes Kalliope_MaxwellBasic_2_3.txt Call Forward: the service can be activated with phone feature and over the PBX.