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 4Maxwell Basic/2/3
Gigaset software release used2.23.042.2501133.
Basic callYesYesYesYes


Calling line (CLIP)YesYesYesYesYes
Connected line (COLP)NoNoNoNoNo
Anonymous callYesYesYesYesYes
Do not disturb (DND)YesNoNoYesYes
Message waitingNoNoNoNoNo
Call list / historyYesYesYesYesYes
Voice mail deposit / retrievalNoNoNoNoNo
Call waitingYesYesYesYesYes
Call hold / toggleYesYesYesYesYes
Call forward (CFU) (**21*Number#)YesYesYesYesYes
Call forward (CFNR) (**61*<number>#)YesYesYesYesYes
Call forward (CFB) (**67*<number>#)YesYesYesYesYes
Call transfer attendedNoNoNoNoNo
Call transfer unattendedNoNoNoNoNo
DTMF (RFC2833)YesYesYesYesYes
Conference 3ptyYesYesNoYesYes
BLF busy / idle indicationNoNoNoNoNo
Call pick-up direct  (*8 extension)NoNoNoNoNo
Call pick-up group (*8)NoNoNoNoNo
Call pick-up BLFNoNoNoNoNo
Call completed elsewhereNoNoNoNoNo
Phonebook LDAPNoNoNoNoNo
Auto provisioningNoNoNoNoNo
SettingsClick hereClick hereClick hereClick hereClick here

ETSI codes: see the following link for all ETSI codes used in case of call forward service:

Provisioning: is possible provision all generic parameters inserting, into the "Provisioning server" of each product, the URL indicated into the "Settings" field.