Access codes
Automatic number translation
Block black listed callers
Call detail record (CDR)
Clip
Do not disturb (DND)
Fax over IP (T.38 and pass-through)
FXO ports
FXS ports
Least cost routing
Peer-to-peer calling table
PPPoE
MAC cloning
V-LAN tagging
NAT and STUN support
Incoming calls routing
Phonebook
Supplementary services
(Call forward, call hold, call waiting and, call transfer)