Features Telephony :
Two voice ports (RJ-11) for analog phones or fax machines, Impedance agnostics - eight configurable settings
Call waiting, cancel call waiting, call waiting caller ID
Caller ID with name/number (multinational variants)
Caller ID blocking, Call forwarding: no answer, busy, all
Call transfer, Three-way conference calling with local mixing
Message waiting indication - visual and tone based
Call return, Call back on busy
Call blocking with toll restriction, Delayed disconnect
Distinctive ringing - calling and called number
Off-hook warning tone, Selective/anonymous call rejection
Hot line and warm line calling
Speed dialing of eight numbers/addresses
Music on hold
G.726 (16/24/32/40 kbps)
G.723.1 (6.3 kbps, 5.3 kbps)

Physical interfaces
One 10BASE-T RJ-45 Ethernet port (IEEE 802.3)
2 RJ-11 FXS phone ports - for analog circuit telephone device (tip/ring)

Power supply
DC input voltage : +5V DC at 2.0A max. Power consumption: 5W
Switching type (100-240V) automatic
Power adapter: 100-240V - 50-60 Hz (26-34 VA) AC input, 1.8 m cord
Dimensions : 3.98 x 3.98 x 1.10 in.(101 x 101 x 28 mm)
Unit weight : 5.40 oz (153 g)