1) Two voice ports (RJ11) for analog phones or Fax machines

2) Impedance Agnostics - 8 Configurable Settings

3) Call Waiting Cancel Call Waiting Call Waiting Caller ID

4) Caller ID with Name/Number (Multi-national Variants)

5) Caller ID Blocking

6) Call Forwarding: No answer Busy All

7) Do Not Disturb

8) Call Transfer

9) Three-way Conference Calling with Local Mixing

10) Message Waiting Indication - Visual and Tone Based

11) Call Return

12) Call Back on Busy

13) Call Blocking with Toll Restriction

14) Delayed Disconnect

15) Distinctive Ringing - Calling and Called Number

16) Off-hook Warning Tone

17) Selective/Anonymous Call Rejection

18) Hot line and Warm Line Calling

19) Speed Dialing of 8 Numbers/Addresses

20) Music on Hold

21) Fax: G.711 Pass Through or Real Time Fax over IP via T.38