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
