Unlocked LINKSYS SPA2102 VOIP PSTN Phone Adapter with 2x FXS + WAN Port

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