. 2 FXS phone ada[pter , Support SIP protocol 2. One RJ-45 port for 10Base-T Ethernet connection 3. Supports Dynamic Host Configuration Protocol (DHCP) 4. Call Waiting,Transfer,Call Forwarding: No Answer / Busy / All 5. Call Return,Call Back on Busy,Call Blocking with Toll Restriction 6. Supports G.711, G.726, G.729, and G.723.1 codec 7. Supports DTMF tone detection and generation 8. Web-based configuration through a built-in web server
