Specification:

1. 2 FXS voice ports (RJ-11 ) ,
2. one Fast Ethernet port (RJ-45),
3. protocol Voice SIP v2 (Session Initiation Protocol) ,
4. voice codecs G.711 a-law , G.711 micro -law , G.726 , G.729A , G.723.1,
5. REN ( Ringer Equivalence Number ) - 5 REN per RJ-11 port,
6. Ring frequency: 10-40 Hz,
7. Ring Voltage : 60-90 Vrms ,
8. FXS port impedance : 8 settings (including European CTR21 and U.S. 600 Ohm),
9. dimensions : 101x101x15 mm,
10. weight: 140 g,
11. Warranty : 24 months.

Functionality:

1. Support for: DTMF,FSK Caller ID, DTMF Caller ID,FSK VMWI,
2. Echo cancellation ,
3. VAD (Voice Activity Detection ) ,
4. possibility connecting two telephones or fax machines with two separate phone numbers
5. Configuration using a web browser or keyboard phone.

Demand for bandwidth for voice codecs :

1. Best - G.711u requires 64k bandwidth ,
2. Best - G.711a requires 64k bandwidth ,
3. Good - G.726 -40 requires 40k bandwidth ,
4. Good - G.726 - 32 requires 32k bandwidth ,
5. Good - G.729 requires 8k band
6. Normal - G.726 -24 requires 24k bandwidth ,
7. Normal - G.726 - 16 requires 16k bandwidth ,
8. Normal - G.723 requires 7k bandwidth.