Appendix G - Specifications
Extension Interface |
|
Loop range | 0 to 600 ohms |
On hook voltage | 35 volts |
Off hook loop voltage source | 35 volts |
Off hook loop current | 23 to 40 mA |
Ringing voltage | 90 volts RMS |
Ringing frequency | 20 Hz - True Sine wave |
Total supported ringing load | 5 REN |
Trunk type | Loop start |
Connector type | |
Interface impedance | 600 ohms |
Dial tone level | |
Signaling type | DTMF only |
Flash hook supported | Yes |
C.O. Interface |
|
Interface impedance | 600 ohms |
Trunk type | Loop start |
Connector type | |
Ringing impedance | 3,900 ohms |
Ringing sensitivity | 45 volts RMS @ 20Hz |
REN | 1.8 |
Longitudinal balance | 69 dB |
Signal level | - 10 dB |
Caller ID support | All lines |
Distinctive ring supported | Yes |
System |
|
C.O. interfaces Extension interfaces
LAN interface Memory expansion*
2 / 4*
4 / 8*
1
1
Ethernet (10BaseT)
8, 16, 32, 64 MB TalkSwitch Memory Cards
Appendices 127
