Excelltel MS Series - 2.2 Technical Parameter; 2.3 Attention

MS Series PABX User Manual
4
208/308 Connection Diagram:
2.2 Technical Parameter
Power Supply Voltage ……………… AC 220V or AC 110V, 50-60Hz
Power Dissipation…………………… ≤20VA
Exchange Mechanism……………… Analog spatial division
Type of Telephone……………………Dual Tone Multi-Frequency
Communications Lines………………108/206/ 208/308---7
IC Power Supply………………………±5V
Distortion……………………………… ≤10%
Ringing Voltage ……………………… AC 70V±10% 50HZ
Crosstalk Attenuation…………………≧70 dB
Transmission Loss…………………… 0.37 dB
2.3 Attention
Please pay attention to the important items of installation:
● The telephone exchange shall be installed in a stable indoor place with
dry, ventilated environment. (Temperature Range: 0-45℃, Humidity Range:
20%-80%.Avoid straight sun shine or in the environment of flammable or
caustic gas.) Special telephone wire is preferable.