Excelltel MK-208 - Technical Parameter; Attention

3
208/308 Front View: 208/308 Rear View :
External Music interface① Co line Port②
Extension Por③ t Power Socket④
Lock interface 2⑤ Lock interface 1⑥
keyphone interface⑦
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---2（1 for Ext.,1 for CO line）;
206---3; 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: