telephone exchange 2 way intercom system

Main Functions

1.Outgoing message(3 sections 30S)

2.Built-Call ID for Outside Line and Extension Line.

3.IP Econnomical Routing.

4.Multilevel call of serive restriction

5. Outgoing and Incoming Call Inquiry at Key Phone

6. It can be tranfered again and again 2.Hot-call dialing

7.32 Group accompany password

8.Use display to check itself extension

9. Pick-up a Call

10. Flexible Numberring leading number is 1,2,8.The length is from 2 digits to 4 digits

11. Call queuing.

12.One road Call to Exts when power off

13. Time-limit Talk

14. Hotline dial

15.Do-not-Disturb. 

16.Can’t be connect with key phone.

 Power Supply 

Power supply voltage: 110VAC or 220 VAC,50/60 Hz 
Maximum power consumption: 30W 
Cross-talk attenuation: >70db 
Internal feeding voltage: +28VDC, 30mA 
Internal ringing voltage:75VAC/50Hz 
External line port voltage: <60VDC 
External line port ringing voltage: 35VAC/25Hz or >35VAC/50Hz 

 Environmental Limits 

Operating temperatures: 0°C to 45°C (32°F to 113°F) 
Operating humidity: 10% to 95% without condensation 

Cable Requiremnts 

Feature phone: Maximum 100m(2 pairs twisted wire 0.5@) 
Single line phone: Maximum 1,000m(1 pair twisted wire 0.5@)

Outgoing call: DTMF 
Cross lose: > 70dBII  

 Office telephone