apartment intercom system pabx 2 lines 8 exts

1.  Auto-Attendant(DISA-30S Outgoing message(3 sections 30S)
2. Intercom caller ID
3. Can't  be connected with one Key Phone.
4. Interrupt,disconnect a call. 
5. 6 Class of Services.
6. Do-not-Diturb.
7. IP Econnomical Routing 

8. Accompany password.
9. intercom Music on holding.
10 Hot-call dialing.

   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 

   Environment Limits   

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

  Cable Requirements 

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  

Shenzhen Cesller Technology Co.,Ltd,our headquarter lies in Canada. It is a hi-tech. Company, specializing in manufacturing, developing, selling of group-phone system and communication equipments. The managing idea is to provide continually communication products which joint global communication and synchronize to world communication.