Capacity
(Different model has different capacity)
Outside (CO) Lines =2,3, 4, 6, 8, 12 or 16
Extensions = 4 to 128
Exterior sockets:
Extension/CO line, PC network,
TC-2000DK & VK series have additional features:
Tone Output, External Music Input, Voice Recorder, Broadcast.
Communication Channels:
AK = 7 HK = 7 DK=15 VK=15
Transmission Attributes:
Extension to Extension 1.5dB
Extension to Trunk line 2.0dB
Ringing Current:
Model AK = AC 65V/50Hz
Model HK, DK, VK = AC65V/25Hz
Feeding Current
= DC 48V/25mA
Relative Unbalance Against Ground:
300Hz-600Hz 40dB
600Hz-3400Hz 46dB
Dialing Mode:
DTMF
1.2 Technical Index
Section 1 Basic System Construction
8
Signal Tone:
CO Line: Tone from Local Telecom Office
Internal Dial Tone: 450Hz, Continuous Square Wave
Internal Ringing Tone: 450Hz, square wave, 1sec on and 4sec off
Internal Busy Tone: 450Hz, square wave, 0.3sec on, 0.3sec off
Internal Verify Tone: 450Hz, square wave, 1sec on
Internal Error Tone: 450Hz, square wave, 0.3sec on, 0.3sec off
Caller ID:
Receive: DTMF, FSK
Bell 202)
Send: DTMF
Power Supply:
AK: AC220V
10% /15VA HK: AC80V
260V /35VA
DK: AC80V
260V /60VA VK: AC80V
260V /50VA
Backup Battery
HK: 6V/10AH*1pcs
Charge current
1A
DK: 12V/7AH*4pcs
Charge current
200mA
VK: 12V/7AH*4pcs
Charge current
200mA
HK,DK,VK: External Music Input Power Level: 1Vrms Resistance:10K
HK,DK,VK: Broadcast Output Power Level: 200mVrms Resistance:1K
DK,VK Telephone Voice Recorder Control Voltage:48V/10V
In Point Environment:
Temperature: 0 C-40 C
Relative humidity 90%