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Telephone Line
Off-hook Impedance (at 1 kHz)
Off-hook DC Resistance (DC 40 mA)
On-hook Impedance 20 Hz (75 Vrms)
Minimum Ringer Input Level
Pulse Dialing
a. Dialing Rate
b. Make Rario
DTMF Output (600 Ω load)
a. Minimum Level On Single Tone
b. DTMF Level
c. DTMF Frequency
d. Signal Length
e. Interdigital Pause
Handset Unit
RECEIVER
Sensitivity 12 dB SINAD (CCITT Filter ON)
Frequency Response
Audio Output Level
Distortion at 1 mV RF Input
S/N ratio at 1 mV RF Input (CCITT Filter ON, Compander ON)
Selectivity (NQ20dB)
Image Rejection Ratio (12 dB SINAD, CCITT Filter ON)
Ringer Level at 30 cm from Speaker (Bell Sound)
Frequency
Page Level at 30 cm from Speaker
Frequency
10 pps
10 pps
Low Group
High Group
Row 1
Row 2
Row 3
Row 4
Column 1
Column 2
Column 3
0.3 kHz
3.0 kHz
6 dB Bandwidth −
6 dB Bandwidth +
1st Image fo+14.32 MHz×2
2nd Image fo+455 KHz×2
2.2 kHz +20 kHz
2.0 kHz
a %a
Unit
Nominal
ohm
1000
ohm
250
kohm
25
V
25
pps
10
%
40
−7
dBm
−5
dBm
−3
dBm
Hz
697
Hz
770
Hz
852
Hz
941
Hz
1209
Hz
1336
Hz
1477
msec
100
msec
100
−115
dBm
dB
1
−5.5
dB
mV
155
%
1.5
dB
70
kHz
13
kHz
13
dB
30
dB
55
dBSPL
90
dBSPL
85
Limit
500 ~ 1500
100 ~ 300
> 10
< 40
8.0 ~ 11.0
36 ~ 42
> −10
> −8
< 0
687 ~ 707
759 ~ 781
840 ~ 864
927 ~ 955
1191 ~ 1227
1316 ~ 1356
1455 ~ 1499
> 90
> 90
< −107
−3.0 ~ +5.0
−1.5 ~ −9.5
110 ~ 215
< 5
> 60
> 10
> 10
> 20
> 30
> 75
>75
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