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APPENDIX 4 HARDWARE SPECIFICATIONS
Hardware Specifications
RINGER IMPEDANCE
RINGER SENSITIVITY:
25 Hz
OFF-HOOK CURRENT:
BATTERY FEED
Open circuit voltage
Constant Current
Short circuit current
MF4 RECEIVER
Level
Twist
Time between tones
ROTARY RECEIVER (Rate)
MF4 SENDER
Levels dBV (ZR)
Twist (1 dB < (VF
1 VF
H
Duration (programmable)
ROTARY SENDER (60/40 or 67/33)
MODEM (internal V.21 CCITT)
AC OPERATING RANGE
AC Line (230 VAC, +/- 10 %, 50 Hz)
Temperature
Humidity
Holdover
JACK
DC Power
Equipment:
RJ11 to RJ11
RJ11 Plug to BS6312 Plug
RJ11 Plug to BS6312 Socket
REGULATORY CONFORMITY
Safety (EN60950)
Emissions (EN50081-1, Class B)
Immunity (EN50082-1)
Network (TBR21)
Note: Although this equipment can use either loop disconnect or MF4 signalling, only the
performance of MF4 signalling is subject to regulatory requirements for correct operation. It is
therefore strongly recommended that the equipment be set to use MF4 signalling for access to
public or private emergency services. MF4 signalling also provides faster call set up.
8380-383-115-BA
Issue 2, June 1999
) < 4 dB)
L
Appendix 4 Hardware Specifications
Min
Typical
15
20
15
15
25
-22
-6
40
8
-9
-11
-7
-9
70
10
300
0
0
100
2.5
Max
Units
K Ohms
VAC
60
mA
VDC
30
mA
30
mA
+2
dBm
+6
dB
ms
12
pps
-13
VF
L
-12
VF
H
ms
pps
bps
50
mA
45
º C
85
%
ms
mm
92
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