Understanding Pre-Installation Requirements - Nortel BCM50 Installation And Maintenance Manual

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Understanding pre-installation requirements

Understanding pre-installation requirements

Before you attempt to install an analog terminal adapter 2 (ATA 2) device, ensure that your system
and environment meet the requirements listed in this section.
Environmental requirements
Line voltage (120 V)
Line voltage (230 V)
Temperature
Relative humidity
Bridge taps
Operating requirements
Ringing signal (North America):
Frequency Voltage:
Ringing signal (Europe):
Frequency voltage:
Ringer equivalence number
Battery feed voltage
Loop current
FIC code
ATA 2 to BCM50 system loop resistance
(cable only)
Analog loop resistance on terminal side for
voice applications (cable only)
Analog loop resistance on terminal for data
applications (cable only)
Analog transmission parameters (North American systems, only)
Input impedance at tip and ring
Return loss
Insertion loss on an internal call
Insertion loss on an external call
To test insertion loss once the analog device is attached to the system, refer to
insertion loss measurement" on page
Install analog terminal adapters
102 – 132 V ac
207 – 253 V ac
0 – 50°C (32 – 122°F)
5% – 95% non-condensing
Not allowed between the BCM50 system loading coils and ATA 2
600 ohms
> 20 dB for 200 to 3,400 Hz (when Network terminated
with 600 ohms)
ATA 2 to BCM50 system loss 3.0 dB ± 0.5 dB
ATA 2 to BCM50 system loss 2.2 dB ± 1.0 dB
BCM50 system to ATA 2 loss 0.5 dB ± 1.0 dB
142.
20 Hz ± 1 Hz
80 V rms ± 10%
25 Hz ± 1 Hz
75 V rms ± 10%
3
- 48 V dc ± 10%
20 mA minimum
OL13ABC
135 ohms maximum (for example: 800 m of
0.5 mm wire or 2,600 ft. of 24 AWG wire)
1,300 ohms maximum (for example: 4,600 m of
0.4 mm wire or 15,000 ft. of 26 AWG wire)
200 ohms maximum (for example: 730 m of
0.4 mm wire side or 2,400 ft. of 26 AWG wire)
"Testing