Nortel BCM50 3.0 Installation And Maintenance Manual page 51

The table ATA2, ASM8, ASM8+, GASM, and GASI analog device specifications
shows the specifications for ATA2, ASM8, GASM, and GASI.
Table 5 ATA2, ASM8, ASM8+, GASM, and GASI analog device specifications (Sheet 1 of 2)
Specification
Ringing frequency
(North America)
Ringing frequency
(Europe)
Ringing voltage (North
America)
Ringing voltage
(Europe)
Loop current
Battery feed voltage
FIC code
Ringer equivalency
number
ATA2 to BCM50 loop
resistance (cable only)
Analog loop resistance
on terminal side for
voice applications
(cable only)
Analog loop resistance
on terminal side for
data applications
(cable only)
Input impedance at tip
and ring
Return loss
Insertion loss on an
internal call
Insertion loss on an
external call
ATA2 ASM8
±
20 Hz 1 Hz 20 Hz
±
25 Hz 1 Hz 25 Hz
±
80 V rms 10% 55 V rms
±
75 V rms 10% N/A
20 mA minimum 20 mA minimum 20 mA minimum 20 mA minimum 20 mA minimum
±
–48 V dc 10% –48 V dc
OL13ABC N/A
3 1
135 ohms N/A
(800 m of
0.5-mm wire or
2600 ft of
24-AWG wire)
1300 ohms 250 ohms
(7200 m of (1538 m of
0.5-mm wire or 0.5-mm wire or
26000 ft of 5000 ft of
24-AWG wire) 24-AWG wire)
200 ohms 250 ohms
(1231 m of (1538 m of
0.5-mm wire or 0.5-mm wire or
4000 ft of 5000 ft of
24-AWG wire) 24-AWG wire)
600 ohms 600 ohms
> 20 dB for 200 > 20 dB for 200
to 3400 Hz to 3400 Hz
(when (when
terminated with terminated with
600 ohms) 600 ohms)
ATA2 to BCM50 ATA2 to BCM50
±
loss 3.0 dB 0.5 loss 3.0 dB
dB dB
ATA2 to BCM50 ASM to BCM50
±
loss 2.2 dB 1.0 loss 3.0 dB
dB; BCM50 to dB; BCM50 to
ATA2 loss 0.5 dB ASM loss 0.5 dB
± ±
1.0 dB 1.0 dB
Chapter 2 Introducing the BCM50 hardware
ASM8+
± ±
1 Hz 20 Hz 1 Hz
± ±
1 Hz 25 Hz 1 Hz
± ±
10% 65 V rms 10% 65 V rms
±
65 V rms 10% 65 V rms
± ±
10% –29 V dc 10%
N/A
2
N/A
200 ohms
(1231 m of
0.5-mm wire or
4000 ft of
24-AWG wire)
200 ohms
(1231 m of
0.5-mm wire or
4000 ft of
24-AWG wire)
600 ohms
> 20 dB for 200
to 3400 Hz
(when
terminated with
600 ohms)
ATA2 to BCM50
± ±
0.5 loss 3.0 dB
dB
ASM to BCM50
± ±
1.0 loss 3.0 dB
dB; BCM50 to
ASM loss 0.5 dB
±
1.0 dB
on page 51
GASM GASI
±
20 Hz 1 Hz 20 Hz
±
25 Hz 1 Hz 25 Hz
±
10% 65 V rms
±
10% 65 V rms
±
–48 V dc 10% –48 V dc
N/A N/A
2 2
N/A N/A
200 ohms 200 ohms
(1231 m of (1231 m of
0.5-mm wire or 0.5-mm wire or
4000 ft of 4000 ft of
24-AWG wire) 24-AWG wire)
200 ohms 200 ohms
(1231 m of (1231 m of
0.5-mm wire or 0.5-mm wire or
4000 ft of 4000 ft of
24-AWG wire) 24-AWG wire)
600 ohms 600 ohms
> 20 dB for 200 > 20 dB for 200
to 3400 Hz to 3400 Hz
(when (when
terminated with terminated with
600 ohms) 600 ohms)
ATA2 to BCM50 ATA2 to BCM50
±
0.5 loss 3.0 dB 0.5 loss 3.0 dB
dB dB
ASM to BCM50 ASM to BCM50
±
1.0 loss 3.0 dB 1.0 loss 3.0 dB
dB; BCM50 to dB; BCM50 to
ASM loss 0.5 dB ASM loss 0.5 dB
± ±
1.0 dB
Installation and Maintenance Guide
51
±
1 Hz
±
1 Hz
±
10%
±
10%
±
10%
±
0.5
±
1.0
1.0 dB