Nortel BCM200 Installation And Maintenance Manual page 61

Table 10 ATA2, ASM8, ASM8+, GASM, and GASI analog device specifications (Sheet 2 of 2)
Specification
Loop current
Battery feed voltage
FIC code
Ringer equivalency
number
ATA2 to BCM 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
MWI type (see Note)
Disconnect
supervision types
Note: The MWI type depends on the country profile, and the MWI voltage shown is a maximum value.
ATA2 ASM8
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 (1538
(7200 m of m of 0.5-mm
0.5-mm wire or wire or 5000 ft of
26000 ft of 24 24 AWG wire)
AWG wire)
200 ohms (1231 250 ohms (1538
m of 0.5-mm m of 0.5-mm
wire or 4000 ft of wire or 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 BCM ATA2 to BCM
±
loss 3.0 dB 0.5 loss 3.0 dB
dB dB
ATA2 to BCM ASM to BCM
loss 2.2 dB +/- loss 3.0 dB +/-
1.0 dB; BCM to 1.0 dB; BCM to
ATA2 loss 0.5 ASM loss 0.5 dB
± ±
dB 1.0 dB 1.0 dB
Stutter tone Stutter tone
N/A N/A
Chapter 2 Introducing the BCM hardware
ASM8+
± ±
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 BCM
± ±
0.5 loss 3.0 dB 0.5
dB
ASM to BCM
loss 3.0 dB +/-
1.0 dB; BCM to
ASM loss 0.5 dB
±
1.0 dB
Stutter tone/
/ Voltage MWI
(CO: 120 V)
OSI EIA/TIA 464
section
4.5.10.2.4/
4.5.10.2.5.1
BCM200/400 4.0 Installation and Maintenance Guide
GASM8 GASI
±
-48 V dc 10% -48 V dc
N/A N/A
2 2
N/A N/A
200 ohms (1231 200 ohms (1231
m of 0.5-mm m of 0.5-mm
wire or 4000 ft of wire or 4000 ft of
24 AWG wire) 24 AWG wire)
200 ohms (1231 200 ohms (1231
m of 0.5-mm m of 0.5-mm
wire or 4000 ft of wire or 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 BCM ATA2 to BCM
±
loss 3.0 dB 0.5 loss 3.0 dB
dB dB
ASM to BCM ASM to BCM
loss 3.0 dB +/- loss 3.0 dB +/-
1.0 dB; BCM to 1.0 dB; BCM to
ASM loss 0.5 dB ASM loss 0.5 dB
± ±
1.0 dB 1.0 dB
Stutter tone/ Stutter Tone/
Reverse polarity/ Reverse polarity/
Voltage MWI Voltage MWI
(CO: 120 V) (PBX: 90 V)
OSI EIA/TIA 464 N/A
section
4.5.10.2.4/
4.5.10.2.5.1
61
±
10%
±
0.5