Nortel Networks 400 4.0, BCM200 manual Osi Eia/Tia

60Chapter 2 Introducing the BCM hardware

Table 10 ATA2, ASM8, ASM8+, GASM, and GASI analog device specifications (Sheet 2 of 2)

Specification	ATA2	ASM8	ASM8+	GASM8	GASI
Loop current	20 mA minimum	20 mA minimum	20 mA minimum	20 mA minimum	20 mA minimum
Battery feed voltage	-48 V dc ± 10%	-48 V dc ± 10%	-29 V dc ± 10%	-48 V dc ± 10%	-48 V dc ± 10%
FIC code	OL13ABC	N/A	N/A	N/A	N/A
Ringer equivalency	3	1	2	2	2
number
ATA2 to BCM loop	135 ohms	N/A	N/A	N/A	N/A
resistance (cable only)	(800 m of
	0.5-mm wire or
	2600 ft of 24
	AWG wire)
Analog loop resistance	1300 ohms	250 ohms (1538	200 ohms (1231	200 ohms (1231	200 ohms (1231
on terminal side for	(7200 m of	m of 0.5-mm	m of 0.5-mm	m of 0.5-mm	m of 0.5-mm
voice applications	0.5-mm wire or	wire or 5000 ft of	wire or 4000 ft of	wire or 4000 ft of	wire or 4000 ft of
(cable only)	26000 ft of 24	24 AWG wire)	24 AWG wire)	24 AWG wire)	24 AWG wire)
	AWG wire)
Analog loop resistance	200 ohms (1231	250 ohms (1538	200 ohms (1231	200 ohms (1231	200 ohms (1231
on terminal side for	m of 0.5-mm	m of 0.5-mm	m of 0.5-mm	m of 0.5-mm	m of 0.5-mm
data applications	wire or 4000 ft of	wire or 5000 ft of	wire or 4000 ft of	wire or 4000 ft of	wire or 4000 ft of
(cable only)	24 AWG wire)	24 AWG wire)	24 AWG wire)	24 AWG wire)	24 AWG wire)
Input impedance at tip	600 ohms	600 ohms	600 ohms	600 ohms	600 ohms
and ring
Return loss	> 20 dB for 200	> 20 dB for 200	> 20 dB for 200	> 20 dB for 200	> 20 dB for 200
	to 3400 Hz	to 3400 Hz	to 3400 Hz	to 3400 Hz	to 3400 Hz
	(when	(when	(when	(when	(when
	terminated with	terminated with	terminated with	terminated with	terminated with
	600 ohms)	600 ohms)	600 ohms)	600 ohms)	600 ohms)
Insertion loss on an	ATA2 to BCM	ATA2 to BCM	ATA2 to BCM	ATA2 to BCM	ATA2 to BCM
internal call	loss 3.0 dB ± 0.5	loss 3.0 dB ± 0.5	loss 3.0 dB ± 0.5	loss 3.0 dB ± 0.5	loss 3.0 dB ± 0.5
	dB	dB	dB	dB	dB
Insertion loss on an	ATA2 to BCM	ASM to BCM	ASM to BCM	ASM to BCM	ASM to BCM
external call	loss 2.2 dB +/-	loss 3.0 dB +/-	loss 3.0 dB +/-	loss 3.0 dB +/-	loss 3.0 dB +/-
	1.0 dB; BCM to	1.0 dB; BCM to	1.0 dB; BCM to	1.0 dB; BCM to	1.0 dB; BCM to
	ATA2 loss 0.5	ASM loss 0.5 dB	ASM loss 0.5 dB	ASM loss 0.5 dB	ASM loss 0.5 dB
	dB ± 1.0 dB	± 1.0 dB	± 1.0 dB	± 1.0 dB	± 1.0 dB
MWI type (see Note)	Stutter tone	Stutter tone	Stutter tone/	Stutter tone/	Stutter Tone/
			/ Voltage MWI	Reverse polarity/	Reverse polarity/
			(CO: 120 V)	Voltage MWI	Voltage MWI
				(CO: 120 V)	(PBX: 90 V)
Disconnect	N/A	N/A	OSI EIA/TIA 464	OSI EIA/TIA 464	N/A
supervision types			section	section
			4.5.10.2.4/	4.5.10.2.4/
			4.5.10.2.5.1	4.5.10.2.5.1

Note: The MWI type depends on the country profile, and the MWI voltage shown is a maximum value.

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