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Loop Telecom Products

E&M

Quad E&M Voice Card for

Loop-V 4200 Series

Feature

One 44-pin connector for E&M

Five E&M signaling types are supported: Type 1, Type 2, Type 3, Type 4, and Type 5.

B side E&M is normal, A side available.

TO supported. (Transmit Only)

A-law or µ-law coding

CAS Signaling convention

Intended for use with 110-220Vac or -48Vdc powered main units.

Description

Loop Telecom's Quad E&M plug-in card is designed for the Loop-V 4200 9-port and 28-port devices. It allows four E&M interfaces to be multiplexed to four 64 Kbps DS0 signals. It can also be used as TO (Transmit Only)

Voice coding can be selected as either A-law or µ-law.

This unit can be used on systems running 110-220Vac or -48Vdc power supply.

Ordering Information

To specify options, choose from list below:

Model	Description		Note
Loop-V 4200-Q2EM-m-Tn		Quad 2 Wire E&M voice card (For AC, -48Vdc power supply only.)	Where m = B for normal E&M, or TO = A for tandem operation n = 1 to 5 of E&M Signaling Type = O for TO
Loop-V 4200-Q4EM-m-Tn		Quad 4 Wire E&M voice card (For AC, -48Vdc power supply only.)

For example:

Loop-V4200-Q2EM-B-T3 = Quad 2W E&M, E&M Signaling Type 3, B side

Quad E&M Voice Card for Loop-V 4200 Series Product Specification

Voice Card (E&M)

Connector

One 44-pin connector, adapter cable included for 4 RJ45 connectors.

Power

110-220Vac or /48Vdc

Alarm Conditioning

CGA busy after 2.5 seconds of LOS, LOF

Encoding

A-law or µ-law, user selectable as a group

Impedance

Balanced 600â"¦ or 900â"¦

Longitudinal Rejection

55 dB

Longitudinal Max

2.5 volts peak AC

Longitudinal Balance

> 63dB

Loss Adjustment

0, 3, 6, or 9 dB transmit & receive

Signal/Distortion

> 46dB with 1004 Hz, 0dBm input

Frequency Response

- 0.25 to -1 dB from 300 to 3400 Hz

Idle Channel Noise

< 20 dBrnC0

Signaling

Type 1, Type 2, Type 3, Type 4, Type 5, and also TO (Transmit Only)

Moderms

Full compatibility with V.90 moderms

Operational Temp.

-20°C to +70°C

Relative Humidity

0% to 95%

All in-band signaling tones are carried transparently by the digitizing process.

Customer is responsible for in-band signaling compatibility between a telephone and a switch, or between a PBX and a switch.

Compliance

FCC Part 68, CS-03 listed for connection to PSTN

NRTL safety listed: UL1459, CSA

E&M Signaling Bits

Status	Normal	AB Bit Invert
	Tx	Rx	Tx	Rx
	A	B	C	D	A	B	C	D	A	B	C	D	A	B	C	D
A Side (Tamdem Mode)	M Lead	Open		0	0	*	*		1	1	*	1
		Close		1	1	*	*		0	0	*	*
	E Lead	Open	0	0	0	1		1	1	0	1
		Ground	1	1	0	1		0	0	0	1
B Side (Normal Mode)	E Lead	Open		0	0	*	*		1	1	*	*
		Ground		1	1	*	*		0	0	*	*
	M Lead	Open	0	0	0	1		1	1	0	1
		Ground	1	1	0	1		0	0	0	1

 

For TO, A B C D = 0 0 0 1.