User manual

Chapter 1. Introduction
61200105L3-1A E&M+ Dual Voice Option Module User Manual 1-3
E&M+ Option Module Specifications
The E&M+ voice module conforms to the following specifications:
Voice Channels Two (four with plug-on module installed)
Transmission Levels TX: +13 to -17 dB TLP
1 dB steps between -17 db and +6 dB
7 dB step between +6 dB and +13 dB
RX: -17 to +7 dB TLP, 1 dB steps
Frequency Response 300 to 3400 Hz (+
1.0 dB)
4-wire Impedance 600
Ω
2-wire Impedance 600
Ω + 2.15 µF
2-wire ERL >
20 dB
2-wire SRL >
15 dB
THL ERL >25 dB
THL SRL >20 dB
Longitudinal Bal >52 dB
RX Idle Channel Noise <20 dBrnc
TX Idle Channel Noise <20 dBrnc
Operating Temperature
0-50
°C, 95% relative humidity, noncondensing
Connector RJ-45
Tests • Power-on circuit test
• Signal bits monitoring and setting
• 1-kHz test tone generation
• Settable E-lead port output state
• Analog bidirectional loopback, controlled
from front panel (all versions). Also, by
2713-Hz control tone from the network side
(L3 versions only). Control tone operation is
similar to AT&T PUB 43004, with tone level
-24 dBm to -3 dBm. (This feature operates in
TO mode only.)