Instruction manual

Section 2 Engineering Guidelines Total Access 850 System Manual
42 © 2004 ADTRAN, Inc. 64203376L1-1B
Interface Pinout
Figure 9 shows the pinout connection for the amphenol connector. See Figure 7 on page 38 for closer detail.
Figure 9. Quad FXS Connector Pin Assignments
Specifications
Table 21 provides the detailed specifications for the Total Access 850 Quad FXS Module.
Table 21. Quad FXS Module Specifications
Power
6 W (off-hook)
Loop Current
23 mA (nominal)
20 mA (minimum)
Loop Resistance
1200 Ω (nominal)
1650 Ω (maximum) – 900 Ω/1350 Ω (line), 300 Ω (phone)
Terminating
Impedance
900 Ω + 2.16 µF
600 Ω + 2.16 µF
900 Ω
600 Ω
Return Loss
900 Ω + 2.16 µF
ERL > 28 dB
SRL > 20 dB
Trans Hybrid Loss
900 Ω + 2.16 µF
ERL > 28 dB
SRL > 20 dB
Longitudinal
Balance
200, 500, and 1000 Hz: > 58 dB min, > 63 dB avg
3000 Hz: > 53 dB min, > 58 dB avg
Frequency
Response
300 to 3400 Hz: -0.5 dB and 1.0 dB
Idle Channel Noise
< 20 dBrnC
261
272
283
29
4
305
316
327
33
8
349
3510
3611
3712
3813
3914
4015
4116
4217
4318
4419
4520
4621
4722
4823
4924
5025
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
R
T
NC
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
50 PIN
AMP
RECEPTACLE
Slot 1
Slot 2
Slot 3
Slot 4
Slot 5
T
T
R
T
T
R
R
Slot 6
P
P
P
P
Circuit 1
Circuit 2
Circuit 3
Circuit 4
Circuit 1
Circuit 2
Circuit 3
Circuit 4
Circuit 1
Circuit 2
Circuit 3
Circuit 4
Circuit 1
Circuit 2
Circuit 3
Circuit 4
Circuit 1
Circuit 2
Circuit 3
Circuit 4
Circuit 1
Circuit 2
Circuit 3
Circuit 4
R