Power Requirements - Avaya Nortel Communication Server 1000 Reference

Characteristic
Far-end battery
Near-end battery
Ground potential difference
Line leakage between E lead
and ground
Effective loss
Terminating impedance
Balance impedance
Table 188: Electrical characteristics of trunk cards
Characteristic
Nominal impedance
Signaling range
Signaling type
Far-end battery
Near-end battery
Minimum loop current
Ground potential difference
Low DC loop resistance
during outpulsing
High DC loop resistance
Line leakage
Effective loss

Power requirements

Table 189: Power requirements
Trunk card.
Circuit Card Reference
4-wire trunk
–42 to –52.5 V dc
–42.75 to –52.5 V dc
±10 V dc
Š20K¾
See pad table (Table 194:
Pad switching algorithm
page 458)
600 ohms
N/A
DID Trunk
600 or 900 ohms, (selected
by software)
2450 ohms
Loop
-42 to -52.5 V
N/A
N/A
+ 10 V
N/A
N/A
Equal to or greater than 30
kS (Tip to Ring, Tip to GND,
Ring to GND).
See pad table
on page 452 lists the power requirements for the E and M
Electrical specifications
2-wire trunk
–42 to –52.5 V dc
–42.75 to –52.5 V dc
±10 V dc
Š20K¾
See pad table (Table 194: Pad
on switching algorithm
page 458)
600 ohms
600 ohms
CO trunk
600 or 900 ohms, (selected by
software)
1700 ohms
Ground or loop start
-42 to -52.5 V
-42.75 to -52.5 V
20 mA
+ 3 V
300 ohms
Ground start equal to or
greater than 30 kS. Loop start
equal to or greater than 5 MS
Equal to or greater than 30 kS
(Tip to Ring, Tip to GND, Ring
to GND)
See pad table
on
July 2011 451