Nortel Networks Video Gaming Accessories 553-3001-211 Manual De Usuario
NT1R20 Off-Premise Station Analog Line card
Page 165 of 894
Power requirements
Table 64 shows the maximum power consumed by the card from each system
power supply.
power supply.
Foreign and surge voltage protection
The NT1R20 OPS analog line card meets UL-1489 and CS03 over-voltage
(power cross) specifications and FCC Part 68 requirements for hazardous and
surge voltage limits.
(power cross) specifications and FCC Part 68 requirements for hazardous and
surge voltage limits.
Ringer limitations
The OPS line card supports up to three NE-C4A (3 REN) ringers on each line
for either ONS or OPS applications. See Table 65.
for either ONS or OPS applications. See Table 65.
Table 64
OPS analog line card – power requirements
OPS analog line card – power requirements
Voltage
Tolerance
Current (max.)
±15.0 V dc
± 5%
150 mA
+8.5 V dc
± 2%
200 mA
+5.0 V dc
± 5%
100 mA
–48.0 V dc
± 5%
350 mA
Table 65
OPS analog line card – ringer limitations (Part 1 of 2)
OPS analog line card – ringer limitations (Part 1 of 2)
ONS Loop Range
Maximum Number of
Ringers (REN)
Ringers (REN)
0–10 ohms
3
> 10–460 ohms
2