Table 54: OPS analog line card - electrical characteristics
Characteristic
Specification
Terminal impedance (TIMP)
600 or 900 ohms
Balance impedance (BIMP)
600 or 900 ohms, 3COM, or 3CM2
DC signaling loop length (max)
2300 ohm loop (including resistance of
telephone) with nominal battery of –48 V dc
Battery supply voltage
–42 to –52.5 V dc
Minimum detected loop current
16 mA
Ground potential difference
± 3 V
Line leakage
≥
30k ohms, tip-to-ring, tip-to-ground, ring-to-
ground
AC induction rejection
10 V rms, tip-to-ring, tip-to-ground, ring-to-ground
Power requirements
Table 55: OPS analog line card - power requirements
on page 126 shows the maximum power
consumed by the card from each system power supply.
Table 55: 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
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.
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 56: OPS analog line card - ringer limitations
on page 127.
NT1R20 Off-Premise Station Analog Line card
126 Circuit Card Reference
July 2011
Summary of Contents for 1000 Series
Page 1: ...Circuit Card Reference Nortel Communication Server 1000 7 0 NN43001 311 04 04 July 2011 ...
Page 20: ...20 Circuit Card Reference July 2011 ...
Page 30: ...Introduction 30 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 116: ...Option settings 116 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 143: ...Figure 25 CP PIV card front Physical description Circuit Card Reference July 2011 143 ...
Page 148: ...NT4N39AA CP Pentium IV Card 148 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 287: ...Figure 86 Clock Controller Option 3 Operation Circuit Card Reference July 2011 287 ...
Page 302: ...NT5K21 XMFC MFE card 302 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 346: ...NT6D80 MSDL card 346 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 353: ...Figure 96 NTDK16 DLC Functional description Circuit Card Reference July 2011 353 ...
Page 461: ...Figure 147 Paging trunk operation Applications Circuit Card Reference July 2011 461 ...
Page 462: ...NT8D15 E and M Trunk card 462 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 500: ...NTAK09 1 5 Mb DTI PRI card 500 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 512: ...NTAK10 2 0 Mb DTI card 512 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 534: ...NTAK79 2 0 Mb PRI card 534 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 550: ...NTBK22 MISP card 550 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 560: ...NTBK50 2 0 Mb PRI card 560 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 595: ...Figure 165 MGC block diagram Introduction Circuit Card Reference July 2011 595 ...
Page 662: ...NTRB21 DTI PRI DCH TMDI card 662 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 668: ...NTVQ01xx Media Card 668 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 700: ......