Nortel Networks Circuit Card 311 - Manual (Page 550)

550 NT8D09 Analog Message Waiting Line card
Table 213
NT8D09 Analog Message Waiting Line Card frequency response
Frequency Minimum Maximum
60 Hz 20.0 dB —
200 Hz 0.0 dB 5.0 dB
300 Hz –0.5 dB 1.0 dB
3000 Hz –0.5 dB 1.0 dB
3200 Hz –0.5 dB 1.5 dB
3400 Hz 0.0 dB 3.0 dB
Frequency response
The loss values in Table 214 "NT8D09 Analog Message Waiting Line Card
frequency response" (page 550) are measured relative to the loss at 1 kHz.
Table 214
NT8D09 Analog Message Waiting Line Card frequency response
Frequency Minimum Maximum
60 Hz 20.0 dB --
200 Hz 0.0 dB 5.0 dB
300 Hz -0.5 dB 1.0 dB
3000 Hz -0.5 dB 1.0 dB
3200 Hz -0.5 dB 1.5 dB
3400 Hz 0.0 dB 3.0 dB
Message channel noise
The message channel noise C-weighted (dBrnC) on 95 percent of the
connections (line to line) with both ends terminated in 600 ohms does not
exceed 20 dBrnC.
Table 215 "NT8D09 Analog Message Waiting Line card technical summary"
(page 550)
provides a technical summary of the analog message waiting
line card.
Table 215
NT8D09 Analog Message Waiting Line card technical summary
Impedance 600 ohms
Loop limit (excluding set) 1000 ohms at nominal -48 V (excluding set)
Leakage resistance 30,000 ohms
Ring trip During silent or ringing intervals
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
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