Nortel Networks 1000 - Manual (Page 465)

Electrical specifications 465
Input impedance
The impedance at tip and ring is 600 ohms with a return loss of:
• 20 dB for 200-500 Hz
• 26 dB for 500-3400 Hz
Input impedance
The impedance at tip and ring is 600 ohms with a return loss of:
• 20 dB for 200 – 500 Hz
•
26 dB for 500 – 3400 Hz
Insertion loss
On a station line-to-line connection, the total insertion loss at 1 kHz is 6
dB + 1 dB. This is arranged as 3.5 dB loss for analog to PCM, and 2.5 dB
loss for PCM to analog.
Insertion loss
On a station line-to-line connection, the total insertion loss at 1 kHz is 6
dB + 1 dB. This is arranged as 3.5 dB loss for analog to PCM, and 2.5 dB
loss for PCM to analog.
Insertion loss
On a station line-to-line connection, the total insertion loss at 1 kHz is 6
dB + 1 dB. This is arranged as 3.5 dB loss for analog to PCM, and 2.5 dB
loss for PCM to analog.
Frequency response
The loss values in Table 186 "Analog message waiting line card -
frequency response" (page 465) are measured relative to the loss at 1
kHz.
Table 186
Analog message waiting line card - frequency response
Frequency (Hz) Minimum (dB) Maximum (dB)
60 20.0 -
200 0.0 5.0
300 –0.5 1.0
3000 –0.5 1.0
3200 –0.5 1.5
3400 0.0 3.0
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.