Nortel Networks Circuit Card 311 - Manual (Page 941)

Architecture 941
attenuation requirements of CCITT recommendation G.742. This provides
jitter attenuation increasing from 0 dB to 60 dB over the frequency range
from about 6 Hz to 6 KHz.
The receiver extracts data and clock from an AMI (Alternate Mark Inversion)
coded signal and outputs clock and synchronized data. The receiver is
sensitive to signals over the entire range of cable lengths and requires
no equalization. The clock and data recovery meets or exceeds the
jitter specifications of the CCITT recommendation G.823, and the jitter
attenuation requirements of the CCITT recommendation G.742. This
provides jitter attenuation increasing from 0 dB to 60 dB over the frequency
range from about 6 Hz to 6 KHz.
Transmitter functions
The transmitter takes the binary (dual unipolar) data from the PCM
transceiver and produces bipolar pulses which conform to the CCITT
recommendation G.703 pulse shape.
The transmitter takes the binary (dual unipolar) data from the PCM
transceiver and produces bipolar pulses which conform to CCITT
recommendation G.703 pulse shape.
The transmitter takes the binary (dual unipolar) data from the PCM
transceiver and produces bipolar pulses which conform to the CCITT
recommendation G.703 pulse shape.
Loopbacks
The remote loopback function causes the device to transmit the same data
that it receives, using the jitter attenuated receive clock. The data is also
available at the receive data outputs. Local loopback causes the transmit
data and clock to appear at the receive clock and data outputs. This data is
also transmitted on the line unless transmit AIS is selected.
The remote loopback function causes the device to transmit the same
data that it receives using the jitter attenuated receive clock. The data is
additionally available at the receive data outputs. Local loopback causes
the transmit data and clock to appear at the receive clock and data outputs.
This data is also transmitted on the line unless transmit AIS is selected.
The remote loopback function causes the device to transmit the same data
that it receives, using the jitter attenuated receive clock. The data is also
available at the receive data outputs. Local loopback causes the transmit
data and clock to appear at the receive clock and data outputs. This data is
also transmitted on the line unless transmit AIS is selected.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.