Nortel Networks Circuit Card 311 User Manual
Page 125
Functional description
125
Figure 22 "OPS analog line card - block diagram" (page 124)
shows a block
diagram of the major functions contained on the OPS analog line card.
Each of these functions are described on the following pages.
Card interfaces
The OPS analog line card passes voice and signaling data over DS-30X
loops and maintenance data over the card LAN link. See
Peripheral Equipment" (page 48)
for more details.
Voice and signaling interfaces
The eight line interfaces provided by the NT1R20 OPS analog line card
connect to conventional, 2-wire (tip and ring), analog line facilities. Incoming
analog voice and signaling information from a line facility is converted by
the OPS analog line card to digital form and routed to the CPU over DS-30
network loops. Conversely, digital voice and signaling information from the
CPU is sent over DS-30 network loops to the OPS analog line card where it
is converted to analog form and applied to the line facility.
The OPS analog line card uses only eight of the 30 available timeslots for
its eight line interfaces. The OPS analog line card can be configured in
software to format PCM data in the µ-law or A-law conventions.
Voice and signaling interfaces
The eight line interfaces provided by the NT1R20 OPS Analog Line Card
connect to conventional, 2-wire (tip and ring), analog line facilities. Incoming
analog voice and signaling information from a line facility is converted by the
NT1R20 OPS Analog Line Card to digital form and routed to the CS 1000
CPU over DS-30 network loops. Digital voice and signaling information from
the CPU is sent over DS-30 network loops to the NT1R20 OPS Analog Line
Card where it is converted to analog form and applied to the line facility.
The NT1R20 OPS Analog Line Card uses only eight of the 30 available
timeslots for its eight line interfaces. The NT1R20 OPS Analog Line Card
can be configured in software to format PCM data in the Mu-Law or A-Law
conventions.
Voice and signaling interfaces
The eight line interfaces provided by the OPS analog line card connect to
conventional, 2-wire (tip and ring), analog line facilities. Incoming analog
voice and signaling information from a line facility is converted by the OPS
analog line card to digital form and routed to the CPU over DS-30 network
loops. Conversely, digital voice and signaling information from the CPU
is sent over DS-30 network loops to the OPS analog line card where it is
converted to analog form and applied to the line facility.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
01.04
Standard
Release 5.0
23 May 2008
Copyright © 2003-2008, Nortel Networks
.