Owner's manual

Functional description 113
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.
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.
Maintenance communication
Maintenance communication is the exchange of control and status data
between line or trunk cards and the CPU. Maintenance data is transported
through the card LAN link.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
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