Nortel Circuit Card 311 Reference page 888

888 NTAK10 2.0 Mb DTI card
Receive data
To receive data, PCM/Data from the carrier interface is converted from serial
to parallel, is buffered, and is fed to the pad prom. It then sent onto the
DS-30X interface, where signaling information from the signaling interface
circuitry is multiplexed.
To receive data, PCM/Data from the carrier interface is converted from serial
to parallel, is buffered, and is fed to the pad prom. It then sent onto the
DS 30X inteface, where signaling information from the signaling interface
circuitry is multiplexed.
DS-30X microprocessor
The DS-30X is a utility processor, responsible for the following tasks:
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The DS-30X is a utility processor, responsible for the following tasks:
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Copyright © 2003-2008, Nortel Networks
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controlling the DS-30X interface
receiving and decoding of messages and taking appropriate action
transmitting TS16 messages to the TS16 microprocessor
receiving TS16 messages from the TS16 microprocessor and passing
these messages to the A07
providing the 19.2 Kbps serial interface to the Card-LAN
controlling LEDs
downloading Local Calling Areas (LCAs)
monitoring errors and alarms
detecting the change of state in TS0, and outputting TS0 data
counting bipolar violations, slips, PLL alarms, frame-alignment errors,
and CRC-4 errors
monitoring the status of frame alignment and multiframe alignment
detecting and reporting of alarm indication signals (AIS)
updating of per channel loopback registers
controlling the far-end loopback and digroup loopback functions
controlling the DS-30X interface
receiving and decoding of messages and taking appropriate action
transmitting TS16 messages to the TS16 microprocessor
receiving TS16 messages from the TS16 microprocessor and passing
these messages to the A07
providing the 19.2 Kbps serial interface to the Card-LAN
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008