Nortel Networks 1000 - Manual (Page 833)

Architecture 833
•
supporting National and International bits in time slot 0
• on-board clock controller
• onboard D-channel interface
•
32 software-selectable Tx & Rx Pad values
•
conversion of PCM commanding Laws (A-A, u-u, A-u, u-A)
• Card-LAN for maintenance communications
The NTAK79 card provides the following features and functions:
•
recovery of the 2.048 kbps data by the CEPT receiver, at signal levels
which have been attenuated by up 10 dB
•
control of CEPT line density using HDB3 which provides 64 kbps clear
channel
• performance monitoring of the receive carrier by means of Bipolar
Violations (BPV), Slips, CRC-4 (CRC), and Frame Bit Errors (FBER)
• monitoring of receive carrier alarms including AIS, LOS, and RAI
• transmission of remote alarm when instructed
•
slip-buffering receive messages
• supporting National and International bits in time slot 0
• on-board clock controller
•
onboard D-channel interface
•
32 software-selectable Tx & Rx Pad values
• conversion of PCM commanding Laws (A-A, u-u, A-u, u-A)
•
Card-LAN for maintenance communications
Architecture
The main functional blocks of the NTAK79 architecture include:
• DS-30X interface
• A07 signaling interface
•
digital pad
•
carrier interface
• CEPT transceiver
• SLIP control
•
D-channel support interface
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
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.