Nortel Networks 1000 - Manual (Page 875)

Architecture 875
•
monitoring of receive carrier alarms including AIS, LOS, and RAI
• transmission of remote alarm when instructed
• slip-buffering receive messages
•
support of National and International bits in timeslot 0
•
clock controller daughterboard
• D-channel interface daughterboard
• downloadable D-channel handler daughterboard
•
32 software-selectable Tx and 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 NTBK50 architecture are:
•
DS-30X interface
• A07 signaling interface
• digital pad
•
carrier interface
• CEPT transceiver
• SLIP control
•
D-channel support interface
•
clock controller interface
• Card-LAN / echo / test port interface
• 80C51FA Microcontroller
The main functional blocks of the NTBK50 architecture include:
• DS-30X interface
• A07 signaling interface
• digital pad
•
carrier interface
• CEPT transceiver
• SLIP control
•
D-channel support interface
•
clock controller interface
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
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