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Architecture
DS-30X interface
553-3001-211
Standard 3.00
NTBK50 2.0 Mb PRI card
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monitoring of receive carrier alarms including AIS, LOS, and RAI
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transmission of remote alarm when instructed
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slip-buffering receive messages
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support of National and International bits in timeslot 0
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clock controller daughterboard
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D-channel interface daughterboard
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downloadable D-channel handler daughterboard
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32 software-selectable Tx and Rx Pad values
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conversion of PCM commanding Laws (A-A, u-u, A-u, u-A)
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Card-LAN for maintenance communication
The main functional blocks of the NTBK50 architecture are:
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DS-30X interface
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A07 signaling interface
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digital pad
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carrier interface
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CEPT transceiver
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SLIP control
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D-channel support interface
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clock controller interface
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Card-LAN / echo / test port interface
•
80C51FA Microcontroller
NTBK50 interfaces to one DS-30X bus which contains 32-byte interleaved
timeslots operating at 2.56 Mb. Each timeslot contains 10 bits in A10
August 2005