Nortel-networks Circuit Card Manual de usuario Pagina 65

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Overview Page 65 of 906
Circuit Card Description and Installation
The switch communicates with IPE modules over two separate interfaces.
Voice and signaling data are sent and received over DS-30X loops and
maintenance data is sent over a separate asynchronous communication link
called the card LAN link.
Signaling data is information directly related to the operation of the telephone
line. Some examples of signaling commands are as follows:
off hook/on hook
ringing signal on/off
message waiting lamp on/off
Maintenance data is data relating to the configuration and operation of the
IPE card, and is carried on the card LAN link. Some examples of maintenance
data are as follows:
polling
reporting of self-test status
CPU initiated card reset
reporting of card ID (card type and hardware vintage)
reporting of firmware version
downloading trunk interface unit configuration
reporting of trunk interface unit configuration
enabling/disabling of the DS-30X network loop bus
reporting of card status
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