Nortel Networks 1000 - Manual (Page 461)

Functional description 461
Card control functions
Control functions are provided by the following:
• a microcontroller
• a card LAN interface
•
signaling and control circuits on the analog message waiting line card
Microcontroller
The analog message waiting line card contains a microcontroller that
controls the internal operation of the card and the serial card LAN link to
the controller card. The microcontroller controls the following:
• reporting to the CE CP through the card LAN link:
— card identification (card type, vintage, and serial number)
— firmware version
— self-test status
— programmed configuration status
• receipt and implementation of card configuration:
— programming of the codecs
— enabling/disabling of individual units or entire card
— programming of input/output interface control circuits for
administration of line interface unit operation
— enabling/disabling of an interrupted dial tone to indicate call waiting
— maintenance diagnostics
— transmission loss levels
Signaling and control
The signaling and control portion of the card provides circuits that
establish, supervise, and take down call connections. These circuits work
with the system CP to operate the line interface circuits during calls. The
circuits receive outgoing call signaling messages from the CP and return
incoming call status information over the DS-30X network loop.
Card interfaces
The analog message waiting line card passes voice and signaling data
over DS-30X loops and maintenance data over the card LAN link. These
interfaces are discussed in
“Intelligent Peripheral Equipment” (page 21) .
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.