182 NT5D11 and NT5D14 Lineside T1 Interface cards
The circuits receive outgoing call signaling messages from the controller
and return incoming call status information to the controller over the DS-30X
network loop.
Card control functions
Control functions are provided by a microcontroller and a Card LAN link on
the Lineside T1 card. A sanity timer is provided to automatically reset the
card if the microcontroller stops functioning for any reason.
Control functions are provided by a microcontroller and a Card LAN link on
the Lineside T1 card. A sanity timer is provided to automatically reset the
card if the microcontroller stops functioning for any reason.
Control functions are provided by a microcontroller and a Card LAN link on
the Lineside T1 card. A sanity timer is provided to automatically reset the
card if the microcontroller stops functioning for any reason.
Microcontrollers
The Lineside T1 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 CPU via the card LAN link:
— card identification (card type, vintage, serial number)
— firmware version
— self-test results
— programmed unit parameter status
•receipt and implementation of card configuration:
— control of the T1 line interface
— enabling/disabling of individual units or entire card
— programming of loop interface control circuits for administration of
channel operation
— maintenance diagnostics
•interface with the line card circuit:
— converts on/off-hook, and ringer control messages from the DS-30X
loop into A/B bit manipulations for each time slot in theT1 data
stream, using robbed bit signaling.
•the front panel LED when the card is enabled or disabled by instructions
from the NT8D01 controller card.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright© 2003-2008, Nor tel Networks
.