Nortel Networks Circuit Card 311 - Manual (Page 945)

Architecture 945
The connection between the PRI2 and the on-board D-Channel Handler
Interface card is also available at the MDF connector. The signals confirm
to the EIA RS-422 standard. Connections would not be made to these
pins for normal on-board DCHI operation. They are available for future or
special applications.
The connection between the PRI2 and the on-board D-channel Handler
Interface card is also available at the MDF connector. Connections are
made to these pins for normal on-board DCHI operation. They can also be
used for future or special applications.
The signals conform to the EIA RS-422 standard.
Card-LAN interface
A Dual Port UART handles the functions of the serial ports for the Card-LAN
serial link and the echo canceller/test port interface. The echo/test interface
is an asynchronous 4800 bps 8-bit connected to port A of the UART. The
Card-LAN interface is an asynchronous 19.2 kbps 9 bit start/stop connected
to port B of the UART.
The connection to the echo canceler/test port is available at the
backplane/MDF connector. The signals at this port conform to the EIA
RS-232C standard.
A Dual Port UART handles the functions of the serial ports for the Card-LAN
serial link and the echo canceller/test port interface. The echo/test interface
is an asynchronous 4800 bps 8-bit connected to port A of the UART. The
card-LAN interface is an asynchronous 19.2 kbps 9 bit start/stop connected
to port B of the UART.
The connection to the echo canceler/test port is available at the
backplane/MDF connector. The signals at this port conform to the EIA
RS-232C.
A Dual Port UART handles the functions of the serial ports for the Card-LAN
serial link and the echo canceller/test port interface. The echo/test interface
is an asynchronous 4800 bps 8-bit connected to port A of the UART. The
Card-LAN interface is an asynchronous 19.2 kbps 9 bit start/stop connected
to port B of the UART.
The connection to the echo canceler/test port is available at the
backplane/MDF connector. The signals at this port conform to the EIA
RS-232C standard.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.