Nortel Networks NN43001-314 - Manual (Page 26)

26 Overview
tolerance, the MGC is equipped with a clock reference input/output. The
clock reference input and output connections and cable detect are provided
through a 15-pin DSUB connector.
MGC Serial Ports
Each MGC installed in a CS 1000B provides the opportunity for 3 remote
SDIs. The maximum number of TTYs does not change. Therefore, after you
configure the maximum TTYs , no additional TTYs are supported.
The MGC has three serial ports SDI0, SDI1, and SDI2.
You can use serial ports for local debugging; or, you can configure the ports
in the MG 1000B Call Server as system terminals in LD 17.
During the initial configuration of the MGC, you must connect to either
SDI0 or SDI1 to access the installation menu. Only SDI0 has full modem
support, as SDI1 and SDI2 have no hardware flow control (limitation of
the three-port cable used).
SDI2 is not available during the MGC bootup; therefore, you cannot use
it to access the installation menus.
Unlike the NTDK20xx SSC card, all SDI ports on the MGC are configured
by using shipped software. No DIP switches are on the MGC for configuring
the baud rate of SDI0.
Single CPU Implications
Single CPU installations do not require dynamic binding of TTY ports to
the active CPU because only one CPU exists. Therefore, single-CPU
installations can use the Call Server TTY ports or the MGC remote TTY
ports.
Dual CPU Implications
MG 1000B uses a terminal server to ensure that serial ports are always
bound to the active CPU. The remote SDIs on the MGC provide similar
functionality. Each MGC provides three SDI ports that you can provision
in the softswitch as TTYs.
Remote TTY provisioning is enhanced over the terminal server model. SDI
port provisioning is performed on the softswitch and does not require local
provisioning at the IPMG.
Terminal Server Support
The remote SDI feature on the MGC eliminates the need for a terminal
server.
Nortel Communication Server 1000
Branch Office Installation and Commissioning
NN43001-314 01.02 Standard
Release 5.0 20 June 2007
Copyright © 2007, Nortel Networks
.