20 Communicating with the system
Remote TTY
If a Media Gateway is using an SSC, the three SDI ports available on the
SSC card can be used as additional system TTYs. All applications on SDI
ports of the Call Server SSC, with the exception of a Low Speed Link (LSL),
are supported on the SDI ports of the MG 1000E SSC.
The purpose of a remote TTY is to access the Call Server from an MG
1000E. However, TTYs configured on the Call Server cannot access the
MG 1000E.
If the MG 1000E is configured to be survivable, the SDI ports of the MG
1000E SSC can be used during survival mode, and function as a TTY
connected to a standalone CS 1000. However, the TTY has no access to
either LD 43 or LD 143. In survival mode, the SDI ports of the MG 1000E
cannot be used to access the Call Server. Either port on the Signaling
Server can be used for remote access.
System terminal access for Media Gateway Controller
Each Media Gateway Controller (MGC) installed in a CS 1000E has 3
serial ports: SDI0, SDI1, and SDI2. SDI2 is not available during system
initialization and therefore cannot be used to access installation menus.
MGC serial ports can be used for local debug purposes or configured as
system terminals in LD 17. Unlike the Small System Controller (SSC) SDI
ports, all MGC SDI ports are configured through software. The MGC does
not have DIP switches. Furthermore, the remote SDI feature of the MGC
eliminates the need for a terminal server or TTY on a system with MGC
architecture.
See Communication Server 1000E Installation and Commissioning
(NN43041-310) for more detail about configuring MGC serial ports.
System terminal access for MG 1000T
When a system terminal is installed locally with an MG 1000T, it connects
to the SSC card on the MG 1000T Core through a rear SDI port. The
NTBK48 three-port cable can be connected to the SDI port to provide a total
of three serial connections.
When a system terminal is installed at a location that is remote from the MG
1000T, modems and a telephone line are required between the terminal
and the SDI port.
System terminals connected to the MG 1000T cannot be used to access the
Call Server or MG 1000E.
Nortel Communication Server 1000
Communication Server 1000E Maintenance
NN43041-700 01.02 Standard
Release 5.0 20 June 2007
Copyright © 2007, Nortel Networks
.