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Configuring the CS 1000E CP PM Call Server Page 157 of 466
Communication Server 1000E Installation and Commissioning
Configuring pseudo-terminals (PTYs)
CS 1000E provides two ports (COM1 and COM2) on the CPU. A Terminal
Server is used to provide additional serial ports for specific applications, such
as, CTY, MCT, PMS, and TRF. Each configured Terminal Server serial port
automatically starts an rlogin session with a user ID to a dedicated pseudo
(PTY) port in the CS 1000E system. Nortel recommends configuring at least
two PTYs for general use (rlogin sessions with no user ID). In practice, a
maximum of 14 PTYs can be used, leaving 2 TTYs for COM1 and COM2 on
the CPU card. Login to PTY is case sensitive.
Every PTY configured is given a user ID "PTYx", where x is the port number
assigned to the PORT prompt. If no input is entered for the PORT prompt, the
default value is the same as the TTY number. Nortel recommends using the
default value for easy management. When an rlogin session is initiated with
a user ID, the Call Server searches for a free PTY with a matching user ID.
The search starts with the highest configured PTY number and progresses in
descending order of the PTY number. If no free PTY with a matching user ID
is found, the connection is refused. In this case, TTY012 message is printed
on the administration terminal. When an rlogin session is initiated with no
user ID specified, the Call Server searches for a free PTY. The search starts
from the lowest configured PTY number and progresses in ascending order
of the PTY number. The first available PTY is used to open the rlogin session.
In order to minimize the probability of having a PTY configured for a specific
application being used for general rlogin sessions, PTYs of specific
applications are configured to start with the highest TTY number, such as 15,
and progress in descending order. PTYs for general use are configured to start
with the lowest number and progress in ascending order.
Follow Procedure 32 to configure pseudo-terminals.
Procedure 32
Configuring pseudo-terminals (PTYs)
Nortel recommends that at least two PTYs be configured. A maximum of four
PTYs can be allocated on a CS 1000E system.
1 Enter the command:
LD 17