Axel AX4000 User's Manual User Manual

Page 31

Setting-Up the Office Server in Interactive Mode

AXEL Office Server

Then, the telnet client service must be configured for the Office Server serial
port. Select [Serial Lines]

→[Line X]→[Network Service] and enter the

following parameters:

- Service Mode: enter the keyword ‘client',
- Service Type: enter the keyword ‘telnet',
- TCP Port: numeric value associated with the telnet service on the target

host (generally 23),

- Host Name / IP Address: host name (or IP address) to which the serial

terminal will be connected.

- Terminal Type: this character string is the value of the UNIX TERM

environment variable,

- Auto Connection: two values:

- 'y': a telnet session is automatically opened when the Office Server

is powered or when the previous telnet session is closed,

- 'n': a telnet session is opened when any key is pressed on the

serial terminal.

- Backup Host Used: possible emergency host (see Chapter 2.6).
- TCP Keepalive Timeout: the keepalive mechanism allows the Office

Server to regularly check its TCP/IP connection status.

IMPORTANT: please, read appendix A.8 to set-up the keepalive

mechanism and to understand consequences of the keepalive use
(especially for routers).

2.5.3 - Connecting other Devices on Unix

Note: if signal control (DTR/DSR, RTS/CTS or DCD) is needed, this device can
be treated in the same way than a modem. So, the solution given on the next
chapter is more suitable.

Two network services allow bi-directional communication with any peripheral:

- tty client: the Office Server opens a connection to the target host. This

connection can be automatically generated when the Office Server is
turned on or when any character is received at the Office Server serial
port. This connection can be set to close if no characters are received
within a specified time.

- tty server: the Office Server waits for a connection request from a host.

This connection can only be closed by the host.