Hitachi GR2000 Series - Manual (Page 56)

Hitachi Gigabit Router GR2000 Series Enhanced Version Operations - Device Management Overview
1-6 GR2K-GA-0015
Ver. 07-02
(c) Tera Term Pro (Version 2.3)
An illegal character may occur due to an inconsistency in communication speed
when the console is connected after the router operates and when Tera Term Pro
is started as communication software. If this occurs, the communication speed
can be made to coincide by issuing a brake signal from Tera Term Pro. (In Tera
Term Pro, a brake signal can be issued by simultaneously pressing the [Alt] and
[B] keys.) The number of issued brake signal times required until the
communication speed coincides varies depending on the setting contents of Tera
Term Pro and the communication speed that the router recognized previously.
When the contents of the displayed character are long, the display is turned back
at the end of the screen if the number of characters that can be displayed in one
line is few. The display of an item name and contents may be shifted in this case.
Change the screen size by setting communication software and increase the
number of characters that can be displayed in one line.
1.2.1.4 RS-232C
The serial interface of the router during RM serial connection (RS-232C) is D-Sub
9-pin. Use a cross-cable when connecting the serial interface with a console. For
example, use a D-Sub 9-pin cross cable for connecting AT-compatible machines in
serial when connecting an AT-compatible machine and the router. The connection
specifications of a cross cable are shown in the figure below.
Figure 1-3 Connection specifications of cross-cable
1.2.1.5 Modem
Prepare a model or a straight cable for connecting a modem and AT-compatible
machine when performing dial-up IP connection using AUX supplied for GR2000-4S,
GR2000-6H, GR2000-10H and GR2000-20H (see Section 4.8, “Setup of Dial-Up
Networking with Remote Operation Terminal”) or when performing RM serial
connection. The modem connected to the router should be set to the automatic
incoming state. In the router, a modem cannot be set, so connect to the PC for
setting.
Set as shown in the table below using an AT command referring to the manual
supplied with the modem. For a modem with an extended AT command, a command
that is different from the command given in the example below may be used.