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DSI Signaling Server SGW Mode User Manual Issue 5

For additional security, the Signaling Gateway supports the use of Secure Shell (SSH) access for FTP

operation. The user should use the CNSYS command to allow only secure FTP access to the unit, for

example:

CNSYS:SECURE=Y;

For a client on a UNIX operating system, the command sequence to log in for FTP access using the sftp

application is:

sftp -l ftp@<IP Address>

The user is also prompted to enter the password for the siuftp login account.

The secure connection to a unit can also be established from Windows

operating system using the

appropriate SSH software.

4.10 Backing Up System Software

The user can backup a binary copy of the Signaling Gateway software for restoration later.

4.10.1 Software Backup to a Remote Data Center

The procedure to perform a software backup to an Remote Data Center (RDC) is as follows:

1. The user should enter:

CNBUI: RDC=<rdc id>, DTYPE=SOFTWARE,

DIRECTORY=<subdirectory>,FILE=<filename>;

to request that the software be backed up to an RDC where the software file <filename.tgz> is stored in

a subdirectory in the ftproot.

Note: The user should not use a filename of “sgw” when backing up to the local RDC.

The unit indicates that the configuration has been successfully backed up by displaying the “EXECUTED”

response to the CNBUI command.

4.11 Updating System Software

The configuration data, stored in non-volatile memory, is not affected by a software update.

Normal operation of the software update procedure uses MML to update the software. While a software

update can take place while phone calls are in progress, the new software is not activated until the system is

restarted.

On completion of the software update, you must perform a system restart. MML commands are restricted to

the following “safe” mode commands: CNSYS, CNUPI, CNBUI and STRDP commands, as well as the alarm

log and configuration print commands.

If you abort the software update or the software update process fails, the system alarm “SW mismatch” is

activated and you are restricted to “safe” mode commands. If you restart the system in this state, the

system restarts in “safe” mode running limited configuration only software.

Note: Prior to performing a system upgrade, it is recommended that you make a backup of the system

configuration using the procedures specified in Section 4.12, “Backing Up Configuration Data” on

page 33.

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Dialogic DSI SS7MD Bedienungsanleitung Seite 31