Chapter 1 Overview
The Signaling Gateway provides SNMP V1 support to allow the reporting of alarms to an SNMP manager. See Chapter 10, “SS7G2x SNMP MIB” for more information.
The Signaling Gateway has alarm indicators on the front panel and alarm relays for connection to an integrated management system.
1.7Configuration and Program Storage
All configuration data is stored on hard disk and is automatically recovered after system restart. Configuration data may optionally be backed up to a remote computer, previously
All operating software is stored on hard disk and is automatically initiated after system restart. The operating software can be updated either by reading a new software release from CD ROM or by FTP transfer from a remote computer. In both cases, software update is initiated by MML command. See Section 4.11, “Updating System Software” on page 24 for details. Following a software update, the Signaling Gateway automatically uses the saved configuration data so that there is no need to reenter the configuration parameters.
1.8IP Security
The Signaling Gateway offers a number of security features to protect it from unwarranted access on its IP interface. It is recommended that the user always enable the optional password protection on the management interface port and on the FTP server port (if used).
For additional security, the Signaling Gateway is also equipped to support telnet and FTP access using a Secure Shell (SSH).
Unused ports are disabled to increase security against unintentional or malicious interference.
Additional security may be gained by separating management and signaling IP traffic. This can be achieved by configuring specific Ethernet ports for traffic and utilizing other Ethernet ports for system management.
It should be understood that while the Signaling Gateway has been designed with security in mind, it is recommended that Signaling Gateway accessibility over IP is restricted to as small a network as possible. If the unit is accessible by third parties, the use of a
1.9Functional Summary
The functional summary is described in the following topics:
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Signaling
Configuration Model
Cross Connections
Monitoring
Remote Data Centres
Alarm Log
M3UA Backhaul Operation
M2PA Longhaul Operation
Dual Operation
Default Routing
1.9.1Signaling
The Signaling Gateway supports the Message Transfer Part (MTP) in accordance with ITU Recommendations Q.700, Q.704 and Q.707 and ANSI operation in accordance with ANSI T1.111.
When a link set contains two or more signaling links, the Signaling Gateway supports load sharing and the full changeover and changeback procedures in accordance with
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