Technical Description
5.6 Software Management
Software can be upgraded both locally and remotely. Software upgrade utilizes
a local or remote FTP server to distribute the software to the NE. An FTP
server is provided on the MINI-LINK Service Software CD used when installing
software on site.
The MINI-LINK TN R4 system software consists of different software modules
for different applications.
All traffic continues while the software is being loaded. During the execution of
the software download a progress indication is provided in the user interface.
When the download is completed, the new software and the previous software
version are stored on the unit.
Performing a warm restart of the NE activates the new software version. A
warm restart only affects the control system. This restart can be performed
immediately or scheduled at a later time. The restart, depending on the new
functionality, may influence the traffic. When the warm restart with the new
software is completed, the NE will wait for a “Commit” command from the
management system. When “Commit” is received, the software upgrade
process is completed.
The previous software revision remains stored on the unit in case a rollback is
required. This may be the case if something goes wrong during the software
upgrade or if no “Commit” is received within 15 minutes after the restart.
If plug-in units with old software versions are inserted into the NE, they can
be automatically upgraded.
5.7 Data Communication Network (DCN)
This section covers the DCN functions provided by MINI-LINK TN R4.
The MINI-LINK DCN Guideline ETSI gives recommendations on DCN
implementation, covering the different MINI-LINK product families.
5.7.1 IP Services
The following standard external IP network services are supported:
• All clocks, used for example for time stamping alarms and events, can be
synchronized with a Network Time Protocol (NTP) server.
• File Transfer Protocol (FTP) is used as a file transfer mechanism for
software upgrade, and for backup and restore of system configuration.
• Domain Name System (DNS) enables the use of host names.
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