One-button system reset
When no SD card or USB flash disk is inserted into the device, or an SD card or a USB flash disk is inserted but no
software versions or configuration files for upgrade exist, press the FUNC multi-functional button to reset the system.
The system will restart based on the original software versions.
One-button upgrade of software versions and configuration files
When an SD card or a USB flash disk is inserted into the device, press the FUNC button. Then, the system searches
for the installation packages and configuration files that are applicable to the current device in the root directories of
the SD card and USB flash disk in sequence. After successfully finding the corresponding installation packages and
configuration files, the system checks the validity of the files and then upgrades the device by using the installation
packages and configuration files. After the upgrade, the system resets and restarts based on the new software
versions and configuration files.
When a storage medium is inserted, the system scans for an SD card first. If no SD card is inserted or the
inserted SD card does not contain applicable installation packages or configuration files, the system scans
for a USB flash drive. If neither the inserted SD card nor the USB flash drive contains applicable installation
packages or configuration files, the software versions and configuration files are not upgraded. Only the
system resets, and restarts based on the original software versions and configuration files.
One-button upgrade of the software version must strictly follow the “Configuring Reliability” chapter in the
related software configuration guide. After the system has scanned an SD card or USB flash drive, press the
FUNC button shortly.
About SIC Cards
This section describes the features of SIC modules supported by the RSR20-14E series router.
SIC-1HS Synchronous Interface Card
Product model: SIC-1HS
Image and Indicators
Figure 1-16: SIC-1HS high-speed synchronous serial interface card
The SIC-1HS is a Type B SIC, which can be inserted in a slot marked with “B”.
Each card has an interface status indicator (
LINK
indicator) and the card
Ready
indicator.
The following table describes LED indicators.
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