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Overall System Maintenance 197
vcx-os-query
This produces output resembling the following:
OS Version Partition Label Status
A 1.4.0 /dev/sda2 /A
B 2.1.1 /dev/sda3 /B active
The order of the O/S versions (A or B) may be reversed depending on
the upgrade history of the system. The active version of the O/S
reflects the version shipping with VCX 5.2.
c Select the 1.4.0 O/S version for use at the next reboot by entering:
vcx-os-switch 1.4.0
To confirm that this is selected, re-enter the vcx-os-query command.
The 1.4.0 status is listed as selected as shown below.
OS Version Partition Label Status
A 1.4.0 /dev/sda2 /A selected
B 2.1.1 /dev/sda3 /B active
7 Downgrade the telephone SIP Phone application. The SIP phone
application is downgraded independently from the rest of the VCX
system.
a Go to the directory that was automatically created during the 5.2
upgrade:
cd /opt/installtemp/upgrade-5.2
b Remove SIP Phone Application:
vcx-remove --allmatches sipPhApp
c Install the 5.0.2c version of the SIP Phone Application:
vcx-install sipPhApp-5.0.2c.rpm
8 Reboot the VCX system by entering:
reboot
The system reboots to VCX Linux 1.4.0 and starts up services of version
5.0.2c.
Any version of the VCX software is not removed from the system by using
this procedure.