HOWTO Localized System Sound Files
NOTE: To obtain a set of sound files, we suggest a purchase from http://www.westany.com
After that, we need to have that file in tar.gz format.
We need to create a folder named "gb" at this path: /opt/pbxware/pw/var/lib/asterisk/sounds/ using mkdir gb.
Use scp -P 2020 /pathofyourUKfileonyourmachine/gb.tar.gz root@$IPaddressofyourPBXware:/opt/pbxware/pw/var/lib/asterisk/sounds/gb to transfer the resulting folder.
It is necessary to transfer all files from every folder inside british-english-rachael-latest-codec.tar.gz -> sounds -> all folders -> en_GB to /opt/pbxware/pw/var/lib/asterisk/sounds/gb.
Create the folders digits and letters in the directory /opt/pbxware/pw/var/lib/asterisk/sounds/gb
Move the contents from all folders of british-english-rachael-latest-codec.tar.gz → sounds → digits (or letters) → en_GB into /opt/pbxware/pw/var/lib/asterisk/sounds/gb/digits (or letters).
The folder permissions must be set as follows:

It is now necessary to go to Master Tenant → Protocols → Default Language and set it to gb

Under Additional Config, set this in case it doesn’t work with the default language:

After that, it is necessary to restart the system with /opt/pbxware/sh/pbxware restart.