i had an issue that i was receiving timeout errors when using Search and Play for archived recordings. Seraching for a solution for this, i found out that for the Search and Play to be able to search archived calls, it must use the grep function of the SFTP. The SFTP must be Linux based and use the BASH shell, as the DASH shell has issues with spaces in searches. (i had a windows based SFTP server).
But im unable to find any document on how to set up a linux base SFTP server. Can anyone help?