If you want to disable Audio/Video for batch and only want to allow basic Lync features then following will be the command for this;
Import-Csv C:\LyncBatch.csv| ForEach-Object{$varUserId=$_.userid;set-CsUser -Identity $varUserid -AudioVideoDisabled $True}
In order to run this command, there should be a CSV file present in C:\ drive named as lyncbatch.csv. This file should have aliases of all the users accounts needs to disable Audio/video in following format(List should always start with userid) ;
userid
JDoe
MTaylor
BLee
After running this command the user can do chat and web conferencing but there will be no Audio/Video/Enterprise voice service available for user.