code.gitea.io/gitea@v1.21.7/options/license/Asterisk-exception (about)

     1  In addition, when this program is distributed with Asterisk in any 
     2  form that would qualify as a 'combined work' or as a 'derivative work' 
     3  (but not mere aggregation), you can redistribute and/or modify the 
     4  combination under the terms of the license provided with that copy 
     5  of Asterisk, instead of the license terms granted here.