Imagine the scenario:
- a guest is french, phone instructions must be in french
- a guest is spanish, phone instructions must be in spanish
So, i edited the file sip_additional.conf and for example to extension 1111 i set language to fr and to extension 2222 i set language to es.
After reload asterisk, it works. But if an apply on GUI is performed, it will rebuild sip_additional.conf file and will lost my language configurations.
Best Regards, Ricardo