Have played with several languages in Asterisk - by using the SetLanguage() command in the extensions.conf. The scenario is that I do not want every caller to use the same language, although they do use the same extension. E.g. H323 users can have a different language than SIP user. Read in several threads that the language can be set in the conf. files. I have tried different syntaxes but it did not work -> what should I change (and where) in order to realise that all e.g. H323 callers will another language? Thanks Jeroen