The SRT file extension is related to ringtone file format for Sagem mobile phones.
SRT file extension - Sagem ringtone format
What is srt file? How to open srt files?
The SRT file extension is associated with mobile phones developed by a French company called Sagem. The .srt file stores custom ringtone that can be imported to Sagem phone.
Sagem stop developing of mobile phones in 2005.