A 281 file extension is related to the Thomson Speed Touch DSL modem firmware updates.
There is one other file type using
the 281 file extension!
.281 - ASM MD86 data
281 file extension - Thomson Speed Touch DSL modem firmware update
What is 281 file? How to open 281 files?
File type specification:
The 281 file extension is associated with the Speed Touch, a DSL modem device developed by the Thompson (formerly Alcatel).
The 281 file contains firmware update for Thomson (Alcatel) Speed Touch DSL modems.
This 281 file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.