This is a small external usb isdn modem common in South Africa. I eventually found this driver on mecers old ftp site. The chip utilised is a ST5481D. I am currently writing this on XP Pro using this driver. Extract to a directory & then do a local install using that directory.
The following files are found inside the driver download file.
|UTA128_MNL__and_more/UTA128_MNL_.pdf||735.6 KB||13 Nov 2006|
|UTA128_MNL__and_more/UTA128_QIG_.pdf||294.4 KB||13 Nov 2006|