This driver was nowhere on the Internet, but I finally found it on some Vaio Restore CD's.
It is the A3 model of the GVC modem, lucent chipset 1648T00.
The following files are found inside the driver download file.
|LTVCD.VXD||12.4 KB||26 Jan 2000|
|LTDF.INF||46.2 KB||8 Mar 2000|
|LTSETUP2.DLL||63.0 KB||24 Jan 2000|
|SETUP.EXE||64.5 KB||24 Jan 2000|
|LTSETUP.INI||1.7 KB||25 Jan 2000|
|LTMODEM.VXD||810.2 KB||26 Jan 2000|
|LTSETUP1.DLL||28.2 KB||4 Jan 2000|
|ltdf.cat||7.2 KB||28 Mar 2000|
|LTCOM.VXD||4.8 KB||26 Jan 2000|
|LTREMOVE.EXE||53.2 KB||24 Jan 2000|
|LTSETUP3.EXE||7.7 KB||9 Sep 1999|