Microsoft Windows XP [Version 5.1.2600] (C) Copyright 1986-2001 Microsoft Corp. C:\WINDOWS>netsh diag show modem ?
Usage: show modem
Parameters:
/v -- verbose mode, display all fields.
/p -- property mode, only display fields with values.
Modem Index Number.
Modem Name.
Part of the Modem Name.
Examples:
show modem
show modem 2
show modem modem*
show modem /v
show modem 2 /p
show modem modem* /p