FYI here are the diagnostics from the log from the Vista modem configuration tool:
12-08-2008 21:57:48.830 - Modem type: PCI SoftV92 Modem
12-08-2008 21:57:48.830 - Modem inf path: oem25.inf
12-08-2008 21:57:48.830 - Modem inf section: Modem3
12-08-2008 21:57:48.830 - Matching hardware ID: pci\ven_14f1&dev_2f30&subsys_205114f1
12-08-2008 21:57:49.107 - 115200,8,N,1, ctsfl=1, rtsctl=2
12-08-2008 21:57:49.107 - Initializing modem.
12-08-2008 21:57:49.124 - DSR is low while initializing the modem. Verify modem is turned on.
12-08-2008 21:57:49.141 - Send: AT<cr>
12-08-2008 21:57:49.143 - Recv: AT<cr>
12-08-2008 21:57:49.143 - Command Echo
12-08-2008 21:57:49.143 - Recv: <cr><lf>OK<cr><lf>
12-08-2008 21:57:49.143 - Interpreted response: OK
12-08-2008 21:57:49.154 - Send: AT&FE0V1S0=0&C1&D2+MR=2;+DR=1;+ER=1;W2<cr>
12-08-2008 21:57:49.310 - Recv: AT&FE0V1S0=0&C1&D2+MR=2;+DR=1;+ER=1;W2<cr>
12-08-2008 21:57:49.311 - Command Echo
12-08-2008 21:57:49.311 - Recv: <cr><lf>OK<cr><lf>
12-08-2008 21:57:49.311 - Interpreted response: OK
12-08-2008 21:57:49.322 - Send: ATS7=60S30=0M1+ES=3,0,2;+DS=3;+DS44=3;+IFC=2,2;X4<cr>
12-08-2008 21:57:49.323 - Recv: <cr><lf>OK<cr><lf>
12-08-2008 21:57:49.323 - Interpreted response: OK
12-08-2008 21:57:49.343 - Passthrough On
12-08-2008 21:57:50.091 - Passthrough Off
12-08-2008 21:57:50.091 - Session Statistics:
12-08-2008 21:57:50.091 - Reads : 833 bytes
12-08-2008 21:57:50.091 - Writes: 138 bytes
ATQ0V1E0 - OK
AT+GMM - +GMM: PCI SoftV92 Modem
AT+FCLASS=? - 0,1,8,80
AT#CLS=? - COMMAND NOT SUPPORTED
AT+GCI? - +GCI: B5
AT+GCI=? - +GCI: (00,01,02,03,04,05,06,07,09,0A,0B,0C,0D,0E,0F,10,11,12,13,14,15,16,19,1A,1B,1C,1D,1E,1F,20,21,22,23,24,25,26,27,28,29,2A,2B,2C,2D,2E,2F,30,31,32,33,34,35,36,37,38,39,3A,3B,3C,3D,3E,40,41,43,44,
45,46,47,48,49,4B,4C,4D,4E,4F,50,51,52,53,54,55,56,57,58,59,5A,5B,5C,5E,5F,60,61,62,63,64,65,66,67,68,69,
6A,6B,6C,6D,6E,6F,70,71,72,73,74,75,76,77,78,79,7A,7B,7C,7D,7E,7F,80,81,82,83,84,85,86,87,88,89,8A,8B,8C,
8D,8E,8F,90,92,93,94,96,97,98,99,9A,9B,9C,9D,9E,9F,A0,A1,A2,A3,A4,A5,A6,A7,A8,A9,AA,AB,AC,AD,AE,AF,B0,B1,
B2,B3,B4,B5,B6,B7,B8,B9,BA,BB,BC,BD,BE,BF,C1,C2,C3,C4,C5,C7,C8,C9,CA,CB,CC,CD,CE,CF,D0,D1,D2,D3,D4,D5,
D6,D7,D8,D9,DA,DB,DC,DD,DE,DF,E0,E1,E2,E3,E4,E5,E6,E7,E8,EB,EC,ED,EE,EF,F0,F1,F2,F3,F4,F5,F7,F8,F9,FA,FB,
FC,FE)
ATI1 - 255
ATI2 - OK
ATI3 - SoftK56V_B2.1_V7.60.00.50
ATI4 - PCI SoftV92 Modem
ATI5 - 181
ATI6 - SoftK56
CModem Version 12
Rksample Version 342
ATI7 - 255