If I interrogate the modem (phone) using the windows Modem properties dialog box and go into Diagnostics,
I can get this result from the log:-
08-29-2013 08:26:28.342 - File: C:\WINDOWS\system32\tapisrv.dll, Version 6.2.9200
08-29-2013 08:26:28.342 - File: C:\WINDOWS\system32\unimdm.tsp, Version 6.2.9200
08-29-2013 08:26:28.342 - File: C:\WINDOWS\system32\unimdmat.dll, Version 6.2.9200
08-29-2013 08:26:28.342 - File: C:\WINDOWS\system32\uniplat.dll, Version 6.2.9200
08-29-2013 08:26:28.344 - File: C:\WINDOWS\system32\drivers\modem.sys, Version 6.2.9200
08-29-2013 08:26:28.344 - File: C:\WINDOWS\system32\modemui.dll, Version 6.2.9200
08-29-2013 08:26:28.345 - File: C:\WINDOWS\system32\mdminst.dll, Version 6.2.9200
08-29-2013 08:26:28.345 - Modem type: Samsung GPRS MODEM
08-29-2013 08:26:28.345 - Modem inf path: samsung gprs modem.inf
08-29-2013 08:26:28.345 - Modem inf section: Modem1
08-29-2013 08:26:28.345 - Matching hardware ID: samsunggprsmodem
08-29-2013 08:26:28.356 - 115200,8,N,1, ctsfl=1, rtsctl=2
08-29-2013 08:26:28.356 - Initializing modem.
08-29-2013 08:26:28.356 - DSR is low while initializing the modem. Verify modem is turned on.
08-29-2013 08:26:28.357 - CTS is low while initializing modem.
08-29-2013 08:26:28.367 - Send: AT<cr>
08-29-2013 08:26:30.368 - Timed out waiting for response from modem
08-29-2013 08:26:30.368 - The modem failed to respond to the initialization command, Retrying one more time
08-29-2013 08:26:30.368 - 115200,8,N,1, ctsfl=1, rtsctl=2
08-29-2013 08:26:30.368 - DSR is low while initializing the modem. Verify modem is turned on.
08-29-2013 08:26:30.368 - CTS is low while initializing modem.
08-29-2013 08:26:30.378 - Send: AT<cr>
08-29-2013 08:26:32.379 - Timed out waiting for response from modem
08-29-2013 08:26:32.379 - The modem failed to respond to the initialization command, Retrying one more time
08-29-2013 08:26:32.379 - 115200,8,N,1, ctsfl=1, rtsctl=2
08-29-2013 08:26:32.379 - DSR is low while initializing the modem. Verify modem is turned on.
08-29-2013 08:26:32.379 - CTS is low while initializing modem.
08-29-2013 08:26:32.389 - Send: AT<cr>
08-29-2013 08:26:34.389 - Timed out waiting for response from modem
08-29-2013 08:26:34.389 - Session Statistics:
08-29-2013 08:26:34.389 - Reads : 0 bytes
08-29-2013 08:26:34.389 - Writes: 0 bytes
ATQ0V1E0 - OK
AT+GMM - GT-S5511T
AT+FCLASS=? - COMMAND NOT SUPPORTED
AT#CLS=? - COMMAND NOT SUPPORTED
AT+GCI? - COMMAND NOT SUPPORTED
AT+GCI=? - COMMAND NOT SUPPORTED
ATI1 - Manufacturer: SAMSUNG ELECTRONICS CORPORATION
Model: GT-S5511T
Revision: S5511AJKD4
IMEI: 357469043196886
+GCAP: +CGSM,+DS,+ES
ATI2 - Manufacturer: SAMSUNG ELECTRONICS CORPORATION
Model: GT-S5511T
Revision: S5511AJKD4
IMEI: 357469043196886
+GCAP: +CGSM,+DS,+ES
ATI3 -
ATI4 -
ATI5 -
ATI6 -
ATI7 -
So - does that shed any light?
Peter