initialization String For Modems Problem

Hello
I have purchased a new modem (accton)to use with program i have to get the Caller ID
(I mean the Caller Phone Number) so i try to use all of the Initialization String like :
AT#CID=1
AT+VCID=1
At+FCLASS=8;+VCID=1
AT#CLS=8#CID=1
AT#CC1AT%CCID=1
AT%CCID=3
ATS40.2=1,ATS42.2=1
but all the Initialization String I know are not working , and when I purchased this internal modem card the saller told me this modem supported for Caller ID ,so Please tell me about the Initialization String I can use with my new modem to Enable the caller ID .
the details of my modem :
modem’s name : Cheetahmodem ACM120
the Driver is : Accton ACM 120-02
model no. ACM 120-02
thanks for your help