Nor sure if this is the right subforum for this question. I think it will reach the right people.
Ive successfully used AT commands in Hyperterminal to establish a data connection on a Huawei modem. Why? Just experimenting.
at
OK
at+cops?
+COPS: 0,2,"65510",2
OK
at+csq
+CSQ: 4,99
OK...