I've been there. The only things that I can set are as follows:
General Tab:
->Data Connection Preferences
-->Port Speed (115200)
-->Data Protocol (Standard EC)
-->Compression (Enabled)
-->Flow Control (Hardware)
Advanced Tab:
->Hardware Settings
-->Data Bits (8)
-->Parity (None)
-->Stop Bits (1)
Things in the brackets are the values that they are currently set to. Any idea what I need to change. There is no place for me to add in any init strings for AT commands here.
Thanks!