How do I turn off Soft AP mode?

How do I turn off Soft AP mode on the S6B module? I’ve tried “ATCE0” but that generates “ERROR”. I want to disable the internal web server so I can receive HTTP requests over the serial connection to my MCU.

According to the XBee WiFi user manual http://www.digi.com/support/productdetail?pid=5585&type=documentation you need to have the ID parameter set to NULL and the DO parameter bit 1 set to 1. See page 106.