Thank you for asking this question in the support community. You are correct there are three separate access points in the configuration because you have three separate NV150s. The configuration appears to be accurate, based on your description, and the wireless wizard is helpful for setting up access points. The AOS Wireless Configuration Guide is a helpful reference for wireless configurations in ADTRAN units.
Please, feel free to reply to this post with any additional questions or information. I will be happy to help in any way I can.
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