Are you thinking of this URL? https://help.webex.com/en-us/article/WBX000028782/Network-Requirements-for-Webex-Services 

 @morpheus I am not sure if this is what you are asking for, but you can take the audio from the Webex meeting by calling in as a SIP client, to the sips:{meetingNumber}@webex.com or sips:{meetingNumber}@{sitename}.webex.com SIP address.

You can use the SetUser XML API message (meetingTypes >> meetingType), allowing the normal PRO session type and disabling the custom (restricted) session type and vice versa.

Is this a classic Webex Meeting Center site or a Teams integrated site? If it is Teams integrated, i.e. you can manage it from the Control Hub as opposed to the Site Admin pages, please drop me a personal message, I may know a possible workaround for...

There is a good Python tool for that, published at https://github.com/DJF3/Webex-Message-space-archiver