While logged into ipDTL, you'll see a dropdown selector at the top of the page, which is where you can choose from the various layouts (page configurations).

They are divided into categories, and some layouts are only available to Silver or Gold subscribers.  The number of remotes determines how many audio channels are available for concurrent calls with audio.

The ipDTL layouts are designed with audio production or live radio in mind, whereas the hybrIP layouts are designed for running a live talk show (phone-in show).

• ipDTL Audio:
  1 x Remote
  2 x Remote (Silver & Gold)
  4 x Remote (Gold only)
  6 x Remote (Gold only)
• ipDTL Video: (Gold only)
  1 x Remote + 1x Video
  2 x Remote + 1x Video
  4 x Remote + 1x Video
• hybrIP:
  Laptop (for running a talk show on a single computer).
  Studio (for running a talk show in a full studio environment).
  Screening (for the producer of a talk show to answer and screen calls
  
• Special:
  2 x Input (a legacy layout, unavailable to new customers)
  Matrix (allows complex routing between audio inputs and outputs)
  4 x I/O (for use with a multi-channel audio device. It has no mix-minus)
  hybrip 4 x I/O (as above, but with talk show production in mind)
  6 x Intercom (Designed for use with intercom systems. Push-to-talk, latch-to-talk and listen)
  Mobile (beta) - Automatically served to mobile browsers. Not supported.