When does Carlton Your Doorman return?

Carlton Your Doorman is a 1980 American television pilot for an animated spin-off of the live-action sitcom Rhoda. It originally aired as a "CBS Special Presentation" on May 21, 1980, and has never been rebroadcast. The episode relates to the adventures of Carlton, the previously off-screen character from Rhoda who was heard via the intercom but almost never seen. It was produced by MTM Enterprises and was the only animated production from MTM.