Time machine from Behind the Scenes of Charlie Chaplins film

This short clip is from the DVD which includes behind the scenes in Charlie Chaplin's film 'The Circus'. Attending the premiere at Manns Chinese Theatre in Hollywood, CA - the scene shows a large woman (or man), dressed in black and a hat, talking into something that only be described as a mobile phone device or possibly a walkie-talkie. Remember this is from 1928.