Telephone Handset Microphone : 9 Steps - Instructables

Touch Tone MIDI Phone : 9 Steps (with Pictures) - Instructables

Adapting a Telephone Handset to a Cell Phone : 7 Steps (with Pictures) - Instructables

Camera Mount ORTF Stereo Microphone : 6 Steps (with Pictures) - Instructables

Connecting Old phone speaker and mic to circuit board

Build a Battery-Powered Amp for an Old Carbon Mic : 5 Steps (with Pictures) - Instructables

Easily Modify a Classic (retro) Telephone Handset for Use With a Cell Phone; Bluetooth Optional. (NO TECHNICAL KNOWLEDGE NEEDED) : 4 Steps (with Pictures) - Instructables

How to Make a Telephone Microphone! LearnAudioEngineering.com

Balanced Microphone From an Old Telephone : 4 Steps (with Pictures) - Instructables

Telephone Microphone: How to Build A Telephone Microphone, Tape Op Magazine

Telephone : 6 Steps - Instructables

Balanced Microphone From Telephone Headset Speaker : 4 Steps (with Pictures) - Instructables

Balanced Microphone From an Old Telephone : 4 Steps (with Pictures) - Instructables