Abstract: A clip for a test telephone has a hook part and a gate part which pivots to open and close the mouth of the hook part. In the open position it enters a slot in the hook part. The hook part has an offset coupling portion for pivotable connection to the gate part and to the telephone casing. The casing has a channel in which the clip is mounted so as to be pivotable to a use configuration in which the mouth of the hook part is aligned with the adjacent surface of the casing so an object to be hooked can slide relative to the casing and into the clip.

Abstract: A telephone includes an EEPROM memory (26) for storing data, and a microcontroller (14) for controlling operations. The EEPROM (26) contains data for different operating protocols, so that the telephone can be readily adapted for use in different telephone systems. The EEPROM (26) draws a (small) line current when the telephone is in use, but requires no current to maintain its memories, so no standby power is required. Particularly if the telephone is for use in noisy environments, there can a mute/boost feature (30) whereby the receiver gain is boosted and the microphone is simultaneously cut off. This may be effectuated by use of the EEPROM (26).