GPO Telephones - Type 782 Push Button

Type 782 Push Button

This was a 746 type telephone which could transmit MF4 signalling, also known as DTMF touch tones. These telephones could only operate to exchanges that could deal with MF4 but they were used on PABX systems that used MF4 for internal calls from the 1970s. The TXE1 exchange could handle MF4 calls as early as the late 1960s. This was however a unique prototype exchange, which served customers in Leighton Buzzard: otherwise customers did not have access to MF4 capable exchanges until later models of the TXE4 system came into service in the late 1980s.

Read more about this topic:  GPO Telephones

Famous quotes containing the words type, push and/or button:

    The ideal American type is perfectly expressed by the Protestant, individualist, anti-conformist, and this is the type that is in the process of disappearing. In reality there are few left.
    Orson Welles (1915–1984)

    Our enemies have beat us to the pit.
    It is more worthy to leap in ourselves
    Than tarry till they push us.
    William Shakespeare (1564–1616)

    What is the life of man! Is it not to shift from side to side?—from sorrow to sorrow?—to button up one cause of vexation!—and unbutton another!
    Laurence Sterne (1713–1768)