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:
“It is not true that there is dignity in all work. Some jobs are definitely better than others.... People who have good jobs are happy, rich, and well dressed. People who have bad jobs are unhappy, poor and use meat extenders. Those who seek dignity in the type of work that compels them to help hamburgers are certain to be disappointed.”
—Fran Lebowitz (b. 1950)
“Well, Mary, only six more days to go and your old Nathan will be out of the army. Haven’t decided what I’ll do yet. Somehow I just can’t picture myself back there on the banks of the Wabash rocking on a front porch. No, I’ve been thinkin I, maybe I’ll push on west, new settlements, California.”
—Frank S. Nugent (1908–1965)
“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)