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2. Walter L. Shaw - Wikipedia

   en.wikipedia.org/wiki/Walter_L._Shaw

   Walter L. Shaw Sr. (December 20, 1916, in Vineland, New Jersey [1] – July 21, 1996 [2]) was an American telecommunications engineer and inventor who clashed with his employer (variously identified as AT&T, [3] Bell [1] [4] and Southern Bell [2]) over ownership of his inventions.

3. AT&T Merlin - Wikipedia

   en.wikipedia.org/wiki/AT&T_Merlin

   AT&T described the signaling channel on the data pair as “analog multi-line telephone protocol (40 kbps)” but no further details were made available about the protocol. [ 4 ] Attached here is the pin-out diagram of the new "skinny cable", only requiring 4-pair Category 3 cable, to each telephone set while providing the same multiline ...

4. Speakerphone - Wikipedia

   en.wikipedia.org/wiki/Speakerphone

   A speakerphone is a telephone with a microphone and loudspeaker provided separately from those in the handset. [1] This device allows multiple persons to participate in a conversation. The loudspeaker broadcasts the voice or voices of those on the other end of the telephone line, while the microphone captures all voices of those using the ...

5. Phone etiquette 101: When it’s rude to be on speaker — and ...

   www.aol.com/news/phone-etiquette-101-rude...

   Don’t use speakerphone. Do not use speakerphone for calls you make in public — use headphones. This is especially true for video calls or when watching to something on your device.

6. Design Line telephone - Wikipedia

   en.wikipedia.org/wiki/Design_Line_telephone

   In 1985, AT&T Technologies redesigned its consumer telephone products to be cheaper to build and be more competitive in the marketplace by adding electronic ringers and a redial function. In 1986, they moved telephone production out of the United States. After this time several new Design Line series telephones were marketed and discontinued.

7. AT&T Communications (1984–2010) - Wikipedia

   en.wikipedia.org/wiki/AT&T_Communications_(1984...

   In 2010, AT&T Communications (and subsidiary AT&T Communications of New England) was merged into AT&T Corp. [5] In 2012, 17 more of the AT&T Communications companies were dissolved into AT&T Corp., leaving only the companies in Indiana, New York, Virginia, and Washington, D.C. as the last remnants of the 1984-created structure. On July 28, 2017 ...