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2. Marian Croak - Wikipedia

   en.wikipedia.org/wiki/Marian_Croak

   Bell Labs wanted to send voice, text, and video data digitally rather than using a standard phone line. And the favored mechanism for this was Asynchronous Transfer Mode (ATM) protocol, but Croak, along with the rest of her team, convinced AT&T to use TCP/IP instead. [6] TCP/IP allowed for a standardized way of packaging and communicating ...

3. Voice over IP - Wikipedia

   en.wikipedia.org/wiki/Voice_over_IP

   Among these are Voice over LTE and Voice over 5G , which enable voice communication over IP-based mobile infrastructures. In contrast to traditional VoIP services, which often function independently of global telephone numbering systems, VoLTE and Vo5G are directly connected to mobile operators ' infrastructures, providing seamless connectivity ...

4. VoIP phone - Wikipedia

   en.wikipedia.org/wiki/VoIP_phone

   Flip VoIP phone. A VoIP phone or IP phone uses voice over IP technologies for placing and transmitting telephone calls over an IP network, such as the Internet. [1] This is in contrast to a standard phone which uses the traditional public switched telephone network (PSTN).

5. AT&T Communications - Wikipedia

   en.wikipedia.org/wiki/AT&T_Communications

   AT&T Phone (formerly AT&T U-verse Voice) is a voice communication service delivered over AT&T's IP network . This phone service is digital and provides a voicemail service accessed by *98 from the home number. Customers who subscribe to both AT&T Phone and U-verse TV get features such as call history on channel 9900, which displays the last 100 ...

6. ITXC Corporation - Wikipedia

   en.wikipedia.org/wiki/ITXC_Corporation

   ITXC Corporation (Internet Telephony Exchange Carrier) was a US-based wholesale provider of voice over IP internet-based phone calls. It was cofounded by Tom Evslin and his wife Mary in 1997 with seed money from AT&T and VocalTec (Nasdaq: VOCL). [1] In 2000, it had the largest internet telephony network in the world [citation needed]. The ...

7. AT&T Internet - Wikipedia

   en.wikipedia.org/wiki/AT&T_Internet

   AT&T delivers most internet service over a fiber-to-the-node (FTTN) or fiber-to-the-premises (FTTP) communications network. In the more common FTTN deployment, fiber-optic connections carry all data (internet, IPTV, and voice over IP) between the service provider and a distribution node.