Search results
Results from the WOW.Com Content Network
In 2022, 82.9% of German households had at least one landline phone [18] while 73 percent of U.S. households had only a cell phone, 25 percent had a landline and cell service, and 1 percent had only a landline. [19] As of 2023, Estonia and the Netherlands have retired the legacy parts of the public switched telephone network (PSTN). In the ...
Electrical engineer Martin Cooper of Motorola made the first publicized handheld mobile phone call on a prototype DynaTAC model on April 3, 1973. This is a reenactment in 2007. The DynaTAC is a series of cellular telephones manufactured by Motorola from 1983 to 1994. The Motorola DynaTAC 8000X received approval from the U.S. FCC on September 21 ...
The StarTAC is a series of mobile phones released by Motorola starting in 1996. It is the successor of the MicroTAC, a semi-clamshell design first launched in 1989. [2] Whereas the MicroTAC's flip folded down from below the keypad, the StarTAC folded up from above the display.
STU-III (Secure Telephone Unit - third generation) is a family of secure telephones introduced in 1987 by the NSA for use by the United States government, its contractors, and its allies. STU-III desk units look much like typical office telephones, plug into a standard telephone wall jack and can make calls to any ordinary phone user (with such ...
For example, telephone cables in the UK typically have a BS 6312 (UK standard) plug at the wall end and a 6P4C or 6P2C modular connector at the telephone end: this latter may be wired as per the RJ11 standard (with pins 3 and 4), or it may be wired with pins 2 and 5, as a straight-through cable from the BT plug (which uses pins 2 and 5 for the ...
Canopy – A line-of-sight wireless technology, primarily used by ISPs to provide broadband internet; MotoMESH – A mobile wireless broadband product providing proprietary "Mesh-Enabled Architecture" and standards-based 802.11 network access in both the unlicensed 2.4 GHz band and the licensed 4.9 GHz public-safety band
If the telephone works at the test jack, the problem is the customer's wiring, and the customer is responsible for repair. If the telephone does not work, the line is faulty and the telephone company is responsible for repair. Most NIDs also include "circuit protectors", which are surge protectors for a telephone line.
Two decades of evolution of mobile phones, from a 1992 Motorola DynaTAC 8000X to the 2014 iPhone 6 Plus (from Mobile phone) Image 24 E-waste in Agbogbloshie (from Smartphone ) Image 25 Alexander Graham Bell was awarded the first U.S. patent for the invention of the telephone in 1876.