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Enhanced 911 | A Wisdom Archive on Enhanced 911 | | Enhanced 911 A selection of articles related to Enhanced 911 | |
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Enhanced 911
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| ARTICLES RELATED TO Enhanced 911 | | | |  Enhanced 911: Encyclopedia II - Emergency telephone number - History of emergency services numbersThe first emergency number system to be deployed was in London, United Kingdom on June 30, 1937. When 999 was dialed, a buzzer sounded and a red light flashed in the exchange to attract an operator's attention. It was gradually extended to cover the entire country, but it was not until the late 1960s that the facility was available from every telephone.
In the days of loop disconnect dialing, attention was devoted to making the numbers difficult to dial accidentally by making them involve long sequences of pulses, such as with ...
See also:Emergency telephone number, Emergency telephone number - Use of emergency numbers, Emergency telephone number - Configuration and operation, Emergency telephone number - Emergency numbers by region, Emergency telephone number - Africa, Emergency telephone number - Australasia, Emergency telephone number - Asia, Emergency telephone number - Europe, Emergency telephone number - North America, Emergency telephone number - South America, Emergency telephone number - Middle East, Emergency telephone number - History of emergency services numbers, Emergency telephone number - Emergency numbers and mobile/wireless/cellular telephones, Emergency telephone number - Notes Read more here: » Emergency telephone number: Encyclopedia II - Emergency telephone number - History of emergency services numbers |
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| | | | | Enhanced 911: Encyclopedia II - Emergency telephone number - Configuration and operation The emergency telephone number is a special case in the country's telephone number plan. In the past, calls to the emergency telephone number were often routed over special dedicated circuits. Though with the advent of electronic exchanges these calls are now often mixed with ordinary telephone traffic, they still may be able to access circuits that other traffic cannot. Often the system is set up so that once a call is made to an emergency telephone number, it must be answered. Should the caller abandon the call, the line ma ...
See also:Emergency telephone number, Emergency telephone number - Use of emergency numbers, Emergency telephone number - Configuration and operation, Emergency telephone number - Emergency numbers by region, Emergency telephone number - Africa, Emergency telephone number - Australasia, Emergency telephone number - Asia, Emergency telephone number - Europe, Emergency telephone number - North America, Emergency telephone number - South America, Emergency telephone number - Middle East, Emergency telephone number - History of emergency services numbers, Emergency telephone number - Emergency numbers and mobile/wireless/cellular telephones, Emergency telephone number - Notes Read more here: » Emergency telephone number: Encyclopedia II - Emergency telephone number - Configuration and operation |
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| | | | | Enhanced 911: Encyclopedia II - Emergency telephone number - Use of emergency numbers The number is intended to be used only in an emergency.
For routine and non-urgent enquiries emergency services generally provide traditional telephone numbers for contact. These are normally listed in the local telephone directory. In the United Kingdom, for example, the number 0845 46 47 can also be dialled for NHS Direct, a non-emergency medical service. Routine and non-urgent calls as well as hoax or prank calls to emergency services numbers waste the time of both dispatchers and emergency responders and can endan ...
See also:Emergency telephone number, Emergency telephone number - Use of emergency numbers, Emergency telephone number - Configuration and operation, Emergency telephone number - Emergency numbers by region, Emergency telephone number - Africa, Emergency telephone number - Australasia, Emergency telephone number - Asia, Emergency telephone number - Europe, Emergency telephone number - North America, Emergency telephone number - South America, Emergency telephone number - Middle East, Emergency telephone number - History of emergency services numbers, Emergency telephone number - Emergency numbers and mobile/wireless/cellular telephones, Emergency telephone number - Notes Read more here: » Emergency telephone number: Encyclopedia II - Emergency telephone number - Use of emergency numbers |
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| | | | | Enhanced 911: Encyclopedia II - Voice over IP - Advantages
Voice over IP - Cost.
In general, phone service via VoIP costs less than equivalent service from traditional sources. Some cost savings are due to using a single network to carry voice and data, especially where users have existing under-utilized network capacity they can use for VoIP at no additional cost. One must note that the maximum upstream in your Internet connection is the final throttle and service is not as good as standard telco services. VoIP phone calls (even international) are widely regarded as fre ...
See also:Voice over IP, Voice over IP - Advantages, Voice over IP - Cost, Voice over IP - Functionality, Voice over IP - Drawbacks, Voice over IP - Implementation challenges, Voice over IP - Reliability, Voice over IP - Emergency calls, Voice over IP - Integration into global telephone number system, Voice over IP - Single point of calling, Voice over IP - Mobile phones, Voice over IP - Adoption, Voice over IP - Mass-market telephony, Voice over IP - Corporate and telco use, Voice over IP - Use in Amateur Radio, Voice over IP - Legal, Voice over IP - Technical details, Voice over IP - Protocols, Voice over IP - Networks: Full Phone Service, Voice over IP - Networks: Software Service, Voice over IP - Hardware: Wi-Fi Phone, Voice over IP - Software, Voice over IP - VoIP Testing, Voice over IP - Related concepts Read more here: » Voice over IP: Encyclopedia II - Voice over IP - Advantages |
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| | | | | Enhanced 911: Encyclopedia II - Emergency telephone number - Emergency numbers and mobile/wireless/cellular telephones The GSM mobile phone standard includes 112 as an emergency number, no matter what other local emergency number are applicable. This is valuable for foreign travelers, who may not know a local one.
Using 112 instead of another emergency number on a GSM phone may be advantageous, since 112 is recognized by all GSM phones as an emergency number. A phone dialing a different emergency services number may refuse to roam onto another network, leading to trouble if there is no access to the home network. Dialing 112 forces the phone to ...
See also:Emergency telephone number, Emergency telephone number - Use of emergency numbers, Emergency telephone number - Configuration and operation, Emergency telephone number - Emergency numbers by region, Emergency telephone number - Africa, Emergency telephone number - Australasia, Emergency telephone number - Asia, Emergency telephone number - Europe, Emergency telephone number - North America, Emergency telephone number - South America, Emergency telephone number - Middle East, Emergency telephone number - History of emergency services numbers, Emergency telephone number - Emergency numbers and mobile/wireless/cellular telephones, Emergency telephone number - Notes Read more here: » Emergency telephone number: Encyclopedia II - Emergency telephone number - Emergency numbers and mobile/wireless/cellular telephones |
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| | | | | | Enhanced 911: Encyclopedia II - Voice over IP - Adoption
Voice over IP - Mass-market telephony.
A major development starting in 2004 has been the introduction of mass-market VoIP services over broadband Internet access services, in which subscribers make and receive calls as they would over the PSTN. This requires an analog telephone adapter (ATA) to connect a telephone to the broadband Internet connection. Full phone service VoIP phone companies provide inbound and outbound calling with Direct Inbound Dialing. Many offer unlimited calling to the U.S., and sometimes to ...
See also:Voice over IP, Voice over IP - Advantages, Voice over IP - Cost, Voice over IP - Functionality, Voice over IP - Drawbacks, Voice over IP - Implementation challenges, Voice over IP - Reliability, Voice over IP - Emergency calls, Voice over IP - Integration into global telephone number system, Voice over IP - Single point of calling, Voice over IP - Mobile phones, Voice over IP - Adoption, Voice over IP - Mass-market telephony, Voice over IP - Corporate and telco use, Voice over IP - Use in Amateur Radio, Voice over IP - Legal, Voice over IP - Technical details, Voice over IP - Protocols, Voice over IP - Networks: Full Phone Service, Voice over IP - Networks: Software Service, Voice over IP - Hardware: Wi-Fi Phone, Voice over IP - Software, Voice over IP - VoIP Testing, Voice over IP - Related concepts Read more here: » Voice over IP: Encyclopedia II - Voice over IP - Adoption |
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| | | | | Enhanced 911: Encyclopedia II - Voice over IP - Technical details
Voice over IP - Protocols.
Most standards-based solutions use either the H.323 or Session Initiation Protocol (SIP) protocols. A number of proprietary designs also exist.
Signaling protocols:
Session Initiation Protocol (SIP)
defined by the IETF, newer than H.323
H.323
defined by the ITU-T
Megaco (a.k.a. H.248) and MGCP
both media gateway control protocols
Skinny Client Control Protocol
proprie ...
See also:Voice over IP, Voice over IP - Advantages, Voice over IP - Cost, Voice over IP - Functionality, Voice over IP - Drawbacks, Voice over IP - Implementation challenges, Voice over IP - Reliability, Voice over IP - Emergency calls, Voice over IP - Integration into global telephone number system, Voice over IP - Single point of calling, Voice over IP - Mobile phones, Voice over IP - Adoption, Voice over IP - Mass-market telephony, Voice over IP - Corporate and telco use, Voice over IP - Use in Amateur Radio, Voice over IP - Legal, Voice over IP - Technical details, Voice over IP - Protocols, Voice over IP - Networks: Full Phone Service, Voice over IP - Networks: Software Service, Voice over IP - Hardware: Wi-Fi Phone, Voice over IP - Software, Voice over IP - VoIP Testing, Voice over IP - Related concepts Read more here: » Voice over IP: Encyclopedia II - Voice over IP - Technical details |
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| | | | | Enhanced 911: Encyclopedia II - Voice over IP - Legal Please remove this notice after the article has been expanded. Details are on this talk page or at Wikipedia:Requests for expansion.
As the popularity of VoIP grows, and PSTN users switch to VoIP in increasing numbers, governments are becoming more interested in regulating VoIP in a manner similar to PSTN services.
In the US, the Federal Communications Commission now requires all VoIP operators who don't support Enhanced 911 to attach a sticker warning that traditional 911 services aren't available. The FC ...
See also:Voice over IP, Voice over IP - Advantages, Voice over IP - Cost, Voice over IP - Functionality, Voice over IP - Drawbacks, Voice over IP - Implementation challenges, Voice over IP - Reliability, Voice over IP - Emergency calls, Voice over IP - Integration into global telephone number system, Voice over IP - Single point of calling, Voice over IP - Mobile phones, Voice over IP - Adoption, Voice over IP - Mass-market telephony, Voice over IP - Corporate and telco use, Voice over IP - Use in Amateur Radio, Voice over IP - Legal, Voice over IP - Technical details, Voice over IP - Protocols, Voice over IP - Networks: Full Phone Service, Voice over IP - Networks: Software Service, Voice over IP - Hardware: Wi-Fi Phone, Voice over IP - Software, Voice over IP - VoIP Testing, Voice over IP - Related concepts Read more here: » Voice over IP: Encyclopedia II - Voice over IP - Legal |
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