There is special privacy legislation that permits emergency operators to obtain the caller's information. This information is gathered by mapping the calling phone number to an address and ESN in a database. This database function is known as ALI, Automatic Line Identification. The database is generally maintained by the Incumbent Local Exchange Carrier (ILEC) under contract by the PSAP. Each ILEC has their own standards for the formatting of the database. Most ALI databases have a companion database known as the MSAG, Master Street Address Guide. The MSAG describes the exact spelling of stre ...

See also:

Enhanced 911, Enhanced 911 - Public Safety Answering Point PSAP, Enhanced 911 - Wireline Enhanced 911, Enhanced 911 - Wireless Enhanced 911, Enhanced 911 - VoIP Enhanced 911

Read more here: » Enhanced 911: Encyclopedia II - Enhanced 911 - Wireline Enhanced 911

9-1-1 (nine-one-one) is the emergency telephone number for the North American Numbering Plan (NANP). It is one of eight N11 codes. 9-1-1 - Development of 9-1-1. The push for the development of a nationwide emergency telephone number came in 1957 when the National Association of Fire Chiefs recommended a single number to be used for reporting fires. In 1967 the President's Commission on Law Enforcement and Administration of Justice recommended the creation of a single number that can be used nationwid ...

Including:

• 9-1-1 - Development of 9-1-1
• 9-1-1 - Funding of 9-1-1
• 9-1-1 - Locating callers automatically
• 9-1-1 - Problems
• 9-1-1 - Emergency numbers outside the U.S. & Canada
• 9-1-1 - 9-1-1 Emergency Telephone Number Day
• 9-1-1 - September 11

Read more here: » 9-1-1: Encyclopedia - 9-1-1

Voice over Internet Protocol (also called VoIP, IP Telephony, Internet telephony, and Digital Phone) is the routing of voice conversations over the Internet or any other IP-based network. The voice data flows over a general-purpose packet-switched network, instead of traditional dedicated, circuit-switched voice transmission lines. Protocols used to carry voice signals over the IP network are commonly referred to as Voice over IP or VoIP protocols. They may be viewed as commercial realizations of the experimental Net ...

Including:

• 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 - Voice over IP

Main article: Enhanced 911 In over 93% of locations in the United States and Canada, dialing "911" from any telephone will link the caller to an emergency dispatch center—called a PSAP, or Public Safety Answering Point, by the telecom industry—which can send emergency responders to the caller's location in an emergency. In some areas enhanced 911 is available, which automatically gives dispatch the caller's location, if available. Dialing 9-1-1 from a mobile phone(Celluar/PCS) in the United States originally reached ...

See also:

9-1-1, 9-1-1 - Development of 9-1-1, 9-1-1 - Funding of 9-1-1, 9-1-1 - Locating callers automatically, 9-1-1 - Problems, 9-1-1 - Emergency numbers outside the U.S. & Canada, 9-1-1 - 9-1-1 Emergency Telephone Number Day, 9-1-1 - September 11

Read more here: » 9-1-1: Encyclopedia II - 9-1-1 - Locating callers automatically

In over 93% of locations in the United States and Canada, dialing "911" from any telephone will link the caller to an emergency dispatch center—called a PSAP, or Public Safety Answering Point, by the telecom industry—which can send emergency responders to the caller's location in an emergency. In some areas enhanced 911 is available, which automatically gives dispatch the caller's location, if available. Dialing 9-1-1 from a mobile phone (Celluar/PCS) in the United States originally reached the state police or highway patrol, inst ...

See also:

9-1-1, 9-1-1 - Development of 9-1-1, 9-1-1 - Funding of 9-1-1, 9-1-1 - Locating callers automatically, 9-1-1 - Problems, 9-1-1 - Emergency numbers outside the U.S. & Canada, 9-1-1 - 9-1-1 Emergency Telephone Number Day, 9-1-1 - Nine-eleven

Read more here: » 9-1-1: Encyclopedia II - 9-1-1 - Locating callers automatically

VoIP technology still has a few shortcomings that have led some to believe that it is not ready for widespread deployment. However, many industry analysts predicted that 2005 was the "Year of Inflection," where more IP PBX ports shipped than legacy digital PBX ports. Voice over IP - Implementation challenges. Because IP does not provide any mechanism to ensure that data packets are delivered in sequential order, or provide any Quality of Service guarantees, VoIP implementations may face problems dealing wi ...

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 - Drawbacks

VoIP technology still has a few shortcomings that have led some to believe that it is not ready for widespread deployment. However, many industry analysts predicted that 2005 was the "Year of Inflection," where more IP PBX ports shipped than legacy digital PBX ports. Voice over IP - Implementation challenges. Because IP does not provide any mechanism to ensure that data packets are delivered in sequential order, or provide any Quality of Service guarantees, VoIP implementations may face problems dealing wi ...

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 - Security, 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 - Drawbacks

There is no world-wide emergency number. Emergency telephone number - Africa. Chad: Fire: 18, Police: 17 Djibouti: Fire: 18, Police: 17 Ghana: Emergency: 999, Police: 191, Fire: 192, Ambulance: 193 Morocco: Fire: 15, Police (city): 19, Royal military police (country): 177 South Africa: Police or Fire: 10111, Ambulance: 10177, From mobile phones: 112 (soon also from fixed line phones) Tunisia: Emergency me ...

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 by region

There are some problems with the assignment of the number 9-1-1. In particular, it can cause some dialing-pattern problems in hotels and businesses. Some hotels, for example, have been known to require dialling "91+" to make an outside call. This leads to calls that look like 91+1+301+555+2368. Since that's a valid number, which starts with 911, and is not a call to an emergency service, a timeout becomes necessary on actual calls to 911. Such prefixes are strongly discouraged by telephone companies. This is also part of the re ...

See also:

9-1-1, 9-1-1 - Development of 9-1-1, 9-1-1 - Funding of 9-1-1, 9-1-1 - Locating callers automatically, 9-1-1 - Problems, 9-1-1 - Emergency numbers outside the U.S. & Canada, 9-1-1 - 9-1-1 Emergency Telephone Number Day, 9-1-1 - Nine-eleven

Read more here: » 9-1-1: Encyclopedia II - 9-1-1 - Problems

9-1-1 Emergency Telephone Number Day was proclaimed, by President Reagan in 1987, to occur on the 11th day of September, the ninth month, of that year. The proclamation was made to promote the North American universal emergency telephone number 9-1-1. Until 2001, September 11 was celebrated by many United States communities as "9-1-1 emergency number day" or simply "911 day". The promotional effort was often led by firefighters and the police. After the September 11, 2001 attacks, the reminders of 9-1-1 were ...

See also:

9-1-1, 9-1-1 - Development of 9-1-1, 9-1-1 - Funding of 9-1-1, 9-1-1 - Locating callers automatically, 9-1-1 - Problems, 9-1-1 - Emergency numbers outside the U.S. & Canada, 9-1-1 - 9-1-1 Emergency Telephone Number Day, 9-1-1 - Nine-eleven

Read more here: » 9-1-1: Encyclopedia II - 9-1-1 - 9-1-1 Emergency Telephone Number Day

Voice over IP - Cost. In general, phone service via VoIP costs less than equivalent service from traditional sources but similar to alternative PSTN service providers. 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 servic ...

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 - Security, 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

When the 9-1-1 system was originally introduced, it was advertised as the "nine-eleven" service. This was changed when some panicked individuals tried to find the "eleven" key on their telephones (this may seem bizarre and amusing, but it is important to remember that in emergencies people can easily become extremely confused and irrational). Therefore, all references to the telephone number 9-1-1 are now always made as nin ...

See also:

9-1-1, 9-1-1 - Development of 9-1-1, 9-1-1 - Funding of 9-1-1, 9-1-1 - Locating callers automatically, 9-1-1 - Problems, 9-1-1 - Emergency numbers outside the U.S. & Canada, 9-1-1 - 9-1-1 Emergency Telephone Number Day, 9-1-1 - Nine-eleven

Read more here: » 9-1-1: Encyclopedia II - 9-1-1 - Nine-eleven

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 FCC recen ...

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 - Security, 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

There is a lot of debate about the two most popular types of VoIP; SIP and H.323, each of them has its own merits. Initially H.323 was the most popular protocol, though its popularity has decreased in the "local loop" due to its poor traversal of NAT and firewalls. For this reason as domestic VoIP services have been developed, SIP has been far more widely adopted. However in backbone voice networks where everything is under the control of the network operator or telco, H.323 is the protocol of choice. Many of the largest carriers use H323 in ...

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 - Security, 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

The push for the development of a nationwide emergency telephone number came in 1957 when the National Association of Fire Chiefs recommended a single number to be used for reporting fires. In 1967 the President's Commission on Law Enforcement and Administration of Justice recommended the creation of a single number that can be used nationwide for reporting emergencies. The burden then fell on the Federal Communications Commission, which then met with AT&T in Nove ...

See also:

9-1-1, 9-1-1 - Development of 9-1-1, 9-1-1 - Funding of 9-1-1, 9-1-1 - Locating callers automatically, 9-1-1 - Problems, 9-1-1 - Emergency numbers outside the U.S. & Canada, 9-1-1 - 9-1-1 Emergency Telephone Number Day, 9-1-1 - September 11

Read more here: » 9-1-1: Encyclopedia II - 9-1-1 - Development of 9-1-1

There is a lot of debate about the two most popular types of VOIP; SIP and H323, each of them has its own merits. Initially H323 was the most popular format, its popularity has decreased, in the "local loop" by its poor traversal of NAT and firewalls. For this reason as domestic VoIP services have been developed, SIP has been far more widely adopted. However in backbone voice networks where everything is under the control of the network operator or telco, H323 is the protocol of choice. Many of the largest carriers use H323 in their core bac ...

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

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 FCC recen ...

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

There is a lot of debate about the two most popular types of VOIP; SIP and H323, each of them has its own merits. Initially H323 was the most popular format, its popularity has decreased, in the "local loop" by its poor traversal of NAT and firewalls. For this reason as domestic VoIP services have been developed, SIP has been far more widely adopted. However in backbone voice networks where everything is under the control of the network operator or telco, H323 is the protocol of choice. Many of the largest carriers use H323 in their core bac ...

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 - Security, 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

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 - Security, 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

9-1-1 and enhanced 9-1-1 are typically funded pursuant to state laws that impose monthly fees on local and wireless telephone customers. Depending on the state, counties and cities may also levy a fee, which may be in addition to, or in lieu of, the state fee. The fees are collected by local exchange and wireless carriers through monthly surcharges on customer telephone bills. The collected fees are remitted to 911 administrative bodies, which may be a statewide 911 board, the state public utility commission, a state revenue department, or l ...

See also:

9-1-1, 9-1-1 - Development of 9-1-1, 9-1-1 - Funding of 9-1-1, 9-1-1 - Locating callers automatically, 9-1-1 - Problems, 9-1-1 - Emergency numbers outside the U.S. & Canada, 9-1-1 - 9-1-1 Emergency Telephone Number Day, 9-1-1 - Nine-eleven

Read more here: » 9-1-1: Encyclopedia II - 9-1-1 - Funding of 9-1-1