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ASTRO 25 is a generation of ASTRO digital two-way radio communications by Motorola Solutions. Motorola first introduced digital two-way radio in the U.S. in 1991 under the name ASTRO Digital Solutions. [1]
With the completion of the APCO Project 25 standard, Motorola introduced the ASTRO 25 solution and migrated its ASTRO Digital Solutions customers to ASTRO 25. Project 25 (also known as P25) is a suite of digital radio communications standards designed specifically for law enforcement, fire, and medical services to communicate with each other during emergencies. [2]
ASTRO 25 is now the most widely used P25 mission-critical voice and data communication network in the world. [3]
The Original ASTRO 25 format utilizes APCO Project 25 Phase I technology (FDMA). It is the most used format of the ASTRO 25 family of radio systems.
The ASTRO 25 Phase II system, which complies with the P25 Phase II standard, uses TDMA technology to deliver two voice channels over a single wireless trunking channel. [4] The P25 standards do not yet support TDMA conventional operation. The ASTRO 25 network also ensures encryption key assignment over the system's radio channels and enhanced network security tools. [5]
The ASTRO 25 digital radio system is claimed to provide superior audio quality and advanced features which complies with the Federal Communications Commission's 2013 narrowbanding requirements. [6] ASTRO 25 currently operates in the 700 MHz, 800 MHz, 900 MHz, UHF and VHF bands for voice and data operation. [5]
Motorola has been selling car radio receivers to police departments and municipalities since 1930. [7] The New Hampshire U.S. State Police were the first to test and use a conventional ASTRO Digital Solutions system. They began testing of ASTRO portable radios, mobile radios, base stations, dispatch consoles, and a wide-area system in December 1992 for State Police Troop A, and completed a phased installation several years later. [8] This original ASTRO system was later converted to ASTRO 25.
Today, ASTRO 25 is widely used for public safety communications. [9] ASTRO 25 enables federal, state, and local public safety agencies to achieve compatibility and communicate in emergencies and widespread disasters, such as Hurricane Katrina [10] and the Boston Marathon bombing. [11]
As of 2014, ASTRO 25 is used in over 60 countries and more than three dozen U.S. states. [12]
ASTRO 25 is a P25 standards-based mission critical network that provides integrated voice and data network communications for emergency response and coordinated communications during and after an incident. The ASTRO 25 network, two-way radios, and advanced applications work together. [13]
The ASTRO 25 network and radios have been used during bushfires in Victoria in 2009, Superstorm Sandy[14], [14] and wildfires in southeastern Texas in 2013. [15]
The ASTRO 25 core is the hub for the communications network. It comprises P25 portable and mobile radios, dispatch consoles, data applications, and RF conventional or trunked sites. [16] In addition to ASTRO 25, Motorola also builds several other P25 radio models, including the APX family of radios, designed for first responders. [17] With the ASTRO 25 core, organizations can deploy Motorola MCC 7500 and MCC 7500E IP Dispatch Consoles and have secure end-to-end encryption for all the radio traffic between operators and users in the field.
In 2008, Motorola announced the first deployment of Inter RF Subsystem Interface (ISSI) gateways between live Project 25 public safety networks. [18] The ISSI standard is a non-proprietary interface that allows two or more P25-compliant trunked systems to be connected—even if they are from different vendors or operating in different frequency bands. It extends the interoperability of radio systems without the need to fund super-large networks or install large, complex gateways. [19]
Motorola installed an ISSI prototype in Arizona, USA. [18] According to former Arizona Governor Janet Napolitano, "The Motorola ISSI gateway trial is an excellent example of driving innovation, which will enable our state with agency interoperability to protect our residents and visitors best." [18]
In 2010, Motorola tested the ISSI equipment with five other emergency communications equipment manufacturers to demonstrate the effectiveness of P25 ISSI interoperability. The tests conducted on the ASTRO 25 system with the ISSI gateway confirmed that it could connect P25 systems and implement digital connectivity for emergency communications. [20]
In 2011, Motorola deployed ASTRO 25 systems with P25 Time Division Multiple Access (TDMA) trunking to double the voice capacity of Frequency Division Multiple Access (FDMA) technology. [21]
The P25 Phase 2 products were the first in the industry. [22] By October 2013, over 30 customers had contracted for Motorola's P25 TDMA technology. [23] By January 2014, 74 customers had been shipped to 106 zones licensed for TDMA.
With the City of Apopka, Florida, Motorola Solutions implemented the first deployment and acceptance of a dual mode ASTRO 25 system with P25 TDMA trunking for Apopka police, fire and emergency management personnel, and public works agencies. [23] The system gives Apopka coverage and interoperability with surrounding agencies using 700 and 800 MHz frequencies without the need for adding frequency bands, antenna sites, or stations. [24]
ASTRO 25 solutions are designed for information assurance by preventing, detecting, and responding to external and internal risks. [25] On January 19, 1996, Motorola was the first U.S. company to be granted FIPS 140-1 validation for its ASTRO subscriber encryption module, having been granted certificate number 2. [26]
ASTRO 25 was the first to support federal grade security with FIPS 140-1 and CJIS compliant integrated data and comply with the U.S. Department of Defense (DOD) requirements for Criminal Justice Information System (CJIS); Department of Defense Information Assurance Certification and Accreditation (DiaCAP); Defense Information Systems Agency (DISA); Department of Defense Information Technology Security Certification and Accreditation Process (DitSCAP); Federal Information Processing Standards (FIPS); Federal Information Security Mandate Act (FiSMa); National Institute of Standards and Technology (NiSt) and NiSt-FIPS800 to identify security risks and vulnerabilities required by most Federal Agencies for themselves and their subcontractors. [25] [27]
Advanced Mobile Phone System (AMPS) was an analog mobile phone system standard originally developed by Bell Labs and later modified in a cooperative effort between Bell Labs and Motorola. It was officially introduced in the Americas on October 13, 1983, and was deployed in many other countries too, including Israel in 1986, Australia in 1987, Singapore in 1988, and Pakistan in 1990. It was the primary analog mobile phone system in North America through the 1980s and into the 2000s. As of February 18, 2008, carriers in the United States were no longer required to support AMPS and companies such as AT&T and Verizon Communications have discontinued this service permanently. AMPS was discontinued in Australia in September 2000, in India by October 2004, in Israel by January 2010, and Brazil by 2010.
Integrated Digital Enhanced Network (iDEN) is a mobile telecommunications technology, developed by Motorola, which provides its users the benefits of a trunked radio and a cellular telephone. It was called the first mobile social network by many technology industry analysts. iDEN places more users in a given spectral space, compared to analog cellular and two-way radio systems, by using speech compression and time-division multiple access (TDMA).
Terrestrial Trunked Radio, a European standard for a trunked radio system, is a professional mobile radio and two-way transceiver specification. TETRA was specifically designed for use by government agencies, emergency services, for public safety networks, rail transport staff for train radios, transport services and the military. TETRA is the European version of trunked radio, similar to Project 25.
The Government Radio Network (GRN) is a network of various systems in place across Australia that enable statewide trunked radio communication. The network operates through inter-linked sites for government and public services such as police, ambulance, fire, or roads authorities which require such a system to function properly. The main aim of the GRN is to consolidate all resources into one network, ensuring greater coverage and reliability than if each department had its own independent communication system. The existence of the GRN also reduces the amount of government money and resources needed to maintain communication between units of emergency and public service branches. Last, it allows effective intercommunication among these services in times of national or state emergency for coordination of wide-scale actions.
Project 25 is a suite of standards for interoperable digital two-way radio products. P25 was developed by public safety professionals in North America and has gained acceptance for public safety, security, public service, and commercial applications worldwide. P25 radios are a direct replacement for analog UHF radios, adding the ability to transfer data as well as voice for more natural implementations of encryption and text messaging. P25 radios are commonly implemented by dispatch organizations, such as police, fire, ambulance and emergency rescue service, using vehicle-mounted radios combined with repeaters and handheld walkie-talkie use.
The Enhanced Digital Access Communication System (EDACS) is a radio communications protocol and product family invented in the General Electric Corporation in the mid 1980s.
A trunked radio system is a two-way radio system that uses a control channel to automatically assign frequency channels to groups of user radios. In a traditional half-duplex land mobile radio system a group of users with mobile and portable two-way radios communicate over a single shared radio channel, with one user at a time talking. These systems typically have access to multiple channels, up to 40-60, so multiple groups in the same area can communicate simultaneously. In a conventional (non-trunked) system, channel selection is done manually; before use, the group must decide which channel to use, and manually switch all the radios to that channel. This is an inefficient use of scarce radio channel resources because the user group must have exclusive use of their channel regardless of how much or how little they are transmitting. There is also nothing to prevent multiple groups in the same area from choosing the same channel, causing conflicts and 'cross-talk'. A trunked radio system is an advanced alternative in which the channel selection process is done automatically, so as to avoid channel conflicts and maintain frequency efficiency across multiple talkgroups. This process is handed by what is essentially a central radio traffic controller, a function automatically handled by a computer system.
Motorola Solutions, Inc. is an American video equipment, telecommunications equipment, software, systems and services provider that succeeded Motorola, Inc., following the spinoff of the mobile phone division into Motorola Mobility in 2011. The company is headquartered in Chicago, Illinois.
Radio over Internet Protocol, or RoIP, is similar to Voice over IP (VoIP), but augments two-way radio communications rather than telephone calls. From the system point of view, it is essentially VoIP with push-to-talk. To the user it can be implemented like any other radio network.
Airwave Solutions Ltd. is a British mobile communication company that operates the Airwave network, a mobile communications network used by Great Britain's emergency services. The Airwave network is based on the specialist Terrestrial Trunked Radio (TETRA) specification. Airwave was acquired by Motorola Solutions in February 2016 and now operates as a wholly owned subsidiary.
Cambium Networks Corporation is a wireless infrastructure provider that offers fixed wireless and Wi-Fi to broadband service providers and enterprises to provide Internet access. An American telecommunications infrastructure company, it provides wireless technology, including Enterprise WiFi, switching solutions, Internet of Things, and fixed wireless broadband and Wi-Fi for enterprises. Publicly traded on the NASDAQ stock exchange, it spun out of Motorola in October 2011.
Communications servers are open, standards-based computing systems that operate as a carrier-grade common platform for a wide range of communications applications and allow equipment providers to add value at many levels of the system architecture.
Multi-Band Excitation (MBE) is a series of proprietary speech coding standards developed by Digital Voice Systems, Inc. (DVSI).
The Project 25 Inter RF Subsystem Interface is a non-proprietary interface that enables RF subsystems (RFSSs) built by different manufacturers to be connected together into wide area networks so that users on different networks can talk with each other. The wide area network connections using the ISSI provide an extended coverage area for subscriber units (SUs) that are roaming. The extended coverage area is important for public safety first responders that provide assistance in other jurisdictions during an emergency.
Police radio is a radio system used by police and other law enforcement agencies to communicate with one another. Police radio systems almost always use two-way radio systems to allow for communications between police officers and dispatchers.
NXDN stands for Next Generation Digital Narrowband, and is an open standard for public land mobile radio systems; that is, systems of two-way radios (transceivers) for bidirectional person-to-person voice communication. It was developed jointly by Icom Incorporated and Kenwood Corporation as an advanced digital system using FSK modulation that supports encrypted transmission and data as well as voice transmission. Like other land mobile systems, NXDN systems use the VHF and UHF frequency bands. It is also used as a niche mode in amateur radio.
Digital mobile radio (DMR) is a digital radio standard for voice and data transmission in non-public radio networks. It was created by the European Telecommunications Standards Institute (ETSI), and is designed to be low-cost and easy to use. DMR, along with P25 phase II and NXDN are the main competitor technologies in achieving 6.25 kHz equivalent bandwidth using the proprietary AMBE+2 vocoder. DMR and P25 II both use two-slot TDMA in a 12.5 kHz channel, while NXDN uses discrete 6.25 kHz channels using frequency division and TETRA uses a four-slot TDMA in a 25 kHz channel.
Etherstack is a provider of wireless communications software for the Professional/Land Mobile Radio and defense industries in Europe, Asia, and North America. Their products encompass wireless protocol stacks, IP-based communication networks, cryptographic communications, Software Defined Radio (SDR), and Software Communications Architecture (SCA) compatible waveforms.
The Norwegian Public Safety Network is a public safety network system based on Terrestrial Trunked Radio (TETRA). Nødnett is implemented by the Directorate for Emergency Communication. The network is primarily used for internal and interdisciplinary communication by the police, fire departments and health services. Nødnett is also used by several organisations participating in rescue and emergency work. Planning of the network started in 1995 and in 2006 the contract to build it was awarded to Nokia Siemens Networks. As Nokia Siemens Networks was unable to complete the contract, it was passed on to Motorola Solutions in 2012. The critical infrastructure of Nødnett was finished and was operational in all districts of mainland Norway by December 1, 2015.
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