Gourt > Business > Telecommunications > Two Way Radio > Trunking (1)
In computer networking, trunking describes using multiple network cables or ports in parallel to increase the link speed beyond the limits of any one single cable or port. (See port trunking for more details.)
In telecommunications, a trunk is one ofFrom the Federal Standard 1037C and from MIL-STD-188 and from the Code of Federal Regulations, Telecommunications Parts 0-199:
- In a communications network, a single transmission channel between two points that are switching centers or nodes, or both. See Trunked Radio Systems.
- A circuit between switchboards or other switching equipment, as distinguished from circuits which extend between telephone exchange switching equipment and information origination/termination equipment.
Trunks may be used to interconnect switches, such as major, minor, public and private switches, to form networks. In popular parlance and in the UK at least a Trunk call was a long distance one as opposed to a Local call. See Subscriber trunk dialling and Trunk vs Toll.
Trunking in an exchange
Trunking also refers to the connection of switches and circuits within a telephone exchange.Flood, J.E., Telecommunications Switching, Traffic and Networks Chapter 4: Telecommunications Traffic. New York: Prentice-Hall, 1998. Trunking is closely related to the concept of Grading. Trunking allows a group of inlet switches at the same time. Thus the service provider can provide a lesser number of circuits than might otherwise be required, allowing many users to "share" a smaller number of connections and achieve capacity savings. Motorola, Trunking Communications Overview, last accessed 13 February 2005.The Genesis Group, Trunking Basics, last accessed 13 February 2005. More on [ Trunking ]
LIVE Demo VLAN trunking wrkng on #Juniper & #Cisco switches TODAY 4pmGMT/5pmCET/8amPST 100 SEATS 1ST COME 1ST SERVED http://tiny.cc/7FlHH
junosninja (Sarah Wright) Tue, 15 Dec 2009 11:30:27 -0000
LIVE Demo VLAN trunking wrkng on #Juniper & #Cisco switches TODAY 4pmGMT/5pmCET/8amPST 100 SEATS 1ST COME 1ST SERVED http://tiny.cc/7FlHH
SIP Trunking http://www.voip-catalog.com/voip_catalog_sip-trunking_1.html
fine8 (harold) Tue, 15 Dec 2009 11:26:11 -0000
SIP Trunking http://www.voip-catalog.com/voip_catalog_sip-trunking_1.html
Discussing new concept of SIP trunking for SME with Belgacom commercial & technical staff
carmelo (Carmelo Zaccone) Tue, 15 Dec 2009 09:46:34 -0000
Discussing new concept of SIP trunking for SME with Belgacom commercial & technical staff
cool1112: Free calls: IPTV · Mobile VoIP · Outbound Call Center · Residential VoIP · SIP Trunking · VoIP API · VoIP Term http://url4.eu/vy15
alterna_TV (Web-TV alterNativ) Tue, 15 Dec 2009 09:10:01 -0000
cool1112: Free calls: IPTV · Mobile VoIP · Outbound Call Center · Residential VoIP · SIP Trunking · VoIP API · VoIP Term http://url4.eu/vy15
new post on my blog: The Great Trunking of the Past http://inkhaven.net/2009/12/the-great-trunking-of-the-past/
inkhaven (Christie Yant) Tue, 15 Dec 2009 05:23:37 -0000
new post on my blog: The Great Trunking of the Past http://inkhaven.net/2009/12/the-great-trunking-of-the-past/
But you're using T1 trunks in Asia-Pacific RT @MikeOnUC: #SIP trunking hot topic. My 2cents from an Aspect perspective: http://bit.ly/7pwSHb
aublumberg (Andre Blumberg) Tue, 15 Dec 2009 04:52:05 -0000
But you're using T1 trunks in Asia-Pacific RT @MikeOnUC: #SIP trunking hot topic. My 2cents from an Aspect perspective: http://bit.ly/7pwSHb
Actions Communications, Inc - Provide voice and data communications using LTR trunking technology throughout the greater Puget Sound area. Includes product listings and service area information .
Base Radio Systems Program - Provides information on the competitively awarded set of contracts that offer a complete menu of Land Mobile Radio products to all U.S. Federal Agencies worldwide. Managed by the Army.
Champion Communication Services, Inc. - Provide UHF radio communication products and operate UHF trunked networks providing voice, dispatch and wireless data services. Includes operational area information and a listing of dealers .
Crudele Communications - Sales and service for two-way radio trunking repeater systems. Conventional two-way including UHF, VHF and low-band. FCC licensing and Nextel Phones.
Meta Description: [ Two-Way radio sales and service including Trunking, Conventional, ICOM, GE & Com-Net/Ericsson & Custom Dispatch Consoles ]
Dade County Frequencies and Talkgroups - Provides a listing of aviation, marine, business, and federal frequencies together with links to related resources .
Entropia Network - Commercial wireless voice and data provider with its own trunked radio network in Belgium.
Meta Description: [ Entropia - Radio Trunking Operator Belgium- TRAXYS alternative Netherlands, Portofoon, Radio Trunking Network Operator work on Voice and Data Trunking, Telemetry, Trunking, PMR, PAMR, VHF, UHF, Operator, P25, APCO SHELTER, Tait, Kenwood, Motorola ]
Fylde Micro, Ltd. - Provides trunking systems to OEMs, dealers, and end users. Includes dealer locator.
Meta Description: [ Fylde Micro, mpt1327, trunked radio, PMR, solutions include, AVL, GPS, MAP27, mobile radio, Wireless mobile data. ]
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Genesis Group - Article describing the basics of trunking together with an industry glossary and available software programs.
Gould Electronics - Offers trunked radio solutions as well as shop watch schemes, conventional 2-way radio and fire service communications systems.
Meta Description: [ Welcome to Gould Electronics - 2 Way Radio Limited, MPT 1327, Radio Trunking for shop watch schemes and fire service communications using MPT1327 Radio Trunking. ]
GTRAC - Resources for EDACS TrunkTracking. Includes guides on frequencies, programming, talk groups, and related links.
Land Mobile Spectrum Planning Options - Article discussing the sharing of trunked public safety radio systems among Federal, State, and local organizations .
NIC Technologies - Independent service provider of radio communication systems specializing in trunked radio and wireless point-to-point systems.
Nighthawk Communications, Inc. - Offers VHF and UHF wide area LTR System, sales, rentals and repair services in the Los Angeles area.
Team Simoco - Designs, installs, and maintains conventional and trunked radio systems.
Meta Description: [ Radio Communications: PMR systems, TETRA and DMR, portables and base stations, controllers ]
TETRA - Forum representing users, manufacturers, operators, test houses and telecom agencies for terrestrial trunked radio, an open digital trunked radio standard defined by the European Telecommunications Standardisation Institute .
Meta Description: [ Terrestrial Trunked Radio (TETRA) is an open digital trunked radio standard for professional mobile radio users. TETRA is defined by the European Telecommunications Standardisation Institute (ETSI). The TETRA MoU (Memorandum of Understanding) was established in December 1994 to create a forum whi... ]
Trunking Information - Information on several Motorola systems, the EDACS system which is operated by the City of Clearwater, as well as conventional frequencies for the Greater Tampa Bay Area.
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United States Patent: 5,815,799 - Priority system for a wide area transmission trunked communication system. Here is the LTR Multi-Net Patent that explains the signaling protocol.
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United States Patent: 5,822,314 - Communications system and method of operation. A typical operational function, using timing information inherent in the transmissions, is the encryption/decryption process within the Trans European Trunked Radio (TETRA) standard.
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