
	Where results make sense

Topic: Erlang unit

Related Topics

Erlang distribution

Erlang programming language

Poisson formula

Call centre

ACD

Poisson process

Grade of service

Gamma distribution

Quality of service

DECT

QSIG

June 16

River Tame

Parrot

2 BC

	Erlang unit - Wikipedia, the free encyclopedia
		The dimensionless unit named the Erlang is a statistical measure of telecommunications traffic used in telephony.
		Erlang B formula works for loss systems, thus it applies to telephony systems both for fixed and mobile networks due to their real time nature where they simply do not (and are not intended to) provide traffic buffering.
		Erlang C formula works for queueing systems thus it applies to packet data networks (such as internet, etc) due to their non real-time nature.
	en.wikipedia.org /wiki/Erlang_unit (578 words)

	Agner Krarup Erlang - Wikipedia, the free encyclopedia
		Agner Krarup Erlang (January 1, 1878–February 3, 1929) was a Danish mathematician, statistician, and engineer who invented the fields of traffic engineering and queueing theory.
		Erlang was born at Lonborg (Lønborg), near Tarm, in Jutland.
		Erlang was also an expert in both the history and calculation of the numerical tables of mathematical functions, particularly logarithms.
	en.wikipedia.org /wiki/A._K._Erlang (650 words)

	Units: E
		One einstein (or Einstein unit) is the energy per mole of photons carried by a beam of monochromatic light.
		One enzyme unit is the quantity of enzyme needed to cause a reaction to process 1 micromole of substance per minute under specified conditions.
		The erlang is a dimensionless "unit" representing a traffic density of one call-second per second (or one call-hour per hour, etc.).
	www.unc.edu /~rowlett/units/dictE.html (2561 words)

	Units: U
		For components of blood, one unit is the amount of that substance that would normally be found in one unit of whole blood.
		The unit call is a dimensionless "unit" representing a traffic density of 100 call-seconds per hour, or 1/36 erlang.
		A unit magnetic pole repels an identical pole at a distance of one centimeter in a vacuum with a force of one dyne.
	www.unc.edu /~rowlett/units/dictU.html (1305 words)

	Erlang unit at opensource encyclopedia (Site not responding. Last check: 2007-09-06)
		The unit named the erlang is a statistical measure of telecommunications traffic used in telephony.
		The erlang calculation also determines "grade of service" or "blocking factor" - if a user tries to make a call during the busy hour, how likely is it that they will get a busy signal (typically a blocking factor of 5% or 1 in 20 is considered acceptable).
		The "Erlang C" calculation is often used to calculate the number of agents or customer service representatives needed to staff a call center.
	www.wiki.tatet.com /Erlang_unit.html (390 words)

	Erlang, Agner Krarup - Hutchinson encyclopedia article about Erlang, Agner Krarup (Site not responding. Last check: 2007-09-06)
		Especially important are his formulae for the probability of barred access in busy-signal systems and for the probability of delay and for the mean waiting time in waiting-time systems.
		Erlang also constructed a measuring bridge to meter alternating current (the so-called Erlang complex compensator), which was a considerable improvement on earlier apparatus of similar function.
		Erlang was born near Tarm in Jutland and studied at the University of Copenhagen.
	encyclopedia.farlex.com /Erlang,+Agner+Krarup (206 words)

	What is an Erlang
		Erlang traffic measurements are made in order to help telecommunications network designers understand traffic patterns within their voice networks.
		Erlang traffic measurements or estimates can be used to work out how many lines are required between a telephone system and a central office (PSTN exchange lines), or between multiple network locations.
		Agner Krarup Erlang was born in 1878 in Lønborg, Denmark.
	www.erlang.com /whatis.html (743 words)

	Define erlang - a Whatis.com definition - see also: Erlang B, Erlang C (Site not responding. Last check: 2007-09-06)
		The Erlang programming language is not the same thing as the erlang, a unit of traffic density.
		An erlang can be applied to the group of lines in a telephone trunk line or to the traffic in a telephone call center.
		Erlang C is a calculation for how many call agents (answerers) you'll need in a call center that has a given number of calls per hour, a given average duration of call, and an acceptable level of delay in answering the call.
	searchnetworking.techtarget.com /sDefinition/0,,sid7_gci212073,00.html (426 words)

	Erlang programming language - a Whatis.com definition (Site not responding. Last check: 2007-09-06)
		Erlang is described as a functional programming language, meaning that it emphasizes the evaluation of expressions rather than the execution of commands.
		Erlang provides dynamic data types, allowing programmers to develop system components (such as message dispatchers) that do not care what type of data they are handling and others that strongly enforce data type restrictions or that decide how to act based on the type of data they receive.
		Erlang's bytecode is identical on all platforms, and a network of Erlang nodes may consist of any mix of NT, UNIX, or other supported platforms.
	searchsmb.techtarget.com /gDefinition/0,294236,sid44_gci212072,00.html (507 words)

	Traffic Modeling in Call Centers (Site not responding. Last check: 2007-09-06)
		Erlang B is a "blocked calls lost" model, in which, when servers are unavailable, the service requestor is denied service and must retry the request.
		Unlike the Erlang B model, in which blocked service requests are considered lost, in the Erlang C model, requests that cannot be satisfied immediately are delayed until a server is available.
		Using the Erlang C formula, the software calculates the GoS for ten different phone line and staff combinations and shows in row 10 that the minimum staff that meets or exceeds the specified GoS is 19.
	www.diagnosticstrategies.com /traffic_modeling.htm (2974 words)

	[No title]
		DECIBEL (dB) A unit measurement represented as a ratio of two voltages, currents or powers and is used to measure transmission loss or gain.
		One Erlang is the intensity at which one traffic path would be continuously occupied, e.g.
		ERLANG B TABLE A widely used table derived from a mathematical formula which allows the determination of the traffic capacity of a given group of circuits.
	ftp.digital.com /pub/doc/telecom.glossary.txt (7466 words)

	units
		unit of thermal insulation of clothing; standard clothes have insulation of about 1 clo, the warmest is about 4 clo per 2.5 cm/1 in of thickness
		unit of measurement used in the 12th century to measure the extent of arable land; 1 hide = 256 acres (104 hectares)
		unit of distance used in navigation, equal to the average length of one minute of arc on a great circle of the earth, or 1,852 m/6,076.12 ft
	home.tiscali.be /koweymeis/converter/extra/units.htm (1818 words)

	Erlang from FOLDOC (Site not responding. Last check: 2007-09-06)
		An interpreter in SICStus Prolog and compilers in C and Erlang are available for several Unix platforms.
		Erlang is a unit without dimension, accepted internationally for measuring the traffic intensity.
		This unit is defined as the aggregate of continuous occupation of a channel for one hour (3600 seconds).
	foldoc.org /?Erlang (206 words)

	A.K. Erlang:
		Erlang published other papers, invented a tester for measuring AC current and did many practical things to help the company.
		Using the Erlang B Table it can be determined that the grade of service is about.04 If the traffic remains at 2 erlangs and the desired grade of service is.01 then 7 lines are required.
		Other tables commonly used are the Erlang C table for Automatic Call Distributors (ACDs.) With this formula is is assumed that calls do not disappear, but are held in a queue until serviced.
	cs.roosevelt.edu /ru-telecom/331/ERLANG.htm (1871 words)

	[No title] (Site not responding. Last check: 2007-09-06)
		Traffic flow through a switch or trunk group is defined as the product of the number of calls during a period of time and their average holding times.
		In the present case, the correct value is 1.667 erlang, such that the error amounts to +4.9 %.
		The measurement or calculation of the traffic value is performed on the basis of parameter values obtained from counting means 51-56 controlled or updated by the CPU 4.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=00/05864.000203&ELEMENT_SET=DECL (3925 words)

	Monkeyfist.com: Another year, another Erlang conference
		Open Source version of Erlang which is both freely downloadable, and free for any use you'd care to put it (I believe that even Academic Wankering is permitted, perhaps even encouraged).
		Functions: the basic lexical unit of computation in Erlang, a function looks a bit like a Prolog rule: you can have multiple clauses which are selected by pattern matching the arguments.
		Erlang's bit syntax presents an alternative way to do string destructuring, which should be interesting just for the fact of being an alternative.
	monkeyfist.com /articles/580 (980 words)

	[No title] (Site not responding. Last check: 2007-09-06)
		Units of Measure by Stephen Dresner # 6.
		Any unit defined to contain a '!' character is a # # primitive unit which will not be reduced any further.
		These units are units which measure # the luminance of a surface with a specified exitance which obeys # Lambert's law.
	www.neuron.yale.edu /neuron/docs/units/units.dat (7174 words)

	DUAL Gatekeeper User Guide
		The Erlang B Traffic model is an analytical model for calculating call blocking and is the basis for the traffic calculator which you are using.
		The Erlang B traffic model defines the relationship between three variables and each of these variables is represented by a section of the Erlang B Calculator.
		The Erlang C Calculator is based on the Erlang C traffic model and is used for calculations involving the queuing of telephone calls.
	www.voip-calculator.com /calculatormanual/single.htm (8062 words)

	erlang (Site not responding. Last check: 2007-09-06)
		A unit used to describe traffic density in telephony, named for A. Erlang (1878-1929), a Danish mathematician.
		A unit of traffic intensity: the average number of simultaneous connections observed during a measurement period.
		A unit of message loading, used to describe usage of leased facilities.
	www.sizes.com /units/erlang.htm (93 words)

	Erlang unit - TheBestLinks.com - A. K. Erlang, Data, Erlang programming language, Netherlands, ... (Site not responding. Last check: 2007-09-06)
		Erlang unit - TheBestLinks.com - A. Erlang, Data, Erlang programming language, Netherlands,...
		For example, if a bank has two tellers and during the busiest hour of the day they're both busy the whole time, that would represent two erlang of traffic.
		Erlang C - Queued systems whereby a request can be queued and does not have to be served immediately.
	www.thebestlinks.com /Erlang_unit.html (469 words)

	Stochastic Processes and Queuing Models, Queueing Theory - Numericana
		The becquerel may be loosely described as the "stochastic reciprocal of the second" (the herz is another "reciprocal of the second" which is used for periodic phenomena, not random ones).
		The symbol for the unit is "E", which is capitalized, as is always the case for a unit named after a person (e.g., "Hz" for hertz).
		The plural form is "erlangs", whereas the symbol "E" is invariable.
	home.att.net /~numericana/answer/stochastic.htm (1679 words)

	[No title]
		One Erlang is the intensity at which one traffic path would be countinuously occupied, e.g., one call per hour.
		ERLANG B TABLE A method for determining grade of service for a specified amount of traffic.
		Replaces, and is identical to, the order unit "Cycles-per-second." HOMING Returning to the starting position, as in a starting switch.
	www.textfiles.com /phreak/mci2.phk (1759 words)

	[No title]
		The objective of teletraffic theory can be formulated as follows: “to make the traffic measurable in well defined units through mathematical models and to derive the relationship between grade-of-service and system capacity in such a way that the theory becomes a tool by which investments can be planned".
		With a limited number of sources, time congestion, call congestion, and traffic congestion becomes different, and the so-called PASTA-property is replaced by the general arrival theorem, which says that the state of the system observed by a customer (call average), is equal to the state probability of the system with this customer removed (time average).
		The extension and type of measurements and the parameters (traffic characteristics) measured must in each case be chosen in agreement with the demands, and in such a way that a minimum of technical and administrative efforts results in a maximum of information and benefit.
	www.itu.int /ITU-D/study_groups/SGP_1998-2002/SG2/Documents/2001/258E.doc (3284 words)

	Traffic Engineering Training:Traffic Engineering Fundamentals Training Onsite
		The Erlangs and Bandwidth Calculator can be used to estimate the bandwidth which must be provided through an IP based to satisfactorily transport a given busy hour traffic level.
		The Erlang C Calculator can be used to estimate how many agents are required in a call centre, if the quantity and length of incoming calls are known.
		It should be used instead of the Erlang B Calculator when the number of traffic sources is finite (less than ten times the number of lines).
	www.eno.com /government/traffic_engineering_training_fundamentals.html (456 words)

	Erlang Extreme Programming & Refactoring, Was: non-telecom in erlang
		FutureSource is using Erlang in an XP development environment.
		Erlang Unit Tests (our approach) We use Erlang for developer tests since they are the simplest thing that could possibly work to test Erlang fully including the synchronization multiple processes.
		Erlang Acceptance Tests We use our own scripting language interpreted by a Perl script for the acceptance tests.
	www.erlang.org /ml-archive/erlang-questions/200302/msg00087.html (345 words)

	Intel® ProShare® Products - Traffic Engineering Model for LAN Video Conferencing
		The Erlang unit of measure is named for the Danish mathematician A.K. Erlang, who pioneered traffic measurements in the early twentieth century.
		Erlang C tables don't apply to ProShare systems because calls are not queued, so we need to choose between Erlang B and Poisson tables.
		Using the Erlang B table (page 7) we find the row that has 4 trunks, then we read the Erlang value from the 5% column (1.52 Erlangs).
	www.intel.com /support/proshare/sb/cs-011643.htm (2043 words)

	Robust Erlang B Calculator
		In the 1920's, a Danish mathematician and telephone traffic engineer named A. Erlang studied delays in telephone traffic and came up with several models which are still in use today.
		Another common unit is the Erlang, representing the ratio of Arrival Rate to Service Rate (lambda/mu).
		Traditional, straightforward evaluation of the given equation results in overflow errors unless rho and c are relatively small (between 100 and 200).
	www.cas.mcmaster.ca /~qiao/publications/erlang/newerlang.html (690 words)

	Encyclopedia Search (Site not responding. Last check: 2007-09-06)
		unit, a unit to measure telecommunications (or...(or other) traffic
		in whose honour the unit of telecommunication traffic intensity, the...is named.His
		He would conduct his own measurements and was...
	www.encyclopedian.com /search.php?searWords=Erlang (140 words)

Try your search on: Qwika (all wikis)