that would be the erlang formula... you still end up with the ratio though... oops, a quick google reminds me that erlang is for call centers... wonder if you could use it for voip providers... steveT, you would know...
daveC
FORMULA TO CALCULATE PHONE LINES NEEDED
What is the formula for calculating the number of lines for an inbound call center if we have the BHCA (Busy Hour Calls Average) and QOS (Quality of Service or Service Level)? Online calculators give the answer but not the formula. Any help would be much appreciated. Thanks. -- Sameer Maini, Target Corporation
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Calculate Call Center Staffing with Excel
By Joannès Vermorel, May 2008This guide explains how to optimize the number of agents to reach the desired service level. This guide applies to call centers and contact centers. The theory is illustrated with Microsoft Excel. Advanced notes are available for software developer who would like to reproduce the theory into a custom application.
Download: erlang-by-lokad.xls (Microsoft Excel Spreadsheet)
When opening the spreadsheet, Excel will warn you than this document contains macros. Those macros correspond to the Erlang-C formula (see explanation below). You need to activate the macros in order to reproduce the calculations.
mroberts1818@gmail.com wrote:
Thanks, What about avg per min per month usage per household? ------Original Message------ From: | dave cantera | To: mroberts1818@gmail.com To: Commercial and Business-Oriented AsteriskDiscussion ReplyTo: david.cantera@IBSOneCall.com Sent: Aug 27, 2008 2:18 AM Subject: Re: [asterisk-biz] Residential VoIP Stats mike, typically, one might have a 6 to 1, 10 to 1, or in vonage's case (I think) 15+ to 1 ratio of customers to lines. the more customers the higher the ratio, of course. there is an erlang formula (spelling) that the telcos use but it still comes down to... 'all lines are busy, please try your call later'... how many times do you want a customer want to hear that msg. daveC mroberts1818@gmail.com <mailto:mroberts1818@gmail.com> wrote: Hi list, Anyone know where I can find some statistics on residential calling patterns? I.e. Total number of minutes called per month Time of day patterns (probably pretty obvious but curious) Etc. Many thanks. -Mike Sent from my Verizon Wireless BlackBerry _______________________________________________ --Bandwidth and Colocation Provided by http://www.api-digital.com <http://www.api-digital.com> -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net <http://www.astricon.net> asterisk-biz mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-biz <http://lists.digium.com/mailman/listinfo/asterisk-biz> -- My wife's sister is in California. I should buy her a Videophone2008! Truly, The Next Best Thing to Being There! -- Interlocking Business Solutions, LLC 856.380.0894 Sent from my Verizon Wireless BlackBerry _______________________________________________ --Bandwidth and Colocation Provided by http://www.api-digital.com-- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-biz mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-biz
-- My wife's sister is in California. I should buy her a Videophone2008! Truly, The Next Best Thing to Being There! -- Interlocking Business Solutions, LLC 856.380.0894
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