Nice goin'!! I will use this for a reference point to establish baseline numbers of phone lines. The good news is that the equation is not linear (eg 45 people need 5 lines, 100 need 10 lines). So I can double my potential users and ONLY need 2 more lines (qty 7). The bad news is that I don't 100% think I will have purely random connections.
On Thu, Sep 04, 2003 at 12:48:58PM -0700, George Pajari wrote: > The question was posed: > > "incomming calls for 45 or so people that will call in 3 or 4 time each > day during (approx) normal business hours" > > The comment was made (taken out of context): > > "The quick math says that 45 people with 4 calls is 180 calls a > day. In a 8 hour day you have 480 minutes. From 480 minutes 1 port could > handle the load if the call was under 2.5 minutes long and everyone > waited till it became available." > > Unfortunately as we all know, asking callers to guess when the line is > free and equally spacing their calls is not terribly realistic (as the > author of the comment above goes on to imply). > > So how does one analyse such a situation? Using statistical traffic > modelling! > > For more information, see http://www.erlang.com/calculator/erlb/ > > Plug in: > Busy Hour Traffic: 0.937 Erlangs > (based on 45 * 4 * 2.5 / 480) > > Acceptable Blocking Factor: 1% > (we will accept 1 in 100 calls receiving a busy signal) > > Result: > you will need 5 incoming lines. > > If you are willing to tolerate (say) 3% of calls receiving a busy > signal, you can get by with 4 lines etc. and etc. > > Hope you find the above useful in planning your Asterisk installation. > > _______________________________________________ > Asterisk-Users mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
