[asterisk-users] PSTN to SIP line ratio

[Jorge Mendoza]

Shahnawaz Mir wrote:
> Hi,
>
> I am planning to deploy an Asterisk PBX for 100-200 users. I am not  
> sure about PSTN incoming/outgoing line ratio for SIP users. I mean if  
> you recall dial up internet the common line ratio is 1:10 (one line  
> for 10 users on access server or an E1 for 300 users). Can somebody  
> tell me what is the good ratio for incoming and outgoing analogue/ 
> digital PSTN lines.
>
> Regards
>
> Smir
>
> _
You need to undertand "traffic".  See for instance:

 http://www.wirelesscommunication.nl/reference/chaptr04/erlang/erlang.htm


Regards
Jorge Mendoza