[Asterisk-Users] asterisk with big number of extentions.

[William Waites]

On Thu, Jan 29, 2004 at 06:27:33AM -0600, Rich Adamson wrote:
> > We are thinking of making network of about 25000 extension numbers.
> > These extension will be SIP phones. Asterisk will be connected to some VoIP 
> > gateways through H323 which will allow to
> > terminate calls.
> > 
> > Can Asterisk handle such kind of load?
> 
> No problem, as long as none of them make any calls. 

The number of extensions is relevant. I am not
sure the level at which begins to matter, but the
comment reproduced below from pbx.c gives some
idea that eventually it may be an issue worth
considering. It may be that at 25k extensions 
the O(N+M) search starts to become noticeable.

/*
 * I M P O R T A N T :
 *
 *              The speed of extension handling will likely be among the most important
 * aspects of this PBX.  The switching scheme as it exists right now isn't
 * terribly bad (it's O(N+M), where N is the # of extensions and M is the avg #
 * of priorities, but a constant search time here would be great ;-)
 *
 */

But of course there are ways around using ENUM
and the like.

-w
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