[Asterisk-Users] CRM integration (was RE: CallerID)

[Michiel van Baak]

On 14:01, Wed 25 May 05, Rusty Shackleford wrote:
> > -----Original Message-----
> > From: asterisk-users-bounces at lists.digium.com 
> > [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of 
> > Michiel van Baak
> > Sent: Wednesday, May 25, 2005 12:04 PM
> > To: asterisk-users at lists.digium.com
> > Subject: Re: [Asterisk-Users] CRM integration (was RE: CallerID)
> > > 
> > > And that's the real trick. Web browsers, unless they are 
> > instructed to 
> > > do otherwise, don't DO anything once they've completed 
> > loading a page. 
> > > So without instructing them to refresh, they aren't going 
> > to be aware 
> > > of a server-side change, such as an incoming call. For that, you're 
> > > going
> > 
> > This is not true. 
> 
> I beg to differ...
> Please re-read my statement that "...unless instructed to do
> otherwise..."

I'm sorry. You are correct, I didn't read it good enuf.
Remind me not to post comments when dead tired and stressed
out at work :)

> 
> > If it was for pure HTML only, yes, you are 
> > correct. But with javascript you can start a timer and 
> > execute a javascript function every once in a while. If this 
> > javascript loads an XML document off the server, you're there ;)
> 
> So you have now instructed the browser, via javascript, to periodically
> poll the server "every once in a while".
> This is exacly what the previous poster (the one I replied to) was
> trying to AVOID, and for good reason. It doesn't scale. In order to be
> effective as a way to present the user with caller-ID driven data, it
> would have to poll quite frequently.  With a handful of clients
> constantly doing this, the impact is inconsequential, but as the number
> of clients hammering the server in this manner climbs, things are going
> to break. 

I have to disagree.
I bet your PBX is not as busy as $random_website. Our PIII
with 512 MB RAM is serving 400 domains all php powered and
it does a sweet 120 GB/month. 
In my tgz file the php webpage is requesting a php file that
generates XML. Of course it would be better to generate a
clean XML file with the agi so the database stuff is only
triggered on new calls.
All that is done from the clients then is reading the XML
from the server every (lets say second) once in a while.
This should be as scalable as needed for a HUGE amount of
clients.
> 
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-- 
Michiel van Baak
http://lunteren.vanbaak.info
michiel at vanbaak.info
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"Two of the most famous products of Berkeley are LSD and BSD. I don't think that this is a coincidence."