[From nobody Thu Jul  9 19:50:16 2009
From: =?iso-8859-15?q?Ra=FAl_Alexis_Betancor_Santana?=
	<rabs@dimension-virtual.com>
Organization: =?iso-8859-1?q?Dimensi=F3n_Virtual?= S.L.
To: lists@grounded.net
Subject: Re: [OpenSIPS-Users] Is opensips a front end to asterisk?
Date: Tue, 7 Jul 2009 20:47:01 +0100
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On Tuesday 07 July 2009 20:15:01 lists@grounded.net wrote:
> On Tue, 7 Jul 2009 14:02:11 -0400, Alex Balashov wrote:
> >=A0Specific and well-parameterised questions really are the key.
>
> I'll certainly do that, once I start understanding the product but for no=
w,
> I'm just trying to get a handle on basics, not deep in depth
> understandings, just enough to formulate a plan.

You should go into deep knowleadge, it's a MUST to work with a sip proxy. Y=
ou=20
could begin reading the "Getting starting gide" and so.

> One was asking about the viability of using opensips on ESXi. Because of
> how easy it is to use snapshots, backup and so on, this would be the best
> working environment. So my question was, does opensips have any hardware
> timing requirement issues such as asterisk does. If timing is not critica=
l,
> as a voip server is, then opensips must run nicely in a virtual manner.

Yes, you could use it into a VM, no timming issues like Asterisk. Talking=20
about backup and so ... you only need to do a backup of the .cfg file and t=
he=20
database backend you use, so you will not get any real advantage of running=
=20
inside a VM from backup point of view.

> I don't have any numbers to work with, which is why I say scalable. I'm
> looking for something which can help me to scale a voip based application
> to many users. So let's say hundreds of users so that we have a number. I
> know many of you are running many thousands so this should be a good
> starting point.

It depends on lot of variables, like available mem, CPU power, network (the=
=20
most important part), but also how complex is your .cfg about request=20
proccessing, how do you handle database request, etc.
So there is not a magic formula, but there are sip-proxies around the world=
=20
working with Million of users.

> This is how I would have approached this, until I started looking for a s=
ip
> gateway/load balancer.

That's a setup, not direcly related with the software you use.

> This should be pretty straight forward to those who have pro setups and
> want as much reliability as possible. I want to have two separate locatio=
ns
> so that I can fail over, simple as that really.

There are not "simple" scenarios in SIP world and faiolver is very-complex=
=20
one.

> >-From what I can tell, opensips could act as a pbx on it's own but it can
> > act as a proxy/load >balancer/gateway to asterisk systems as well.
>
> This is what I asked about in this thread a couple of times now. It's not
> fully clear to me, even after reading. It sometimes sounds like opensips
> can be a voip server though it does not provide other media services such
> as voice mail and so on. I get that it is a gateway but I'm trying to get=
 a
> better understanding of FROM that point on.

That's because Opensips it's a proxy, not a PBX, not a B2BUA, etc., it does=
n't=20
manage media, so you need some "complements" to have a "full-featured VoIP=
=20
system"

=2D-=20
Ra=FAl Alexis Betancor Santana
Dimensi=F3n Virtual
]