[OpenSIPS-Users] OpenSIPS as regional/national office solution

[Skyler]

Mark -

 Thanks for sharing your thoughts, they are definitely helping to put the
pieces of this puzzle together. Today I spent most of the day mapping out
each office via the net and found the common backbone interconnects. At
these x-connects I found 2 data centers. All offices are 30-40ms from one or
the other and both DC's are 15-20ms from each other. I couldn't figure out
what the distance would be from the DC to the provider, though I know the
provider is in a major DC and one Province over so it can't be more than
15-20ms across the backbone.

 Both DC's offer dedicated servers, so we are going to look into putting one
server at each DC and ditch the original regional/national plan for a more
conservative and easy to manage plan. I'm confident now that there will be
better overall quality going this way.

Now its time to unscramble the mess that is my install notes and document a
clean OpenSIPS+Asterisk install before moving further. After that I'm a bit
lost though as I know that we need NAT but not sure which solution is best /
easiest to work with (RTPproxy, NAThelper, MediaProxy). From what I've read
up on each, Nathelper seems to be built into Osips whereas RTPproxy and
MediaProxy require a possibly troublesome install vs loading module/adding
code. Searching the mailing archives hasn't been enough for me to decide on
a winner.

 From what it sounds like, you have a lot of experience in the setup that
I'm working on building. Out of curiosity, which method do you prefer for
resolving far-end NAT issues?


Skyler



On Mon, Jan 17, 2011 at 1:26 AM, Mark Sayer <datapipes at avtb.co.nz> wrote:

> Skyler -
>
> We are a South Pacific regional provider of hosted PBX services so I
> may be prejudiced toward a like infrastructure. Some of our customers
> are 3000kms from our servers but the ping times are still less than
> 50ms so I'm curious why yours are so long. That said, 200ms is sort of
> the magic number you don't want to exceed. (Having said that, we do
> get some pretty decent call quality connecting to some terminators who
> are over 250ms away. 50+250 and its still OK.) Call quality is 99%
> Internet connection. OpenSIPS + Asterisk works perfectly with every
> call but if the Internet (which you can't control) plays up you get
> flack for providing a bad service.
>
> I'd recommend spending some time looking at your Internet connections.
> Can you get them all from the same provider? (I don't even know what
> sort of connections you are talking about. We actually get business
> grade voice quality from ADSL over copper.) Can you locate your server
> in a data center that has good connections to both your ISP and your
> terminator? My dream has always been to have a large rack of equipment
> in the back office but to make our service work I've had to locate in
> a major data centre hundreds of kms away. Our office isn't nearly as
> impressive as our service is but that's what the customers pay for.
>
> I'd only put servers in the offices if there was some reason that
> functionality was needed there. Even if you need a receptionist at
> each office that can all be handled from a single Asterisk box.
>
> Just more thoughts.
> Mark
>
> On Mon, Jan 17, 2011 at 6:11 PM, Skyler <skchopperguy at gmail.com> wrote:
> > Hi Mark,
> >  Thanks for the reply. So if I understand correctly, I am thinking too
> big.
> > K.I.S.S as some say.
> > The existing PBX's are extremely old, so breakdowns & phones are a
> problem
> > and we don't want to repair anymore. In the suggested scenario would you
> > recommend replacing the existing hardware (as they breakdown) with IP
> phones
> > and Asterisk at each office then or just ditch the Asterisk and have all
> the
> > phones register to OpenSIPS directly at HQ? My concern is call quality
> with
> > 110ms to HQ then 75ms to provider = 185ms from furthest office, is this
> > still not an issue?
> > Thanks,
> > Skyler
> >
> > On Sat, Jan 15, 2011 at 4:55 PM, Mark Sayer <datapipes at avtb.co.nz>
> wrote:
> >>
> >> Here is one suggestion:
> >> - single OpenSIPS & Asterisk at central office
> >> - use Asterisk as gateway to PSTN (for all offices)
> >> - connect remote office PBXs to central office using using multi-port
> >> FXS gateways
> >> - 110ms is no problem
> >> - single system admin point, single cpu, 200 or more concurrent calls
> >> - no admin, low cost at remote offices
> >>
> >> Mark
> >>
> >
> > _______________________________________________
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> > Users at lists.opensips.org
> > http://lists.opensips.org/cgi-bin/mailman/listinfo/users
> >
> >
>
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