[Asterisk-Users] Asterisk - Connction to analog PBX?

[Martin Pycko]

G.729 license is $10 per channel not $15.

Martin

On Thu, 15 May 2003 wasim at convergence.com.pk wrote:

> On Wed, 14 May 2003, Cory Vaughan wrote:
>
> > I plan to have a support center in Bangladesh that is
> > taking calls from american 1-800 numbers. They have
> > Quintum VoIP switches which do the IAX and g.729 i
> > think it is.
>
> I really doubt Quintum does IAX. However, * supports G.729 natively now,
> but you have to buy licenses at USD 15 per channel from digium. Besides
> IAX is a VoIP protocol, G.729 is a codec. Minor difference.
>
> > The thing is is that I dont have alot of money and I
> > plan to take overflow and supervisor calls here in
> > Plano Tx maybe 8 extensions.
>
> * takes the cake in levelling the playing field for those with less $$$
>
> > My question is after I set up Asterisk what do I stick
> > in the box to connect to the 8 extensions. Also I
>
> Extensions can be standard analog phones (ala 2 x TDM400 FXS cards)  will
> give you 8 extensions, or VoIP extensions to gnophone or someother SIP
> client. I'd highly recommend VoIP extensions, simple, cost effective, and
> would make managing the Bangladeshi side easier.
>
> But, remember, unless Quintum is providing you TDM<-->IP voice conversion,
> you'll need to get a ZAPTEL interface ala T100P or something like that to
> terminate incoming calls from regular phone users. And, if Quintum is
> doing that then you need to ensure you can do the SIP/G.729 with them
> effectively (ala, no NAT etc).
>
> > plan to use only a cable connection here in Tx.,
> >  3 mbps/384kbps which I planned to use quintum with
>
> okie, but just be vary of your upstream, congestion and latency, might
> help to do some tests on your link to verify everything will be hunky dory
> for VoIP (cause you don't want to loose your customers due to choppy
> voice)
>
> > because they compress each channel to 15kbps but I
> > dont know about asterisk whatits compression goes down
> > to. With taht work for 8 extensions. And does anyone
>
> again, * will work with G.729 which is ~8 kbps compression (but IP
> overheads will take this to about 15kbps) or GSM which is 13 kbps
> compressions (with IP overheads taking this to about 26 kbps)
>
> > know of any good Sip Software for monitoring and
> > gathering statistics?
>
> * will monitor and gather all the statistics you want, or can be built to
> do that, SIP software on its own should not be doing this...
>
> if you need any support in the region, we can help, afterall Bangladesh
> is only a short hop-skip away... and i always wanted to visit Dhaka
>
> --
> Mirza Wasim Baig | Principal Consultant | Convergence Business Systems PK
> VOX: +92(51)282-0628 x7400 | FAX: +92(51)282-0621 | GSM: +92(300)850-8070
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