[asterisk-users] Multi-tenant with receptionist features for managed service

[Gavin Henry]

2009/3/17 Gordon Henderson <gordon+asterisk at drogon.net>:
> On Tue, 17 Mar 2009, Geraint Lee wrote:
>
>> We can put about 9/10 calls using SIP/gsm through our BT Business Network
>> ADSL package connection (832kbit upstream, £65/month) before you notice
>> the
>> quality starting to drop, but you could always get two connections and
>> "bond" them together into one using openvpn or some other method if you
>> wanted to.
>
> Ugh. GSM )-:
>
> I've never really had much luck with BT as an Internet provider either -
> their wholesale network - good, retail broadband, bad...
>
> In theory, you should be able to get 10 G711 SIP calls over a business
> quality 830Kb/sec upload ADSL line. I get 9 on my test setup before any
> packet loss. I managed 11 calls using IAX over the same line before loss.
> (Entanet ADSL and a Draytek router - £25 a month)
>
> Intersting idea re. using openvpn or similar.. I have sites with 3 ADSL
> connections - one for incoming calls, one for outgoing and one for general
> office use.. That works when the call numbers in/out is relatively balanced
> though.
>
> I know of a local company who're regularly putting 20 concurrent calls over
> the same broadband setup using G729...

Yeah, we use g.729 ourselves too.

Gavin.