Tim Panton wrote:
Well, with 16 phones, it might be worth putting a
'satellite' asterisk in their office, have it handle local
transfers, and act as a protocol converter, talking sip to the
phones and (trunked) IAX2 to the outside world.
An embedded low power system would do fine.
You might
On 17 Jun 2006, at 07:53, Kristian Kielhofner wrote:
Tim Panton wrote:
Well, with 16 phones, it might be worth putting a
'satellite' asterisk in their office, have it handle local
transfers, and act as a protocol converter, talking sip to the
phones and (trunked) IAX2 to the outside world.
An
On Sat, Jun 17, 2006 at 11:14:33AM +0100, Tim Panton wrote:
On 17 Jun 2006, at 07:53, Kristian Kielhofner wrote:
Tim Panton wrote:
Well, with 16 phones, it might be worth putting a
'satellite' asterisk in their office, have it handle local
transfers, and act as a protocol converter,
G729 uses 8kbps but with the IP overhead it actually uses 30kbps so for
256k upstream you should be able to handle 8 calls but this is in ideal
conditions.
If you were to use IAX and enable trunking then you would use 30kbps for
the 1st call and 10kbps for each additional call.
See
Wow! 22Kbps of overhead? Are you sure? That sounds like way too much
overhead. I can't use IAX2 because the GXP-2000 are SIP phones :( Any
other suggestion?
Thanks,
Daniel
On Jun 14, 2006, at 4:37 AM, Gareth Blades wrote:
G729 uses 8kbps but with the IP overhead it actually uses 30kbps so
Welcome to the wonderful world of VoIP, where people are eager to move
from 8kbps G.729 to 6.3kbps G.723.1, and accept a substantial drop in
voice quality, and then throw over 20kbps of RTP, IP and related
overhead on top of them. Isn't IP wonderful? :-)
Regards,
Steve
Daniel Salama wrote:
Well, with 16 phones, it might be worth putting a
'satellite' asterisk in their office, have it handle local
transfers, and act as a protocol converter, talking sip to the
phones and (trunked) IAX2 to the outside world.
An embedded low power system would do fine.
You might even get away with an
That may not be such a bad idea. I've read people trying to put
Asterisk on a WRTG54 or something like that. Would that be good? I
guess I could do SIP in the office and trunk via IAX2 and save on
bandwidth plus internal calls would be local.
I tried to upgrade them to 512K but because
I have a client with about 16 GXP-2000. They complain that the audio
quality is terrible after 2 or 3 simultaneous conversations. They are
behind DSL 1.5Mbps down and 256Kbps up. Because they are using G711.u
codec, I know they upstream bandwidth is the limiting factor and they
most likely
