Re: [Linphone-users] Softphones as fax carrier

[Darren Longhorn]

On 24/06/13 12:26, geo cherchetout wrote:
> Le 24/06/2013 11:59, *Darren Longhorn* wrote:
>
>> Getting fax to work over VOIP is very codec sensitive. Use a low speed
>> setting on your fax and a codec like g.711.
>
> Yes, it is what I do, trying Linphone as using Ekiga:
>
> [audio_codec_0]
> mime=PCMA
> rate=8000
> enabled=1
> channels=1
>
> [audio_codec_1]
> mime=PCMU
> rate=8000
> enabled=1
> channels=1
>
> About fax speed, I think every faxes first attempt to establish
> communication at 300 bps and this stage already fails...

Can you control the amount of data per packet? I think default for g.711
over RTP is 20mS? Maybe try 10mS?
--
Darren Longhorn
Red Embedded

This E-mail and any attachments hereto are strictly confidential and intended 
solely for the addressee. If you are not the intended addressee please notify 
the sender by return and delete the message.

You must not disclose, forward or copy this E-mail or attachments to any third 
party without the prior consent of the sender.

Red Embedded Design, Company Number 06688253 Registered in England: The 
Waterfront, Salts Mill Rd, Saltaire, BD17 7EZ