Re: [Linphone-users] AEC, and Debian Stable

[Simon Morlat]

Hi,

Don't worry about the ipv6 warning, it only appears the first time because 
linphone has detected that you have a network interface with an IPv6 address 
(probably a link-local address, which is not very useful actually).
The crash that happens a bit later is because linphone attempts to create the 
video window, which is not possible in pure console mode.
Newer versions (>=1.7.1) don't try to enable video features in linphonec, 
unless you run it with the -V option.
I would suggest, if you can, that you try to upgrade to a more recent version 
to not get into this problem.
Concerning your first question, yes linphone is able to run in console, send 
digits and do echo cancelation, however you know echo-cancelation is a 
difficult artwork, and it might not give good results, depending on the 
latency of your soundcard, the level of microphone and speakers.

Simon

Le Tuesday 04 December 2007 13:27:34 Nikhil Nair, vous avez écrit :
> Hi,
>
> I'm new to Linphone, and have a couple of general questions.  I use
> Debian Linux, and, as I'm totally blind, I use a text-based terminal
> rather than a GUI.
>
> I'm after a tty-based softphone which will do acoustic echo cancellation
> (so I can use speakers and a reasonably powerful microphone, rather than
> headphones etc.), and which is able to send DTMF digits.  It seems that
> the Asterisk console doesn't satisfy these two requirements, much to my
> surprise (perhaps it's more for testing than for serious use); am I right
> in believing that Linphonec does satisfy both?
>
> The current stable release of Debian includes linphone-nox 1.5.1.  I've
> tried to run linphonec from an ssh session, but get a series of errors:
> first I get a warning that my machine seems to be on an IPV6 network
> (actually, it isn't...); strangely, when I tried to capture the output
> with 'linphonec &>/tmp/linphonec.out' this warning disappeared.
>
> I then get a series of errors about certain devices not being found
> (details included below), after which linphonec segfaults.
>
> As far as the devices are concerned, I'm a bit puzzled; I'm using udev,
> which is standard on Debian, but I didn't want it to do any video
> anyway...
>
> Details of errors:
>
>
>         ---------------------- DirectFB v0.9.25 ---------------------
>               (c) 2000-2002  convergence integrated media GmbH
>               (c) 2002-2004  convergence GmbH
>          -----------------------------------------------------------
>
> (*) DirectFB/Core: Single Application Core. (2006-12-04 07:38)
> (*) Direct/Memcpy: Using SSE optimized memcpy()
> (!) Direct/Util: opening '/dev/fb0' and '/dev/fb/0' failed
>      --> No such file or directory
> (!) DirectFB/FBDev: Error opening framebuffer device!
> (!) DirectFB/FBDev: Use 'fbdev' option or set FRAMEBUFFER environment
> variable. (!) DirectFB/Core: Could not initialize 'system' core!
>      --> Initialization error!
> ortp-error-Couldn't initialize SDL: DirectFBCreate: Initialization error!
> ortp-error-MSV4l: cannot open video device (/dev/video0): No such file or
> directory.
>
> Any suggestions much appreciated!
>
> Best wishes,
>
> Nikhil.
>
>
>
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