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Issue 37: Set codec priority
20 people starred this issue and may be notified of changes. Back to list
Reported by, Jan 14, 2009
Ability to rearrange codec priority 
Jan 14, 2009
Project Member #1
(No comment was entered for this change.)
Summary: Set codec priority
Status: Accepted
Labels: Component-Logic Component-UI Performance Usability
Feb 5, 2009
Project Member #2
(No comment was entered for this change.)
Owner: eofster
Jun 21, 2009
It would be great if I could select the codecs I preferred to use and remove the others.
Aug 12, 2009
On an ADSL connection with 0.17 Mb/s upload capacity, every caller complains that
they can hardly hear me.

Now I need to call them (back) with Skype.

I wish I could specify a lower bandwidth codec, is there a way (f.e. a config file
that can be edited) to use a lower bandwidth codec?
Aug 12, 2009
g711 need about 87.2 Kbps with every possible overhead scenario so this is 0,087 Mbit/s
Aug 12, 2009
The provider supports:
1. G711U, Ulaw, PCMU
2. G711A, Alaw, PCMA
3. G723
4. GSM
5. G729 
Suggested RTP packet size: 20 milliseconds.

Source (lang=NL):
Aug 12, 2009
Project Member #8
Okay, I'll see what I can do.
Jan 12, 2010
There are many times where i am in a situation where the network bandwidth is not
high enough to handle G711. Ability to switch to GSM will make the experience better.
Feb 22, 2010

I'm nomadic on a sat link which has very rigid limits depending on changing factors.
Ulaw sometimes works, but mostly GSM works better. Unfortunately, knowing Telephone,
using another app is rather painful :-)
Jun 7, 2010
For cases where one would want to use a high-compression codec like GSM temporarily due to a poor network 
connection, I suggest having a global "low-bandwith mode" that could be enabled to switch all accounts to GSM.

Having a way to specify the codec priority on a per-connection basis would still be a valuable feature, so I 
created a separate feature request for a "low-bandwidth mode":
Jun 12, 2010
Project Member #12
 Issue 327  has been merged into this issue.
Jul 10, 2010
I use Telephone on my laptop with a Mobile Broadband Stick (3G Network) for Internet connection.
iLBC would make my conversations very much better, and the Voip Providers I use support iLBC codec.
So I would like to be able to specify iLBC as my preferred codec.
Aug 18, 2010
That would definitely be an awesome feature to have...
Jan 8, 2011
Sep 17, 2011
Codec settings would be awesome. Because of certain cryptic reasons my router (a Fritzbox 7170) has an issue with handling calls from Mac to external lines. If I get called telephone works great, but when I try to call it ends spooky. 
Somehow G.722 codec seems to be involved (if disallowed via e.g. jitsi everythings works - but I would like to stay with telephone.
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