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Forums » VOIP etc » Voice Over IP - VOIP » VOIP Tech Chat » Who uses what Codec?
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The Truth About Universal Service Fund »
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nsumner

join:2001-12-13
Israel


moderated:
October 21st, @12:59PM

reply to wiggles4
Re: Who uses what Codec?

I don't know of any such list but I see no reason we can't make one. I will try to keep this post updated with the information. Right now I can fill in the following.

Vonage: G.711/G.726/G.729
Broadvox Direct: G.711/G.729 + T.38
Packet8: G.729 (G.711 Fax)
AT&T Callvantage: G.711
Broadvoice: G.711
VoicePulse: G.711/G.726-32/G.726-16
Lingo: G729 + T.38
FWD: G711
Voiceline: ?
Iconnecthere: ?
Quantum Voice: G.711/G.729

-----
[Edited by request. --kc]

wiggles4

join:2004-10-09
Eugene, OR

Thanks, nsumner. That actually clears up most of the companies I was unsure about. I thanks to the mods for sticking this. I was a bit disheartened when I saw it fall to the third page after half a day.


sgarrand
Insert Witty Phrase Here
Premium
join:2000-04-13
West Brookfield, MA
·Charter Pipeline
·1and1
·QuantumVoice

reply to nsumner
said by nsumner See Profile:
Quantum Voice: ?
That would be G711u and G729a for QuantumVoice. You can choose and use either in the SPA-2000 config for their service.

Scott
--
Visit »whythehell.com, FWD number 48043, QuantumVoice user with an UNLIMITED residential toll free number for $42, »QuantumVoice.com/rates_800.shtml


adisor19

join:2004-10-11
ok, so where can we find info on wich codec offers the best voice quality ?

Thanks in advance,

Adi


sgarrand
Insert Witty Phrase Here
Premium
join:2000-04-13
West Brookfield, MA
·Charter Pipeline
·1and1
·QuantumVoice

Try this site: »www.voip-info.org/wiki-Codecs

There is a lot of information out there about codecs. This thread also mentions more links: »[Primus] What determins GOOD voice quality?

Scott
--
Visit »whythehell.com, FWD number 48043, QuantumVoice user with an UNLIMITED residential toll free number for $42, »QuantumVoice.com/rates_800.shtml

magm58

join:2000-07-12
East Elmhurst, NY
reply to nsumner
nsumner for you info Broadvoice is using the codec G711u


pcmeet
Official Dta Guru

join:2003-09-15
Montgomery, AL
reply to nsumner
Anyone know what codec sipphone.com uses ? I have the dialup sip phone DUV-1000 uses G.729 and want to see if it will work with sipphone.

lyulyok
Premium
join:2004-04-15
Seattle, WA

reply to nsumner
iConnecthere:

After much experimenting with iConnectHere and Asterisk, I have found out the following:

g711 - US calls, good quality.
g729a/gsm - international, at least to Ukraine. Quality is pretty horrid there. Looking for the VOIP provider that will allow g711 internationally.


dritchie

join:2001-05-07
Euclid, OH

reply to nsumner
Just an FYI -

Vodavi in theirVoIP offerings use
G.711 @ 110kbps for "full" B/W connections and
G.723.1 @ 22kbps when B/W needs to be limited.
G.723.1 can sound almost toll quality when you have some control over QOS.

Do you understand the deference between
G.711u-law and G.711a-law?

mskeven

join:2004-09-08
inida
Do you understand the deference between
G.711u-law and G.711a-law?

---------one is US standard
one is Europe standard


KeysCapt
Premium,Mod
join:2001-07-11
Keys Exile
clubs:
 reply to pcmeet
(topic move) DUV-1000 Experience?

Moderator Action
The post that was here, and all followups to it, were moved to a new topic .. »DUV-1000 Experience?

hoffa3

join:2000-04-18
Las Vegas, NV
reply to dritchie
Re: Who uses what Codec?

Is that Kilobytes per second or kilobits per second? My cable connection can only do about 512kilobit upload.

VoiceWingRep
Premium
join:2005-07-28
reply to nsumner
Verizon VoiceWing has standardized on G.711. G.711a as default and G.711u when the connection allows.
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