markhph
join:2001-03-24
| reply to Automate
Re: [Broadvox Direct] Broadvox and BroadVoice join the VoIP Fray
BroadVoice uses the higher quality G711 codec. I use BroadVoice and have measured EXACT bandwidth requirements for a single call, and a conference call. Outcome? Each call uses exactly 74Kbps. So if you are making a single call, you need 74Kbps upload speed. 148Kbps upload speed on a conference call. I also use the internet during these calls without any effect on the VOIP call. I have a cable modem connection of 3Mbps Down, 256Kbps up.
I can tell you these calls are excellent quality. Conference calls sound just as good as single calls. No delays, no echos, no breakups. Me and my freind, both who use BroadVoice at our respective homes, made a VOIP to VOIP call to each other. Then each one of us independently added another party to each of our calls with conferencing. When done, we have four of us on the line. The two parties we both added said they couldn't tell the difference if they'd called each other direct! And these two extra conferencees were both located 2000 miles from each of us.
Call setup -> VOIP1 (me) calls VOIP 2 (friend). VOIP 1 (me) makes conference call to PSTN destination. VOIP 2 (freind) makes conference call to another PSTN destination. We're all conferenced together.
When both of us VOIP users were done, we hung up. 3rd and 4th parties 2000 miles away were now transferred to each other. Now that's a superb network. Go BroadVoice! |
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PhoneBoy
I Am
join:2002-01-02
Gig Harbor, WA
| Re: [Broadvox Direct] Broadvox and BroadVoice join
said by markhph  :
BroadVoice uses the higher quality G711 codec. I use BroadVoice and have measured EXACT bandwidth requirements for a single call, and a conference call. Outcome? Each call uses exactly 74Kbps.
Does your measurement include IP and UDP overhead?
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The views expressed herein are not necessarily those of anyone else, including the poster. |
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Neutron1998
join:2004-03-25
Princeton, TX | reply to markhph
Re: [Broadvox Direct] Broadvox and BroadVoice join the VoIP Fray
Packet8 is G723.1 right? Isn't that 17kbps. Wouldn't this standard be better? |
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PhoneBoy
I Am
join:2002-01-02
Gig Harbor, WA
| Re: [Broadvox Direct] Broadvox and BroadVoice join
It is better from a bandwidth standpoint, but not from an audio quality standpoint. To a lot of people, G.723.1 doesn't sound that great. G.729 sounds a bit better and, at least to me, barely distinguishable from G.711.
-- PhonedBoy
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The views expressed herein are not necessarily those of anyone else, including the poster. |
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markhph
join:2001-03-24 | reply to PhoneBoy
Yes. |
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