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How much bandwith does a voip call need to transport it over a VPN

I have got a softphone running over a VPN network. Does anybode now the theoretical bandwith a call takes at the G711 codec and the G729 codec?

The properties of the VPN connection:

-transparrant tunneling with alow IPSEC over UDP (NAT/PAT)

Thanks in advance !

3 REPLIES

Re: How much bandwith does a voip call need to transport it over

Since there has been no response to your post, it appears to be either too complex or too rare an issue for other forum members to assist you, or there is no public information available at this time. If you don't get a suitable response to your post, you may wish to review our resources online at http://www.cisco.com/go/solutions. You may also contact our product information line at 1-800-553-NETS or a Cisco Systems Engineer at your local Cisco office or reseller. To locate your local Cisco representative, visit http://www.cisco.com/warp/public/687/Directory.shtml

If anyone else in the forum has some advice, please reply to this thread.

Thank you for posting.

Re: How much bandwith does a voip call need to transport it over

You can e-mail me at tdennis@catalysttech.com if you haven't gotten a response to this.

New Member

Re: How much bandwith does a voip call need to transport it over

If I remember correctly, a G711 call over an IPSEC tunnel is about 112kbps, while a G729 call is about 54kbps.

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