Echo and Codec Question

Thread: Echo and Codec Question

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Echo and Codec Question
United States	2008-03-26 09:08:04

Running into echo with a user across the country in California using a 7941 on a cable modem via a VPN. I know this could be expected based on the distance, VPN and lack of QoS. I am using G711, if I used G729 do you think this would improve or make the situation worse? Thanks! Steve ********************************** This email may contain privileged and/or confidential information that is intended solely for the use of the addressee. If you are not the intended recipient or entity, you are strictly prohibited from disclosing, copying, distributing or using any of the information contained in the transmission. If you received this communication in error, please contact the sender immediately and destroy the material in its entirety, whether electronic or hard copy. This communication may contain nonpublic personal information about consumers subject to the restrictions of the Gramm-Leach-Bliley Act and the Sarbanes-Oxley Act. You may not directly or indirectly reuse or disclose such information for any purpose other than to provide the services for which you are receiving the information. There are risks associated with the use of electronic transmission. The sender of this information does not control the method of transmittal or service providers and assumes no duty or obligation for the security, receipt, or third party interception of this transmission. **********************************
Re: Echo and Codec Question
United States	2008-03-27 09:24:06

not likely. echo cancellation is based on reassembled wave form, not packetized packet size. 128 msec of echo coverage is still 128msec whether you encode to 711(high bit rate) or 729 (low bit rate). Find out where the echo is being introduced http://www.cisco.com/en/US/docs/ios/solutions_docs/voip_solutions/EA_ISD.html /Wes STEVEN CASPER wrote: mtb.com" type="cite"> Running into echo with a user across the country in California ;using a 7941 on a cable modem via a VPN. I know this could be expected based on the distance, VPN and lack of QoS. I am using G711, if I used G729 do you think this would improve or make the situation worse? Thanks! Steve ********************************** This email may contain privileged and/or confidential information that is intended solely for the use of the addressee. If you are not the intended recipient or entity, you are strictly prohibited from disclosing, copying, distributing or using any of the information contained in the transmission. If you received this communication in error, please contact the sender immediately and destroy the material in its entirety, whether electronic or hard copy. This communication may contain nonpublic personal information about consumers subject to the restrictions of the Gramm-Leach-Bliley Act and the Sarbanes-Oxley Act. You may not directly or indirectly reuse or disclose such information for any purpose other than to provide the services for which you are receiving the information. There are risks associated with the use of electronic transmission. The sender of this information does not control the method of transmittal or service providers and assumes no duty or obligation for the security, receipt, or third party interception of this transmission. ********************************** _______________________________________________ cisco-voip mailing list puck.nether.net">cisco-voippuck.nether.net https://puck.nether.net/mailman/listinfo/cisco-voip

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