The analog phones are a common cause of echo. Look for settings on the device to use an echo canceler. On Tue, Dec 6, 2011 at 8:58 PM, Boris Kovalenko <boris@tagnet.ru> wrote:
Hello!
We are not using headsets and speaker phones. Only standard analog phones connected via Linksys or Audiocodes devices. I have tested LG, Nortel, Samsung, Panasonic phones with same result. The problem exists only _inside_ my network. So, for example:
Audiocodes -- FreeSwitch -- Linksys ... echo present (often) Linksys -- FreeSwitch -- Linksys echo present (rarely) Audiocodes / Linksys -- Freeswitch -- Cisco 5350 -- PSTN (echo never present) Audiocodes / Linksys -- FreeSwitch -- remote calling party over internet (echo never present)
Headsets, speaker phones, calling a remote party over high latency.
On Tue, Dec 6, 2011 at 8:49 PM, Boris Kovalenko <boris@tagnet.ru> wrote:
Hello!
I have tested many phone models with same result. So my VOIP isn't properly functioning? Jeff, may You tell me what should I double check to eliminate echo?
Its not possible to have echo in a pure VOIP (properly functioning) implementation. The only source of echo would be from acoustic echo on your phones which is most likely what you are experiencing. A Jitter buffer wont help this problem.
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_________________________________________________________________________
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-- Regards, Boris
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
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_________________________________________________________________________ Professional FreeSWITCH Consulting Services:consulting@freeswitch.orghttp://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Serverhttp://www.cudatel.com
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FreeSWITCH-users mailing listFreeSWITCH-users@lists.freeswitch.orghttp://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-usershttp://www.frees...
-- Regards, Boris
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
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-- Anthony Minessale II FreeSWITCH http://www.freeswitch.org/ ClueCon http://www.cluecon.com/ Twitter: http://twitter.com/FreeSWITCH_wire AIM: anthm MSN:anthony_minessale@hotmail.com GTALK/JABBER/PAYPAL:anthony.minessale@gmail.com IRC: irc.freenode.net #freeswitch FreeSWITCH Developer Conference sip:888@conference.freeswitch.org googletalk:conf+888@conference.freeswitch.org pstn:+19193869900