sip - FreeSwitch voice delay on Android -


currently, building mvoip service android. chose freeswitch sip server, , there no problem talking through pc. however, android open source make voice delay. here data faced far.

case 1 - freeswitch + pc

freeswitch 1.2 stable version linux centos 6.5 xlite softphone pc windows8  voice delay - less 50ms 

case 2 - freeswitch + android sipdroid

freeswitch 1.2 stable version linux centos 6.5 sipdroid android  voice delay - 80 ~ 200 ms 

case 3 - freeswitch + android csipsimple

freeswitch 1.2 stable version linux centos 6.5 csipsimple android voice delay - 150 ~ 400 ms 

case 4 - freeswitch + android sipdroid ==> pc

freeswitch 1.2 stable version linux centos 6.5 sipdroid android xlite softphone pc windows8  voice delay - 50 ~ 100 ms 

some of android mvoip applications, such skype, make less 50ms voice delay. we've tried many sip open sources android, of them make horrible delay. looking open source make less 50ms android. there can solve issue? thank you.

is maybe android device slow encode , decode audio sound?

it's known problem centos 6. need choose different distro (debian works fine me) http://wiki.freeswitch.org/wiki/download_%26_installation_guide#release.28es.29_6_and_later


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