VOIP/ Android app consultant
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I have android app what use voip for calling between registered user. App do not use phone number for contacts, app use usernames stored in database and search function, after finding some user using search you can call him by click on username. On server is installed kamailio for single calls and asterisk for conference calls.
1. App has voice latency 1 - 1.5 sec. and I need decreased latency on 150 - max. 300 milisec. or on the same level as Skype on the same network path.
2. App has problems with call connections. App usually connect first call and after ending this call next call has no connection, sometime has ring and connection ( voice ) but usually no ring, no connection, no voice. Server is Linux, for single calls we use Kamailio and for conference calls we use asterisk.
My developers think that have idea how to fix these problems but anyway, maybe they will need few hours of consulting about mobile voip ( latency, connection ). If you have expert knowledge in this field I will pay you per hour for consulting and advices. We need REALLY EXPERT knowledge and experience for voip/android because developers are very experienced and do not need basic advices. Advantage is your work on similar voip app ( in Google store ).
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