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 1.5 sec. - 2.5 sec. and I need decreased latency on same level as Skype - worker need to be able to bring down the latencies in the milli second range.
2. In app I have also 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. Worker has to fix this problem so app have not any call connections problems.
Fixed price for latency problem fixing is 400$ and for connection problem fixing is 300$ so total price for this work is 700$.
Work have to be finished in 8 days and will be paid after successfuly solving problems.