Käynnissä

Android VOIP application - problems establishing a voice(RTP) connection

I have an Android VOIP application which has problems establishing a voice(RTP) connection. The application actually has two voice connection implementations: a custom one based on Sipdroid and an implementation made using built-in Android RTP API ([url removed, login to view]). And you only need to fix ONE of these.

The first(Sipdroid based) implementation doesn't work reliably - from some reason it occasionally fails to transfer voice (RTP) data between the caller and callee. Plus it rarely succeeds in establishing a connection between the caller and calle if one of them is using a Samsung phone. It appears that UDP hole punching doesn't work very well on Samsung phones. The second ([url removed, login to view]) implementation works almost perfectly. Its sole problem is that it has a terrible 2 - 4 seconds latency. I.e. it takes between 2 and 4 seconds for caller to hear what the calle said and vice versa.

So, long story short I need someone familiar with RTP protocol, Android networking and perhaps VOIP in general to either fix the current code or create a new RTP layer from scratch. If you have ever created a VOIP Android app that uses RTP protocol to transfer voice data you should be capable to fix this. Note that your job on this project is just to take care of RTP related code, everything else is in place and working.

If you don't have experience with this kind of applications don't bother bidding.

Taidot: Android, Asterisk PBX, C-ohjelmointi, Java, VoIP

Näytä lisää: android voice rtp, rtp android voip, rtp voice applications, android rtp api, android voip rtp, android rtp, short story job, scratch programming android, scratch programming, samsung android phones, samsung android, programming scratch, programming phones, programming android phones, new android phones, java programming problems, programming problems, care connection, android samsung, android phones 2013, android 6, 22 problems, data punching work, voip rtp, voip api

About the Employer:
( 21 reviews ) Zagreb, Croatia

Projektin tunnus: #4300724

Myönnetty käyttäjälle:

digitalhorizuk10

Hi Vladimir, As discussed I have bid on your project. Please award it so that we can get started.

800 $ USD 8 päivässä
(0 arvostelua)
0.0

10 freelanceria on tarjonnut keskimäärin 1040 $ tähän työhön

abusayed2004

We can do it...

700 $ USD 3 päivässä
(13 arvostelua)
4.4
dinesh16

I have experience of working on VOIP application based on XMPP(communication protocol) and RTP (data exchange). Please check your PMB for more details.

700 $ USD 15 päivässä
(1 arvostelu)
3.6
webprogs

Hello, I can fix it, pls .contact me for details.

700 $ USD 15 päivässä
(1 arvostelu)
3.2
sincosten

Respected Client, Please check PMB for listing and confident to complete the project with quality services.. Best Regards

750 $ USD 15 päivässä
(2 arvostelua)
1.9
mobiappdeveloper

Dear sir, We introduce ourselves as an IT company working almost in all technologies based on web and mobile devices. I have attached the work in PM that is relevant to your project. Please see to it and reply. Lisää

1550 $ USD 20 päivässä
(3 arvostelua)
1.4
mobilesoftphone

We already developed VoIP App for Android. Pls look in your PMB

1000 $ USD 5 päivässä
(0 arvostelua)
0.0
tailong1

Dear Mr servlet4me! I'm interesting in your job. I have much experience. I can do this job.

650 $ USD 5 päivässä
(0 arvostelua)
0.0
baonvdev

Please see PMB

2500 $ USD 30 päivässä
(0 arvostelua)
0.0
sami200pk

Dear , Please contact me to get this work done. I am working as a Voip engineer. I have experience in setting up such projects in past. I will do it at very afordable price. Please contact me Thanks

250 $ USD 7 päivässä
(0 arvostelua)
0.0
ievatech

Hello, we can give you better android app for audio/video call with code in this quote..it work on all platform. Regards ieva technologies

1800 $ USD 7 päivässä
(0 arvostelua)
0.0