Starting point for a VOIP communicator

Posted on 2011-04-28
Last Modified: 2012-05-11
Hello, everyone!

 I am in the community recently and I have some questions for study and work I need the initial support for the best path to follow, the desaio is to build a VOIP communication software for Windows Mobile 6.1. Seeing some of the specialty believe that I will need the support of three great professionals, they are:

IP Telephony feptias Guru

jfrady Voice Over IP Master

emoreau. NET Programming Genius

How do I contact?

But of course that all support is welcome.

Big hug to everyone and hope to soon be contributing to the community.
Question by:marcushoyer
    LVL 39

    Accepted Solution

    first familiaarize yourself with protocols involved.
    h323, SIP, Skinny etc.
    Asterisk is an opensource tool that supports a lot of this and might be a good point to start study-ing. (Other servers are available)
    there are a lot of opensour clients available with this. See for more entry points to start out.

    Author Closing Comment

    We have managed to migrate some software for mobile destk but all have problems with sound quality that has not been possible to identify whether it is a network issue with UDP packet loss or low quality CODEC. Researching solutions that use Direct Sound and mobile as this class has not had to be adapted to other audio technology any tips on how to solve.

    Author Comment

    I already knew that site if that is the best for the start, I'm on track. Thank you!
    LVL 39

    Expert Comment

    For packetloss you should be able to monitor a link with f.e. wireshark and identify missing packets (if any).
    another (missing sequence numbers in the RTP stream f.e.) (although this is better for TCP)
    (ping with various packetsizes & interval times can help here too

    Or you can syntheticaly load the link with f.e. netio. That does count the packets
    and give a bandwidth estimate.

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