Hi Everyone I would like to start a discussion on VoIP and Ubuntu Touch Phones.
I have been in the VOIP industry for many many years, and there is always common problems with VoIP most of which can be other come one way or another. But when it comes to mobile devices we have a few more thing to take into consideration and this can only be done from the Operating System rather than a applications. So I would like to contribute some ideas and start a discussion about VoIPs future on the Ubuntu Touch platform. Quality Today we have more and more bandwidth available so its not an issue its really a question of priority. Just like when you make or receive a call, your GMS has priority over your speaker. When you make or receive a VoIP call your call should have priority over your data, simple things can be done to allow this to happen through API to suspend other applications data for example downloads, there is no point in downloading updates when your on the phone call, or downloading emails. This could be the greatest benefit. Native VOIP over VOIP Application I will say here, Native VOIP is always the way to go, it can have more integration with Operating System, it could be accessed by many applications and the benefits of things being open source the collective efforts can be focused on making the perfect VoIP experience, rather than lots of apps not quite making the mark, because they don't have the integration with the OS needed to provide quality. Echo Cancellation This is a must have to be build into any VoIP Client, Android also have a Native VoIP Client (Great Idea) but still today no Echo Cancellation even after so many years. (I wonder if GSM companies have any influence over this) NAT (Network Address Translation) One of the biggest problems we have today and foreseeable future is Network Address Translation this has come along way over the years and VOIP networks have become better at handling the issues, but making sure the VOIP Client has STUN/ICE support will allow calls work in most network topologies. Codec Support This part i know this is a more of a complicated issue, as there is a world of difference licenses, there are now open source version, codecs are so important to help reduce quality issues, the smaller your packets the easier they are going to reach there destination uninterrupted. Two of the most commonly used these days are g729 and g722, with g729 using a little as 9K and g722 using 14K but give providing wider bandwidth sound give us HD quality. Thanks for your time
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