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Re: [Linphone-developers] Linphone on BlackBerry announce

From: Jehan Monnier
Subject: Re: [Linphone-developers] Linphone on BlackBerry announce
Date: Wed, 12 Jan 2011 18:48:48 +0100

Hi Dan,

Le 12 janv. 2011 à 14:05, Kosek Dan a écrit :


This is great news.  

Does this work with both GSM and CDMA versions of Blackberry handsets?
Well, we have tested on a GSM device. But I guess most of recents BB devices support both CDMA and GSM. We know this version works pretty well on Bold series but not on  Storm 2 9550  :-(

Also, how hard is it to add other codec's (GSM, iLBC or Speex), as most IPPBXs don't support AMR?
As BB applications are pure java, it is nearly impossible to encode/decode voice at the application level. For audio encoding, we rely on what RIM provides. So far only AMR-NB is available in realtime. Today, we think the best is use  "server based" transcoding. We are thinking about providing a server with transcoding capabilities. 
Best regards,


Dan Kosek: VoicePlex - Traveler™ - Reach™
Contact Info: address@hidden - 240.345.9000

On Jan 11, 2011, at 11:19 AM, Jehan Monnier wrote:


The Linphone's team is pleased to release a new port of Linphone on Blackberry !

Main features are:
-Audio only based on built-in AMR-NB codec.
-Native contact list integration.
-Call history.
-Both sip tcp and udp.
-Limited supported device, Bold series with OS > 5.0 .
-Both wifi and 3G support.
-GNU GPL v2 license.

Linphone for BlackBerry OS is a completely java rewritten  Linphone leveraging on the java version of libblinphone API we have developed for Android. Simon has developed a java port of oRTP called jortp with adaptive jitter buffer. For sip, we have leveraged on sip-for-me, that we had to patch to fix a bunch of bugs. The core (I.E jliblinphone) is a strict implementation of the java version of linphonecore.

Linphone on BB only support AMR-NB because on BB 0S 5, it's the only available codecs with real time capabilities. So you have to find a sip provider supporting this codec.
Due to the lake of DNS api from BB OS5, sip hosts must always be entered as an IP address (I.E sip:address@hidden). Same for the proxy field in  configuration view witch must be an ip address. 

Binary installation is available from:  
Just open this URL from your BB web browser.

As usual, source code can be found at:

Contributions and feedback are as always welcome, use the mailing lists for that purpose.


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