- BlackBerry WLAN Solution
RIM (Research In Motion), the creator of BlackBerry, is making models that are part of a wireless LAN solution, working on 802.11 networks (e.g. Wi-Fi). An example is the BlackBerry 7270 handheld, which connects through the BlackBerry Enterprise Server to allow VoIP along with many other applications like email, IM, Internet and intranet etc. It is made to work with IP-PBXs such that it can have the functionality of a desktop phone. It interoperates with the PBX using SIP-based controls. If you want this, you will have to make sure that you buy a model that comes with the above specifications.
This option is device-based, and is made to suit businesses and people aiming at deploying mobile VoIP over wireless LANs. Below are third-party implementations of VoIP on BlackBerry, that are mostly software-based.
- Raketu's BlackBerry VoIP service
This Raketu service allows BlackBerry users to make cheap international calls, as well as sending email and text messages using the same browser-based application from Raketu. There is no need to download any software. Just load the application on your browser and use it. - EQO Mobile
EQO Communications is a developer of mobile applications for VoIP, and it's new application for Skype, EQO Mobile can transform your BlackBerry into a cheap or free calling device. EQO is compatible with all major IM services: MSN, AIM, Yahoo!, Google Talk, QQ, ICQ and Jabber. - WebMessenger Mobile For Skype
This is a free downloadable application that allows you to take Skype along with you on your BlackBerry, along with all its all its features, including the ability to make free and cheap calls. A cheap paid version of the application comes with some added features. - VoIP Softphone Applications
Many interesting voice and video applications can be installed on a BlackBerry and a data plan used to make free VoIP calls. For instance, you can install Yeigo (I just checked compatibility and Yeigo goes on most, if not all BlackBerry machines), GoogleTalk and Yahoo IM.
You can have an idea of different prices of BlackBerry models from different stores here.
