As unified communications expands to include mobile phones, applications for SIP are much needed. The open source Android platform recognizes this need and the SIPdroid app is a functional solution for those who need to include mobile access in their overall data network.

SIPdroid app features include:

  • Multitasking ability. Unlike the iPhone, which prohibits apps from running in the background, SIPdroid can run continuously, ensuring you never miss a business call.
  • Open source application (in beta version), which allows developers access to improve the application.
  • Java based SIP stack. It allows easy encryption and transmission of SIP calls.
  • Virtual PBX compatibility; configurable in some cases to specific systems.
  • Possibility to add multiple SIP accounts through different operators.
  • Auto switch to speakerphone in car/desk dock.
  • G.722 HD voice for clear audio; compatible with most phones.
  • Optional username configuration without migration from caller ID
  • Caller ID, call waiting notification, video reception and streaming
  • Options for WiFi, 3G or direct calls, with settings to support the choice at all times.
  • Call recording options available in most cases.
  • Call via PBX if SIP is not available.

The SIPdroid app is constantly being updated and features added, and it is possible that it will surpass the iPhone app in terms of ease of use and compatibility with a wider range of networks. Apple has a history of not playing nice with others, and the Android platform glosses over many issues users have with Apple-based systems; for example, iPhone imposes a workaround in the form of ‘Push Notification’ to alert users to open mobile VoIP apps to receive a call, while Android allows multitasking and background apps to run simultaneously, allowing instant access at any time. However, the beta version of SIPdroid still has a long way to go before it fully supports many other features that VoIP users have come to expect.

SIPdroid runs on most HTC Android phones, as long as the ‘Cupcake’ version of Android or newer is installed.

The main benefit of mobile applications that allow SIP calls is that calls are routed through the user’s VoIP network, whether it is their own personal VoIP service or their business VoIP service. Not only can this significantly reduce high mobile operator and roaming charges, but it will also allow full integration of your mobile phone number with your company’s VoIP/PBX system, which means your mobile phone becomes on an extension of your desk phone. An added bonus is the ability to configure settings so that outgoing calls made from your mobile phone display your business caller ID so your business contacts don’t get your private number.

The SIPdroid app is free open source software and can be downloaded from Google.