Unified Communications Featured Article
August 19, 2009
Windows Mobile Gets UC Boost
If everything else were equal, then smartphones running the Windows Mobile operating system would be the logical choice for the business sector. Microsoft (News - Alert) is driving desktop UC so why implement mobile UC on a different OS? One reason is (was) the way Windows Mobile handles FMC.
When the phone transitions from cellular to Wi-Fi, the audio signal goes to the loudspeaker. Good for gaming, but not for business professionals. Another reason is the consistent user experience.
Samsung, in partnership with DiVitas (News - Alert), has developed an audio routing API that circumvents this issue and also adds functionality that enhances the UC experience.
When the phone transitions from cellular to Wi-Fi, the audio signal goes to the loudspeaker. Good for gaming, but not for business professionals. Another reason is the consistent user experience.
Samsung, in partnership with DiVitas (News - Alert), has developed an audio routing API that circumvents this issue and also adds functionality that enhances the UC experience.
This solution is currently available on Samsung’s (News - Alert) Epix, Saga, Jack, and the Omnia (CDMA and GSM) in the U.S. and the Samsung Omnia (GSM) globally.
DiVitas, as a joint developer, is the first FMC/UC vendor to leverage the API.
Samsung’s Martin Tannerfors said, "We asked DiVitas to join as a core member of the Samsung Mobile Innovator program because of their expertise in the field of Mobile Unified Communications (News - Alert).”

Samsung’s Martin Tannerfors said, "We asked DiVitas to join as a core member of the Samsung Mobile Innovator program because of their expertise in the field of Mobile Unified Communications (News - Alert).”

DiVitas Client software running on the Jack smartphone. The API is bundled in Samsung’s Mobile Innovator’s SDK version 1.2.0.
FMC issues
The IP protocol, which was designed for data and Wi-Fi LANs, is really a set of wireless extensions that were designed to transport data. Thus, the quality of VoIP calls made over Wi-Fi is problematic, and while there are solutions that hand calls over to the cellular network when it deteriorates, call quality over cellular networks isn’t that great. We’ve come to accept this, but part of the Mobile UC proposition is based on mobile devices used as an extension to an individual’s desk phone, which means that voice quality should be equivalent. The same is true for voice over WLAN.
The DiVitas Client incorporates a mobility manager that constantly monitors the viability of the active network link and collaborates with the DiVitas Server on network roam decisions. The server incorporates a mobility management service to monitor network connections with the clients and it proactively identifies the optimal network connection for each call. The voice quality engine monitors the audio stream and makes decisions based on jitter, error rates and out of sequence order.
The DiVitas Client incorporates a mobility manager that constantly monitors the viability of the active network link and collaborates with the DiVitas Server on network roam decisions. The server incorporates a mobility management service to monitor network connections with the clients and it proactively identifies the optimal network connection for each call. The voice quality engine monitors the audio stream and makes decisions based on jitter, error rates and out of sequence order.
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Bob Emmerson is TMC's European Editor. To stay abreast of the latest news affecting the European market, check out Bob's columnist page.
Edited by Stefania Viscusi
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