Department of
Defense Joint Tactical Radio System (JTRS).
"Interoperability is vital for the successful adoption of push to
talk in the market", says Clemens Joos, President Mobile Devices,
Siemens Communications.

interoperability consensus

ca.

About Objective Interface

Objective Interface is a worldwide leader of embedded and
real-time middleware solutions.

Read more at http:/ /www.

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PRESS RELEASE Objective Interface Middleware Solution Selected by CRC Leader in Communications R+amp;D for High-Performance Software-Defined Radio Platform

"Handset diversity is important for service adoption and we
are very pleased to see a new line of handsets having finalized
testing with our push to talk solution".
The CL75, CX75, CF75, M75, and SXG75 that were presented during CeBIT
2005 will also have push to talk incorporated. It complies
with the existing Push to talk over Cellular, (PoC) specifications to
ensure interoperability and will comply with OMA PoC specifications
when available.

ieee ericsson

"By incorporating Objective
Interface's ORBexpress with CRC's Software Communications Architecture
(SCA) implementation, we have been able to further expand our product
offerings to the world of embedded systems. The company provides Common Object Request
Broker Architecture (CORBA ), data distribution system (DDS) and secure
communications middleware development tools to meet the high-performance
requirements of telecommunications, data communications, industrial
automation , consumer electronics, military and aerospace markets.
"One of the core strengths with an IMS solution for standard-based
push to talk is its ability to enable compatibility between a range of
devices delivered from different vendors", says Bjorn Olsson,
Executive Vice President and General Manager , Business Unit Systems at
Ericsson. Providing
innovative solutions in more than 140 countries , Ericsson is helping
to create the most powerful communication companies in the world.

whilst ericsson

It is based on the Software Communications Architecture
(SCA), a foundational technology that uses
real-time CORBA as the framework that enables wireless communications
equipment to dynamically learn new communications waveforms."
Push to talk calls are one-way communication; while one person
speaks, the other(s ) listen.ericsson.

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"

"CRC's selection of ORBexpress for its new software communications
architecture validates the ways in which ease-of-use, ultra-fast
performance and low overhead are combined in our ORB-based middleware
solutions," stated Bill Beckwith, CEO, Objective Interface Systems, Inc .

mbps compinfo

"This partnership is an important step in providing greater flexibility of
choice to the industry," said Claude Blisle, Research Manager, Advanced
Radio Systems, Communications Research Centre. The service
will run over standard GPRS networks where operator supports this
functionality .

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Recognizing the need for interoperability between radios based on different
hardware platforms or operating at different frequencies, Communications
Research Centre (CRC), Canada's leading research and development (R&D)
laboratory for advanced telecommunications, has chosen Objective
Interface 's high-performance middleware solution, ORBexpress, to create
a commercially available software-defined radio (SDR) platform that enables
interoperability through software modifications, not hardware changes . R&D is used for public policy purposes and to
strengthen the Canadian economy through technology and knowledge transfer.

ORBexpress is a trademark of Objective Interface Systems.

Ericsson and Siemens Reach Interoperability in Push to Talk

Business Editors/Technology Editors

STOCKHOLM , Sweden----Ericsson
(NASDAQ:ERICY) and Siemens Communications have successfully completed
interoperability tests between Siemens push to talk handsets and
Ericsson infrastructure (IMS system including push to talk server).

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1394 gcatt

Under its four research branches (Terrestrial Wireless, Satellite
Communications and Radio Propagation Research, Broadband Network
Technologies and Broadcast Technology), CRC specializes in taking an
interdisciplinary approach to longer-term R&D in wireless systems, radio
fundamentals , communication networks, photonics and interactive multimedia.

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This major step will significantly expand the customer base for
operators planning to offer standard-based push to talk and will give
consumers a simple and seamless push to talk experience.

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In nearly all handsets starting
from the C class a client for push to talk will be integrated showing
our commitment to this new form of communication.

Non-Vendor Organizations that are predominately focussed on issues surrounding Data Communications - from the physical layer through to the application layer.

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In addition
it proves the two global mobile communications suppliers' commitment
to open standards.

gcatt imtc

"We are pleased to be part of a solution that facilitates the development
of the software-defined radio through a commercially available,
off-the-shelf software package. Ericsson's IMS system also supports other fixed and
mobile services such as Combinational Services (talking and sharing
various media at the same time), IP Centrex etc.

whilst ieee

For more information, visit: www.crc. "That is why all push to talk capable mobile
phones from Siemens guarantee access to IMS networks and are equipped
with an open industry-standard.com/press

About Ericsson push to talk infrastructure

Ericsson's push to talk solution Ericsson Instant Talk is based on
IMS in a very cost-efficient and scalable implementation . Ericsson conducts
interoperability testing of push to talk/IMS handsets through its
Multi Vendor Terminal Verification program that is open for any
vendor.

ericsson consensus

With radio often providing the only means of
communication in a high-risk environment, such as a military engagement or
humanitarian rescue operation, ensuring interoperability among different
types of field-based radios or communications systems is mission-critical. For more information, visit
info@ois.

deploy consensus

com.

osgi teleconferencing

0 of the Software Communications
Architecture (SCA) specifications published by the U.S.
Recent testing between Ericsson infrastructure and Siemens mobile
devices were carried out with two currently offered push to talk
enabled devices, the CX70 and C70 which are commercially available.
Ericsson is shaping the future of Mobile and Broadband Internet
communications through its continuous technology leadership .

teleconferencing promising

About the Communications Research Centre Canada (CRC)

CRC is the Canadian government 's primary laboratory for R&D in advanced
telecommunications.
Objective Interface products, sold worldwide, are used in a variety of
real-time and embedded applications, including communication systems,
network management, vehicle control systems, telecommunication systems and
nuclear fusion ignition facilities.

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"

CRC's SCARI Software Suite and the SCA

CRC's SCARI Software Suite provides a complete software solution for
implementing SDR. The SCARI
Software Suite is based on version 3.

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In 2005 more than 10 handsets from
Siemens will support push to talk. The right to speak is granted by pressing
a push to talk key on a first come-first served basis.

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All other
product and company names are trademarks or registered trademarks of their
respective holders.

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We look forward to supporting CRC as they
fulfill the demands for this package among their military and commercial
customers.