Powertrunk Successfully Tests Project 25 Land Mobile Radio Interoperability Over ISSI

Test proves PowerTrunk25 is interoperable with other vendors’ P25 LMR systems at advanced functionality levels

New York City, NY —March 11, 2010 – PowerTrunk™ Inc. a global leader in Land Mobile Radio (LMR) design, manufacture and implementation successfully completed a multi-vendor interoperability test. The test demonstrates that the PowerTrunk25 land mobile radio system interoperates with other vendors’ P25 equipment at advanced functionality levels while maintaining a high-quality audio connection.

Project 25 Inter-RF Subsystem Interface (P25 ISSI) wireline interoperability was achieved using each manufacturer’s P25 ISSI gateways. An IP connection was established via a virtual private network (VPN) between PowerTrunk’s parent company in Zaragoza, Spain and Motorola offices in Schaumburg, IL. The systems communicated over ISSI interfaces to execute group calls and emergency calls from P25 handhelds in each of the two locations. The connection was easily established with clear and crisp audio quality in both directions. Other vendors participating in the ISSI interoperability test event included: EADS, Etherstack, Harris, Motorola, Raytheon and Tait.

“To ensure interoperability, the PowerTrunk25 LMR system is 100% adherent to P25 standards,” said Jose Martin, COO of PowerTrunk. “The success of the recent ISSI test clearly demonstrates our support of the standards and the system’s reliable interconnectivity with other vendors’ equipment.”

The PowerTrunk25 ISSI implementation is simple and cost effective. The Ethernet IP architecture requires no conversion or transcoding; nor do agencies need to purchase or install the ISSI gateways required by non-100% Ethernet IP networks. For PowerTrunk25 users this represents higher reliability, easier scalability and lower hardware costs.

P25 ISSI enables a superior level of public safety communications by providing a common standardized interface connecting multiple disparate trunked P25 networks at the network layer. Radios and networks from different manufacturers can safely transmit digitally encrypted voice over the ISSI interface. Users will be able to roam beyond their coverage area across unconnected networks without losing connection with their home network and dispatchers – a significant improvement in wireline interoperability. Now dispatchers can monitor and maintain communications with users even while they are roaming.

See a demo of PowerTrunk25 LMR equipment at the IWCE tradeshow in Las Vegas, March 10 – 13, at Booth #2060.

About PowerTrunk Inc. and Teltronic S.A.U.

PowerTrunk Inc. is the subsidiary of Teltronic® S.A.U. responsible for business development, distribution and customer support for Teltronic land mobile radio projects in North America. PowerTrunk is headquartered in New York City.

With 35 years’ experience designing, manufacturing, implementing and supporting digital and analog land mobile radio turnkey projects, Teltronic S.A.U. has more than 300 systems installed in 50 countries. Teltronic’s LMR solutions are widely deployed in the public safety, oil and gas, transportation and utilities industries. LMR equipment includes conventional and trunked infrastructure systems, mobiles, hand portables and dispatching consoles for TETRA, P25, WiMAX, PMR and MPT-1327 technologies.

Headquartered in Spain, Teltronic S.A.U. is one of the fastest-growing TETRA solutions providers today, with a direct commercial presence in over 25 countries throughout Europe, Asia, the Pacific Rim, the Middle East, Latin America and the United States. For more information please visit

Contact: Yvonne Brown
[email protected]

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