DGI Technologies Launches Its Newest Product for Wireless Integrated Trunk Interface and Echo Cancellation.

RICHARDSON, Texas--(BUSINESS WIRE)--Oct. 12, 1998--

DTI-3000 E Provides Customers the Latest Technology for Upgrades

that Significantly Improves Call Quality and Reduces Cost

DGI Technologies Inc, a premiere supplier of wireless and cellular switching products, announced today the availability of its newest product for EMX-2500 cellular switching systems.

The DTI-3000 E product is an integrated trunk interface card that combines trunk interface and echo cancellation functions onto one card. With this new technology, the inherent problems of echo caused by delay can be resolved. The DTI-3000 E trunk interface card gives cellular and wireless companies the option to upgrade their EMX-2500 switching systems, originally provided by Motorola, to the latest technology at a substantially reduced cost. The DTI-3000 E product is nearly half the price of competing products.

"We are pleased we can provide customers with a superior product that cancels problematic echo and at the same time saves them money," states Lyle Coffman, President and COO of DGI. "The DTI-3000 E is truly a customer driven product."

The echo cancellation function meets or exceeds the requirements of ITU-T G.168 specifications and the Acoustic Coupling Control feature eliminates the acoustic background noise of wireless handsets and speakerphones. In this product, hybrid cancellation and acoustic coupling control are provided with one echo canceller.

Call quality is greatly improved with the DTI-3000 E trunk interface card. The inherent hybrid echo from the wire-line side is eliminated. In addition, acoustic coupling control eliminates acoustic and background noise generated by the wireless handset. The key features of echo cancellation include fast convergence, robust double talk performance, continuous circuit monitoring of signal levels and echo statistics, dynamic comfort noise, self-test diagnostics and selectable maximum tail path delay up to 128 milliseconds. The DTI-3000 E is available with a variety of configuration options to support various echo cancellation applications including individual channel bypassing to provide a clear channel path for nailed-up data connections.

This universal card is pin compatible to Motorola's DTI-2 and DGI's DTI-2000 Digital Truck Interface cards and provides trunk interface functions equivalent to those cards. The DTI-3000 E also provides special features for Code Division Multiple Access (CDMA) applications and other data requirements.

"With the DTI-3000 E card's complete built-in echo cancellation functionality there is no need for cabling. It is a simple 'plug and play' installation," states Coffman. "This allows customers to upgrade their current systems, at a fraction of the cost of existing equipment, while eliminating many problems. As a result, DGI customers will be in a much better position to increase their customer base and succeed in their respective competitive wireless markets."

The DTI-3000 E card offers complete forward and backward compatibility for use in Motorola standard DTF shelves and frames, as well as all DGI shelves and frames. This compatibility, in tandem with the additional features, will allow the DTI-3000 E interface card to prolong the life of customers' existing equipment. The DTI-3000 E significantly lowers operating costs and expenses by reducing power consumption and heat dissipation. Additionally, valuable floor space required by stand-alone echo cancellers is not needed, thus adding to customers' savings.

The DTI-3000 E card is based on DGI's field-proven DTI-2000 card which will continue to be offered for applications not requiring echo cancellation. The new product provides two standard T1 interfaces, AMI and B7S line codes, as well as Superframe (SF) capability, which is compatible with existing equipment. It additionally provides B8ZS line code and the ability to select 56 kb/s or 64 kb/s clear channel modes and Extended Superframe (ESF) capability. The DTI-3000 E is a direct replacement and enhancement for Motorola's DTI-2 and DGI's DTI-2000 cards.

DGI Technologies is offering the DTI-3000 E at the special introductory price of $3,920 per card, regardless of volume. This price represents a 35% discount from DGI's list price and is nearly half the cost of stand alone echo cancellers. For example, in the above price echo cancellation is included at $1,000 per T-1 span or $2,000 per DTI card. Greater discounts are also available based on annual purchase volume.

About DGI Technologies:

DGI Technologies, Inc. develops and sells new digital interface cards, shelves and frames for replacement, expansion and upgrade to long-distance and cellular telephone companies that utilize DEX and EMX switching systems provided by DSC Communications Corp and Motorola Inc. Before DGI entered the marketplace in 1991, the original equipment manufacturers were the sole suppliers of after-market products for telephone switches. This forced customers to rely on one source for replacement parts and upgrades. Customers then had to buy expensive new switches to receive product enhancements incorporating the newest technology. With DGI products, users can update their switching systems without replacing them, saving money and significantly extending the life of their equipment. Further information is available on the World Wide Web at http://www.dgi-tech.com.