There are two key generations of the ECI DTX-240 product: 240E and 240F. The F is the second-generation product which retains all the capabilities of the E system, but has addition features such as high compression ratio for Group 3 Facsimile (FAX) traffic. It also uses a de-modulation/remodulation technique which substantially improves the systems performance.

The ECI DTX-240E and DTX-240F are types of DCME (Digital Circuit Multiplication Equipment).

The DTX-240F systems accepts two hundred and forty 64 kbit/s trunks which carry either voice, voice band non-speech signals or digital data for transmission over a 2.048 Mbit/s or a 1.544 Mbit/s digital link.

The system consists of a pair of terminals, one on each side of the inter-terminal digital link and enables circuit multiplication ratios of up to 6:1 to be maintained regardless of the combination of different traffic types.

Applications

The DCME DTX-240F was intended for operation with IDR and TDMA satellite systems as well as for use in terrestrial and submarine applications.

Speech Quality

The ECI DTX-240F is able to provide “Toll Quality” speech.

Handing

The DTX-240F is capable of handling multiple types of channel information including:

• Up to 240 voice trunk channels for the distributed peak traffic hours
• Over 200 voice trunk channels for non-distributed peak traffic hours
• Up to 180 Group 3 Fax trunk channels
• UP to 57 compressed Voice Band Data (VBD) non-FAX channels
• Up to 28 transparent 64 kbit/s trunk channels as defined Clear Channels

Power Supply

The operating voltage range of the ECI DTX-240F is -36 to -72 VDC and in terms of power consumption, it requires 5.3W in standby mode and 9.6W in operating mode.

Cooling

Natural convection is used as internal cooling for the DTX-240 system. An air separation panel is installed between the two terminals in the cabinet.