The Data Connect MIU PowerPort 28.8


To service the growing need for efficient, reliable data communication in a harsh environment of utility substations and industrial facilities, has developed a 28800bps modem that can operate from various AC/DC power supplies and survive high surge levels and extreme heat and cold. All this without compromising the performance expected from state-of-the-art communication devices.

With the rapid move toward “intelligent” substations, where meters, relay, RTU’s, SCADA systems, etc are able to “talk” to a remote operator, communication devices such as modem are moving off the desktop and into the field, where the conveniences of 115VAC power outlets and climate control are usually hard to find.

Data Connect Enterprise has addressed this problem by developing the MIU PowerPort28.8 series modem designed specifically for harsh environments.

The MIU PowerPort28.8 series modem is highly sophisticated full duplex, V.34 data modem that is designed to interface with RS232, RS485 (external device), 5V logic (TTL) or simple send and receive signals. The MIU PowerPort28.8 series modem operates on a 2-wire Dial system.

The MIU PowerPort28.8 series is powered through the RS232 (DB25) data interfaces port or External Jack. An optional 7-16VDC version is also available. A low Voltage version (9-36VDC) is also available.  The MIU PowerPort28.8 series modem is designed to work in temperatures from 40°C to 85°C, and is surge protected on both the power and analog lines.

The MIU PowerPort28.8 series modem is bundled in a 5-3/8” x 1-3/8” non-metallic enclosure, suitable for desktop or wall mounting

Also see our Data Sheets on the “Myriad” Rack Mount Modem Banks, MIU202T (Bell), MIU9.6FPD and MIU14.4 and MIU28.8 modems.


  • Modem Interface Units AC/DC Powered
  • Substation hardened communication interface Units
  • 28.8kbps 2-wire Dial modem
  • Powered through the RS232 (DB25) data interface port or External Jack. (Optional 7-16VDC available)
  • Automatic “Power Down” when inactive
  • IEC801-4 Surge Protection
  • -40°C to +85°C operating temperature
  • Hayes AT Compatible
  • For Meters, Relay SCADA etc.


Modem Line Speeds:
Asynchronous 28800, 14400, 9600, 4800, 2400, 1200, 300bps

DTE Rates:
Above modem line speed (IE; with data compression) 115.2, 57.6, 38.4, 19.2kbps

V.34, V32bis, V.32, V.22bis, V.22, Bell 212A, Bell 103

Transmission Line:
2-Wire Dial

Hayes Extended AT Command Set

Powered through the RS232 (DB25) data interface port or External Jack. (Optional 7-16VDC available)

Case Size:
5-3/8” x 4” x 1-3/8”

Digital Port:
RS232 with DB Connector

Analog Port:
RJ11 Modular Jack

Surge Protection:
(Powered Line) 8kV [Exceeds IEC801-4] (20kV {IE801-5} available if required)

Surge Protection:

-40°C to +85°C, 0 to 95% humidity (non-condensing)

FCC Part 68, Industry

Ordering Information

DCE/MIUPP28.8                        V.34 28.8Kbps Standalone 2-Wire Dial Power thru RS232 or 7-16VDC