The Data Connect MDR Modem Chassis

The Data Connect MDR modem chassis is designed to house 18 DCE MD modem cards and 2 DCE MDP power supplies. The DCE MDR modem chassis is hardened industrial grade. 19” wide, 3U height (5.25”), constructed of heavy gauge steel with plating for corrosion resistance. The DCE MD modem cards are comprised of DCE MDMC modem carrier card and a DCE E OEM card. The DCE MD202T (Bell 202T), MD9.6 (propriety), MD2.4 (V.22) , MD14.4 (V.34bis), MD14.4L (V.32bis), and MD28.8 (V.34) operate within the DCE MDR modem chassis are hot swappable. Any mix of the DCE MD modems can utilized simultaneously. Two DCE MDP Power supply cards provide full redundancy and are available for any voltage in the range of 9-150VDC and 9-275VAC. A single DCE MDP power card powers 18 modem cards. A second DCE MDP Power Supply Card, if installed, provide automatic backup in the event of a failure of the primary DCE MDP power supply card.


  • 18 modem slots
  • Dial & leased line modems
  • V.22, 202T, 9.6FPD, V.32bis, V.34
  • Hayes AT compatibility Full array of LEDs
  • Standard 19” x “5.25”
  • AC or DC power from 9 to 300VAC or VDC
  • Dual power supply cards with full redundancy
  • Ideal for SCADA master stations 


EIA Standards:
Compliant with EIA standard EIA-310-C

Modem Interface Connectors (Rear):
Serial RS232: DB25F
Analog Port: RJ11

LEDs (Front):
(Top to bottom)
DTR: Data Terminal Ready
TXD: Transmit Data
RXD: Receive Data
MR: Modem Ready
CD: Carrier Detect
RTS: Request to send
CTS Clear to send
RI: Ring Indicator

Power Requirements:
AC power: 9 to 275VAC-Fused Socket
DC power: 9 to 150VDC – Screw Terminals – 9 to 150VDC

Width: 19”
Depth: 5.25”
Height: 3U

Operating Temperature: -20°C to +85°C

 Ordering Information

DCE/MDR                                 Rack mount chassis & AC power backplane assembly (18 slots)
DCE/MDP-00                            DC Power Supply Card with front plate, 19-36VDC
DCE/MDP-01                            DC Power Supply Card with front plate, 38-56VDC
DCE/MDP-02                            DC Power Supply Card with front plate, 90-140 VAC, 50/60-Hz
DCE/MDP-03                            DC Power Supply Card with front plate, 175-265 VAC, 50/60 Hz