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Secure Remote Console Server Front and Rear view

Features / Benefits

  • Remote Secure Console Server via SSL
  • Supports Unlimited Remote Sites
  • Transports Async Serial Communications over a 10/100 Ethernet Network
  • Async Data Rates - 1200bps to 115.2Kbps for Simultaneous Four-Port Operation
  • Serial Interface - Four RS-232 Ports on RJ-45 Connectors
  • LAN Interface - 10/100Base-T on RJ-45
  • Supports Twisted Pair Crossover Detection and Auto-Correction (HP Auto- MDIX)
  • Secure SSL Encryption
  • Straight-through CAT-5 cabling for Easy Async Connection
  • Log Off, Location I.D. feature and supports DHCP
  • Firmware Upgrades via 10/100 LAN Port
  • Extends Management Capabilities to Remote Devices
  • AC or DC Power Supply Options
  • 1U Rackmount Enclosure


The Digital Mixing Module X.21 (DMM-X21) provides the network manager with a cost effective means of expanding existing, leased line polled networks without adding computer ports or communications links. With the DMM-X21, up to 4 DTE or DCE devices can share the same port and communications link using the contention and control protocols normally resident in the host hardware and software.

Once installed, system and network efficiency are increased through higher host processor utilization coupled with the significant decrease in idle time between host / terminal traffic sessions.

Ideal for synchronous network environments, the DMM-X21 is protocol transparent at data rates up to 1.024Mbps. Data arriving at the Master Port is continually broadcast to all Subchannels. The attached terminal device that raises the Control (C) or Indicate (I) signal is automatically given control of the DMM-X21 until data transmission is complete. Clocking is accomplished from the attached Digital Modem.

The DMM-X21 incorporates optional Anti-Streaming circuitry. If enabled, Anti-Streaming will automatically remove a defective terminal from service if the Control (C) or Indicate (I) signal is present longer than the user predefined selection period.

Elastic Tail Circuit Buffers compensate for systems having different clock sources. Large 512 bit buffers enable the DMM-X21 as an ideal choice for VSAT or land line applications.

The DMM-X21 is equipped with an internal 110/220VAC switch selectable linear power supply and has a three year warranty.The UDC-ME V.35 modem eliminator allows two DTE devices (such as routers) to communicate within proximity of each other. The UDC-ME transmits data bidirectionally at clock rates of 1.2k up to 3.072Mbps between DTE devices. All clocking and signal crossover are provided within the UDC-ME. The unit is equipped with two interface slots that allow a host of serial interface cards to be utilized. The serial interface cards available are RS-232, RS-422/449, RS-530, X.21, V.35 and HSSI. The Serial Interface cards are interchangeable and may be mixed such as RS-232 to V.35 thus eliminating the need for an interface converter or changing expensive serial cards on a DTE device such as a router.

The UDC-ME V.35 modem eliminator is also an excellent choice for testing router-to-router connections via the serial ports. The unit is an excellent choice for interconnecting your LAN or legacy mainframe equipment.

Installation is fast and simple by setting the internal switches for Clocking, Carrier Operation and RTS to CTS delay. The UDC-ME has status LEDs for each attached DTE device which allows the user to visually confirm the presence of clock and control signals.

The UDC-ME utilizes state of the art digital CMOS technology to provide a feature filled product at a very affordable price. Our Field Programmable Gate Array (FPGA) design has allowed us to offer this product with a wide selection of clock rates. This design approach has also reduced the amount of clock jitter for high speed transmissions.

The UDC-ME is housed in a sturdy metal enclosure and operates on 110/220VAC or optional -48V DC power. Typical MTBF figures are in excess of 150,000 hours of operation.

The UDC-ME has a three year warranty and a 24 hour turnaround on warranty repairs.

Secure remote console server network diagram


Application Secure Remote Console Server, 4-Port RS-232 Serial port management via Ethernet with a secure SSL Web Browser
Interface RS-232 on RJ-45’s, Async, 8, N, 1(10 bit)
LAN: 10/100 Base-T, RJ-45 with DHCP Support
Capacity Up to Four Serial Async Ports converted to one 10/100 Base-T LAN Port
Data Rates Serial Data:1200 bps to 115.2 Kbps for simultaneous 4-Port operation
LAN: 10/100Mbps
Data Format Data transparent at all data rates
Serial Buffer 2048 bytes
Configuration Encryption Via SSL Encrypted Web Browser Interface, supports SSL v3
User Configuration Stored in Flash memory
Firmware Upgrades Upgraded via 10/100 LAN Port
Indicators System: Green or Yellow
Peer: Green or Yellow
Port 1: Green or Yellow
Port 2: Green or Yellow
Link: Green
Activity: Yellow
Included with each unit: 1)  Installation Guide
Power Source AC Power Option: 90-120VAC 50Hz or 90-240VAC, 50/60Hz, external 110/220 select, IEC Power Inlet
DC Power Option: DC Voltage, Input Range of -36 to -72vdc,
Lead Free: RoHS Compliant
Operating Temp: 32º to 122º F (0º to 50º C)
Relative Humidity: 5 to 95%Non-Condensing
Altitude: 0 to 10,000 feet
Dimensions Length ....... 3.22inches (8.18 cm)
Width ........ 19.00 inches (48.26 cm)
Height ....... 1.75 inches (4.44 cm)
Weight 2 pounds (0.97 Kg)
Warranty Three Years, Return To Factory

PT# 183000
Model: Async2IP_WEB
Desc: 4-Port Remote Secure Console Server
Power Supply Options

PT# 180062

Model: AC 110VAC
PT# 180070
Model: AC 110/220VAC

PT# 180074
Model: DC 36-72VDC