DMM-4DC

The Digital Mixing Module (DMM-4DC) is a network expansion device for modem sharing or port sharing applications in polled, contention and broadcast environments. The DMM-4DC allows up to four RS-232 DCE or DTE devices to share a Modem/DSU or computer port. Data rates of up to 128 Kbps are supported. The unit supports -48 VDC power input for central site applications.

DMM-4

The Digital Mixing Module (DMM-4) is a network expansion device for modem sharing or port sharing applications in polled, contention and broadcast environments. The DMM-4 allows up to four RS-232 DCE or DTE devices to share a Modem/DSU or computer port. Each port is DCE/DTE selectable and has an 8 bit tail circuit buffer. Data rates of up to 128 Kbps are supported.

DMM-X21 W/512 BUFFERS

The Digital Mixing Module (DMM-X21) is a network expansion device for modem sharing or port sharing applications in polled, contention and broadcast environments. The DMM-X21 allows up to four X.21devices to share a modem or computer port. Each port is DCE/DTE selectable and has optional 512 bit tail circuit buffers for each port. The Device also supports multiple port broadcasting and fall-back and forward clocking. Data rates of up to 1.024 Mbps are supported. CE APPROVED for Europe.

View the DMM-X21 printed circuit board


DMM-X21/2

The Digital Mixing Module (DMM-X21) is a network expansion device for modem sharing or port sharing applications in polled, contention and broadcast environments. The DMM-X21 allows up to two X.21devices to share a modem or computer port. Each port is DCE/DTE selectable and has optional 512 bit tail circuit buffers for each port. The Device also supports multiple port broadcasting and fall-back and forward clocking. Data rates of up to 1.024 Mbps are supported. CE APPROVED for Europe.

MSD-4 and MSD-8

The Modem Sharing Devices are designed to allow RS-232 DTE (terminal) devices to share Leased Line and Dial line Modems or DSU's. Data arriving at the Master Port is continually broadcast to all Subchannels. The attached terminal device that raises the RTS control signal is automatically given control of the MSD. Data rates of up to 128 Kbps are supported.

DSD-V35/2 and DSD-V35/4

The Digital Sharing Devices are designed to allow high speed V.35 DTE (terminal) devices to share Leased Line and Dial line Modems or DSU's. Data arriving at the Master Port is continually broadcast to all Subchannels. The attached terminal device that raises the RTS control signal is automatically given control of the DSD. Data rates of up to 2.048 Mbps are supported.