RFL Electronics Inc.
I N S T R U C T I O N D A T A
The Network Communications Module (NCM) is an Asynchronous Data Module designed for use in
RFL IMUX 2000 T1 and E1 multiplexers. It provides one DCE Half/Full-Duplex channel between an
unlimited number of locations using a single 64 kbps DS0 time slot. The NCM provides a fast and
reliable NMS communication path between nodes of a T1 or E1 network, and can also be used for
party-line applications such as DNP and Modbus networking.
The NCM is remote-controllable when installed in an RFL remote controllable shelf. The following
module parameters can be configured remotely via NMS or locally via DIP switches. A DIP switch
setting selects whether the card is in remote or local mode.
o TX/RX Time Slot 1-31
o TX Bus Direction TX-A(RX-B) / TX-B(RX-A)
o Service enable/disable On/Off
o Equipment Loopback On/Off
o Payload Loopback On/Off
o Block timeslot 16 for CAS in E1 operation On/Off
o Port 2 On/Off
o Rogue Control On/Off
o CM Address Any, Greater Than, Less Than
o Baud Rate 2400, 4800, 9600, 19.2k, 38.4k
o Parity None, Odd, Even, Mark, Space
o Word Length 7 or 8 data bits
o Application Modes Broadcast, NMS, Master, D&I slave, End slave
o Remote Operation On/Off
RFL NCM RFL Electronics Inc.
November 6, 2007 1 (973) 334-3100