DMG20 is a management card that implements an SNMP agent to manage devices (and their remotes) in the DM-SBT, DATACOM’s 19″ multi-service subrack. The equipment in the sub-rack must meet the Telebrás 225-540-781 standard for management.
Through the DMG20 management card, the DmView Network Management System is able to analyze errors, alarms, performance and change configurations on equipment in the subrack and their remotes.
Protocols implemented to support the SNMP application (Simple Network Management Protocol): UDP (User Datagram Protocol), IP (Internet Protocol), ICMP (Internet Control Message Protocol), ARP (Address Resolution Protocol).
RS485 serial interface to communicate with devices in the subrack, allowing expansion capabilities to up to 32 devices.
V.24/V.28 (RS232) serial port in the front panel to configure: DMG20 IP address, sub-network mask, internal RS485 bus speed, read/write SNMP community, SET SNMP operation-enabled, access password and NMS IP address to send traps.
10BaseT Ethernet Port (RJ45) in the front panel to allow communication with the SNMP manager.
All information exchanged between DMG20 and the SNMP manager are documented in MIB modules, described in ASN.1 (Abstract Syntax Notation One).
Remote upgrade can be performed via TFTP.
LED indicators for Tx, Rx and Link OK for the Ethernet port, ERROR in the internal RS485 bus and power supply.