Verilink HDM 2182 (880-502925-001) Product Manual - Manual (Page 10)

HDM 2182 DS3 DSU Overview
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Verilink HDM 2182 User Manual
Features
Features of the HDM 2182 include the following:
Front Panel
Management
Ports
The HDM 2182 has enhanced SNMP-management when used with a
Node Controller Module (NCM 2000) and can also be managed
directly using the Craft (ASCII) interface through the Local port or
via Telnet through the SNMP port.
Local ASCII
Interface Port
The Local port provides a Craft interface for configuration, control,
and monitoring. A secondary function of this interface is to provide
a debug monitor port for troubleshooting.
This interface uses a 19.2 kbit/s rate and is asynchronous without
hardware flow control. The HDM 2182 Local port is RS-232
compliant for a front-panel RJ-11 connector.
SNMP Port The front panel of the HDM 2182 provides an RJ-45 SNMP port for
direct Ethernet twisted-pair communication via Telnet. The HDM
2182 embedded SNMP supports SNMPv1 and is 10BaseT compliant.
Front Panel LEDs Tri-color Network, Data Port, and System LEDs.
Dual High-Speed
Serial Interface
(HSSI) Ports
Two HSSI data port interfaces (DCE) for connection to DTE.
DS3 Network
Ports
75 Ω coaxial TX and RX DS3 network ports.
Timing Options The hardware supports three modes of system timing:
• Internal—Reference timing derived from the free-running
internal oscillator
• Network—Reference timing derived from the incoming DS3
data stream
• External—75 Ω female BNC connector accepts external timing.
The reference timing input accepts a TTL level DS3 rate clock.