General DataComm 076P054-001, Руководство по установке и эксплуатации

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076R176-000 SC SRM-6 Multiplexer 1-1
Issue 1 Installation & Operation Manual
Chapter 1:
Introduction and
Specifications
SpectraComm SRM-6 Overview
The SpectraComm SRM-6 is a six-channel Time-Division Subrate Multiplexer that interfaces with
a SpectraComm V.F28.8/33.6 modem, a SpectraComm 521A/S DDS DSU, a SpectraComm 553 T1
DSU, or any RS-232 or RS-530 DCE device in point-to-point applications. A SpectraComm
Manager (SCM) card provides the Telnet and Ethernet connections. Field personnel can attach a
VT100/ASCII terminal to the SCM craft port to provision the SRM-6, monitor alarms and status,
and perform diagnostics and maintenance. The SCM is the SNMP proxy agent for the SRM-6 and
the modem/DSU, allowing alarm traps sent to a trap manager.
Intended Use
The SRM-6 installs in one slot of a SC 2000 low density shelf or a SC 5000 high density shelf. The
SRM-6 front panel provides LEDs that indicate operating status. The mass termination connector
at the front panel is cabled to an accessory panel which provides six EIA-232-E interfaces through
DB-25 Female connectors wired as DCE. The accessory panel mounts onto the rear of the SC 2000
shelf or can be installed at the front of the telco rack. Refer to
Figure 2-2 and accompanying
paragraphs for complete front and rear panel connection instructions.
Features & Benefits
• Provides efficient, cost-effective network access for subrate applications by reducing the need
for additional communication lines and equipment.
• Combines synchronous and asynchronous data from up to six subrate users into one TDM
payload.
• Allows users’ mixed data rates in one TDM payload.
• Built-in diagnostic aggregate loopback (toward DTE)
• Alarm monitor and SNMP trap generation
• Telnet, LAN, and ASCII/VT100 craft connections
via the SCM
• Multi-level password protection for craft or Telnet management access; inactivity timers.
• Front Panel LEDs indicate operating status
• TFTP download for firmware upgrades
• Power requirements are less than 6 Watts per card.