CANOGA PERKINS 2461 E1 Modem - Manual (Page 12)

EdgeAccess Universal Chassis System
2461 Modem User Manual 1-4
1.1.4 Alarms
The Stand alone 2461 Modem provides input and output dry alarm relay contacts on the rear
panel. These allow management personnel to collect and route alarm data to an external audio or
visual "shop" alarm, provided by the user.
The 2461 rack mount modem, as a component of the Universal Chassis System (UCS), passes
alarm data to the UCS Chassis Interconnect Module (CIM), where it is routed via dry contact
alarm relays to an external alarm, provided by the user.
1.1.5 Diagnostic and Test Functions
The 2461 modem provides complete Loopback feature, Continuous Self Test, and extensive link
and Bit Error Rate Testing.
1.1.6 Stand Alone Modem
The stand alone version comes in a compact enclosure for desktop, shelf, rack, or wall mount
installations. It has a built-in AC or DC power supply and utilizes the same ELIMs and OLIMs as
the rack mount version.
On the front panel, the 2461 stand alone modem includes the following:
• 1 DE 9 EIA-232 port
• An MDM/TRM switch
♦ In the MDM position, the modem transmits a modem signal via the serial port (port is
emulating DTE). The modem will, therefore, support modem dial-up connections.
♦ In the TRM position, the port emulates VT100 terminal mode (port is emulating DCE).
• A LOC/OFF/REM switch to select Local Loopback, Remote Loopback or off-position. The
switch will be operational only if the loopback mode is set in "hardware mode" (See Chapter
7).
• A Reset switch. This switch resets the processor without affecting the flow of the payload.
On the rear panel, the 2461 Stand alone modem includes the following:
• Major and Minor Alarm Input Connector
• Major and Minor Alarm Output Connector
• A Redundancy Cable, used when the stand alone modem is in redundant operation.