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Under the
Setup
menu,
AES
Pass-Through
‘radio buttons’
offer a manual means of
dropping these relays out as
well. Engage
AES Pass-
Through
to bypass the AES
audio, otherwise it should be
left in factory-default
Nor-
mal Operation
as shown.
A similar set of radio buttons can be found under
Setup
/
AES
Pass-Through
on the front-panel menu tree.
SNMP OPERATION
SNMP Overview
SNMP, or Simple Network Management Protocol, allows other
TCP/UDP/IP equipment on the same Local Area Network (LAN)
to communicate directly with the JUSTIN 808, and for the
JUSTIN 808, itself, to initiate an alarm on the network.
The JUSTIN 808 will interface directly with a network control-
ler, which technically is known as the SNMP ‘Manager.’
SNMP Mode
Open the
SNMP
menu page. Under
SNMP Settings
the factory-
default setting for
Mode:
is
Disabled
. This inhibits communica-
tion between the JUSTIN 808 and the SNMP Manager.
Changing
Mode:
to
Read Only
allows the JUSTIN 808 to be inter-
rogated by the SNMP Manager so that the various alarms can be
integrated with other equipment on the network.
Setting the
Mode:
to
Read & Write
allows the SNMP Manager to
send commands to the JUSTIN 808, essentially putting the
JUSTIN 808 under total remote control by other station equip-
ment.
SNMP Security
SNMP ‘Communities’ serve as passwords for this function. Go
into the
Read:
and
Write:
boxes to enter text that is specified for
the read/write strings on the SNMP Manager monitoring device.
Execute a
Save
after entering this text.
SNMP Ports
General Port 161
and
Trap Port 162
, are default SNMP ports and
customary assignments for a majority of SNMP operations.
These may be changed as required.
SNMP Traps
When the JUSTIN 808
initiates
an alarm, rather than being
que-
ried
or
polled
for one, the alarm is known as a ‘trap.’ Three lo-
cal network IP addresses may be entered into the three
Trap
Destination:
boxes, each IP address corresponding to other de-
vices on the LAN that want to be notified of alarms.
Be sure to initiate a Save command after any SNMP entry is
changed.
