110
Step 3: ETM® System Configuration
5.
Line length to PBX
specifies the distance from the Appliance to the
PBX. This setting must correspond to the settings at the telephone
network and may not necessarily match the actual distance.
In the
Line Length to PBX
box, click the down arrow and select
the option that matches the setting at the telephone network.
6.
In the
Telco Delay
box, type or select the time (hours, minutes, and
seconds) before notification that the trunk is down is sent to the
Diagnostic Log
(at which time any specified System Event Tracks
are executed, such as email alerts). The default is 1 minute.
7.
The
Manual Inline
check box controls whether the Span
automatically goes inline after it is rebooted or restarted.
Select the check box to cause the Span to come up offline
whenever it is rebooted or restarted. To place the Span inline after
a reboot or restart, execute the ETM Command
SPAN INLINE
from the
ASCII Management Interface
.
Clear the check box if the Span is to automatically go inline after a
reboot or restart.
8.
The ETM System supports user-enabled Pass-Through based on
received Inband Line and ESF Data Link Loop-Up/Loop-Down codes.
The Span activates/deactivates Pass-Through within 5 seconds of
detecting the Loop-Up/Loop-Down codes. On T1 CAS Spans, place the
Span offline before setting pass-through mode to
On
. For normal
operation, use
Off
or
Autodetect
. Note that when auto-detect is used
on T1 CAS lines, ghost calls or other errors may occur on either side of
the test.
a.
In the
Loopback Test Pass-Through Mode
area, select one of
the following:
Off
—(Default) The telephony data is transmitted through the
Span parsed and monitored and Policy is enforced.
Autodetect
—When a Loop-Up code is detected, the Span
activates Pass-Through. When a Loop-Down code is detected,
the Span deactivates Pass-Through. When
Autodetect
is
selected, you can also specify a timeout value from 0 seconds
up to 1 day. (1 hour is the default; 0 indicates never timeout.)
Only set the Loopback Test Pass-Through mode to On
when you are planning to begin a test, not for normal
operation.
When Loopback Test Pass-Through Mode is on, no
Policy enforcement or call monitoring occurs, D-channel re-
establishment and error count threshold checking/logging is
disabled, and on T1 CAS lines, call traffic may be impaired. An
error count value of 0 is sent to the Management Server.
For information about
assigning Tracks to
System Events, see
"System Events" in the
ETM
®
System
Administration Guide
.
You can also turn
pass-through mode on
and off via ETM
Commands. T1
LOOPBACK MODE
ON places the Span
into pass-through
mode; T1 LOOPBACK
MODE OFF takes the
Span out of pass-
through mode.
