Configuring The T3 Feac Response; Configuring The T3 Idle Cycle Flag; Configuring The T3 Line Buildout - Juniper JUNOS 10.1 - CONFIGURATION GUIDE 1-2010 Configuration Manual

Configuring the T3 FEAC Response

The T3 far-end alarm and control (FEAC) signal is used to send alarm or status
information from the far-end terminal back to the near-end terminal and to initiate
T3 loopbacks at the far-end terminal from the near-end terminal.
By default, the router does not respond to FEAC requests. To allow the remote CSU
to place the local router into loopback, you must configure the router to respond to
the CSU s FEAC request by including the
interfaces interface-name t3-options]
If you configure remote or local loopback with the T3
does not respond to FEAC requests from the CSU even if you include the
feac-loop-respond
delete the
To explicitly configure the router not to respond to FEAC requests, include the
no-feac-loop

Configuring the T3 Idle Cycle Flag

By default, a T3 interface transmits the value 0x7E in the idle cycles. To have the
interface transmit the value 0xFF (all ones) instead, include the
at the
option:
To explicitly configure the default value of 0x7E, include the
with the

Configuring the T3 Line Buildout

A T3 interface has two settings for the T3 line buildout: a short setting, which is less
than 255 feet (about 68 meters), and a long setting, which is greater than 255 feet
and less than 450 feet (about 137 meters). By default, the interface uses the short
setting.
[edit interfaces interface-name t3-options]
fcs 16;
[edit interfaces interface-name t3-options]
feac-loop-respond;
statement in the configuration. For the router to respond, you must
loopback statement from the configuration.
statement at the
[edit interfaces interface-name t3-options]
no-feac-loop-respond;
[edit interfaces interface-name t3-options]
[edit interfaces interface-name t3-options]
idle-cycle-flag ones;
option:
flags
[edit interfaces interface-name t3-options]
idle-cycle-flag flags;
Chapter 32: Configuring T3 Interfaces
feac-loop-respond
hierarchy level:
loopback
[edit interfaces interface-name t3-options]
hierarchy level, specifying the
Configuring the T3 FEAC Response
statement at the [edit
statement, the router
hierarchy level:
idle-cycle-flag statement
ones
idle-cycle-flag statement
593