Alcatel Omni Switch/Router User Manual page 995

8) Loopback Mode
The loopback configuration for this port. Loopback configurations describe the relation
between the device attached to a
Framing functionality assembles
depending on how the port is configured. Possible values are as follows:
The port is not in a loopback state. This is the typical live network state for a
port.
T1
The received signal at this
through the port's framing functionality. This state should only be used for
debugging purposes.
The received signal at this
tionality, and is looped straight back out the port. This state should only be
used for debugging purposes.
The transmitted signal from the
nally. The signal passes through the
back. This state should only be used for debugging purposes.
9) Signaling
The type of signaling used on this port. Only the
ling) options are applicable to a circuit emulation service port. The
Channeling) option is used with external
option, then you are enabling robbed-bit signalling.
Robbed-bit signalling can be used with SuperFrames or Extended SuperFrames. In each
SuperFrame, the 6th and 12th frame may contain "robbed bit" (A, B) signalling, which means
the least significant bit is robbed from each time slot in the 6th and 12th frame and used for
signalling. In Extended SuperFrames, this robbed-bit signalling (A, B, C, D) occurs in the 6th,
12th, 18th, and 24th frames.
10) Trap Generation
Enables all of the -based traps related to T1 and E1 ports.
SNMP
11) Yellow Alarm Detection
Specify the yellow alarm detection state for this port. A T1 port configured as SuperFrame
(SF) can produce false yellow alarms if a Layer 2 protocol like High-Level Data Link Control
(HDLC) is being used. Therefore, you can disable yellow alarm detection with this option. (A
T1 port set to Extended SuperFrame (ESF) will not produce false yellow alarms.)
port and the framing functionality within the
T1
frames into SuperFrames and Extended SuperFrames,
T1
port is looped out of the port after passing
T1
port does not go through the port's framing func-
T1
side of this port is looped back inter-
inward
framing functionality before looping
T1
and
Primary Rate ports. If you select the
ISDN
Configuring a T1 Port
port.
T1
(Channel Associated Signal-
(Common Signal
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