255-700-585
3-27
PacketStar
®
PSAX 3-Port DS3/E3 ATM Protection Module User Guide
, Issue 1
Release 10.0.0
Chapter 3 Configuring Ports and Channels Using the Console
Configuring the Ports
Table 3-7. Protection 3-Port E3 ATM Port and Channel Configuration Window Field Descriptions
Field Name
Field Value
Description
Loopback
Default:
NoLoop
Range: N/A
Format: Predefined
Specifies whether the port is to be used for loop-
back testing and, if so, the type of loopback to be
performed.
NoLoop
Indicates that the port will not be used for loop-
back.
LocalLoop
Indicates that local loopback will be used on this
port. Indicates that local loopback will be used on
this port. The transmitted signal is sent to the
receive side of the same port.
LineLoop
Indicates that line loop will be used on this port.
The received signal will be sent through the
receiver and the line driver, and then back out to
the originating point.
Transmit Clock
Default:
LocalTim-
ing
Range: N/A
Format: Predefined
Indicates what type of synchronization is used by
the interface to maintain proper data flow
through the PSAX system and the remote devices
connected to the system.
LocalTiming
Selects a synchronization source (Composite-
Clock, T1BITS, E1ETSI, CompositeClockDS0A,
Freerun, or LineTiming) that is provided through
the Stratum 3–4 module.
LoopTiming
Selects the recovered clock from the received
data and is used as the transmit clock on the
selected interface.
Payload Scramble
Default:
Enabled
Range: N/A
Format: Predefined
Specifies the presence or absence of cell payload
scrambling. This function improves the security
and robustness of the ATM cell payload as part of
forward error correction described in ITU I.432.1.
Enabled
Indicates that the payload scrambling function is
operating on this port.
Disabled
Indicates that the payload scramble function is
not operating on this port.
Line Type
Default:
G832
Range: N/A
Format: Predefined
Specifies the framing mode to be used on the line
coming into this port.
G832
Indicates that the framing mode conforms to the
ITU-T G.832 (1993) standard.
G751
Indicates that the framing mode conforms to the
ITU-T G.751 (1998) standard.