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WAN Circuit Configuration—Modify 299
Models 2616RC, 3096RC & 3196RC Admin Reference Guide 20 • T1/E1 Link
• YellowFormatDL(2)—FF00 pattern in the Data Link
• YellowFormatFrame12FS(3)—FS bit of frame 12
FDL (dsx1FDL)
This variable describes which implementation of FDL is being used, if any. FDL applies only to T1 circuits.
• other(1)—Indicates that a protocol other than one following is used.
• dsx1Ansi-T1-403(2)—Refers to the FDL exchange recommended by ANSI.
• dsx1Att-54016(3)—Refers to ESF FDL exchanges.
• dsx1Fdl-none(4)—Indicates that the device does not use the FDL.
If one of the E1 line types has been selected, this parameter is ignored.
Test Settings
This portion of the WAN Circuit Configuration Link window contains information described in the
following sections.
Force Yellow Alarm (linkYellowForce)
This variable identifies which standard will be used to transmit and identify the Yellow Alarm.
• linkYellowAuto—Do not force the transmission of a yellow alarm. But, yellow alarm may be
automatically transmitted.
• linkYellowOn—Force the transmission of a yellow alarm even if the received signal is in frame.
• linkYellowDisable—Do NOT transmit a yellow alarm even if the received signal is out of frame.
Loopback Configuration (dsx1LoopbackConfig)
This variable represents the loopback configuration of the DS1 interface. Agents supporting read/write access
should return badValue in response to a requested loopback state that the interface does not support. The val-
ues mean:
• dsx1NoLoop(1)—Not in the loopback state. A device that is not capable of performing a loopback on the
interface shall always return this as it's value.
• dsx1PayloadLoop(2)—The received signal at this interface is looped through the device. Typically the
received signal is looped back for retransmission after it has passed through the device's framing function.
• dsx1LineLoop(3)—The received signal at this interface does not go through the device (minimum penetra-
tion) but is looped back out.
• dsx1OtherLoop(4)—Loopbacks that are not defined here.
Send Code (dsx1SendCode)
• This variable indicates what type of code is being sent across the DS1 interface by the device. The
values mean:
• dsx1SendNoCode(1)—Sending looped or normal data
• dsx1SendLineCode(2)—Sending a request for a line loopback