Verilink WANsuite 5130 (34-00298.L) Product Manual - Manual (Page 143)

V T 1 0 0 I n t e r f a c e 4-15
Invert Clock In DTE Packet mode, this parameter changes the clock edge of the
transmitted data. The Invert Clock parameter is only available for use in DTE
mode, and DTE mode is only available for the Serial 2 port. Consequently,
this configuration option only works for the Serial 2 port, and should remain
disabled when configuring services for the Serial 1 port.
Values: Disable, Enable
Default: Disable
Tx Clock Selects the clock the unit uses to sample the data transmitted from the DTE.
When set to “Internal,” the data is sampled directly with the transmit data
clock that is also supplied to the DTE as Transmit Clock. The “External”
option uses the external clock from the DTE.
Values: Internal, External
Default: Internal
NOTICE: The “External” option is valid only in Packet mode.
LL The Local Loopback parameter can be set to “Enable” or “Disable.” Selecting
“Enable” allows the unit to go into Local Loop when the LL pin on the
Serial 1 port goes high. The unit exits the loop when the LL pin goes low. If
you select “Disable,” the unit ignores the LL pin on the Serial port.
Values: Disable, Enable
Default: Disable
NOTICE: For more information on pin assignments, refer to Connector Pin
Assignments shown on page A-7.
V54 Selecting “Enable” allows the unit to respond to in-band V.54 loop codes. If
you select “Disable,” the unit ignores these codes.
Values: Disable, Enable
Default: Disable
DTR Alarm Control Lets you set DTR Alarm Control parameters. Selecting “Enable” allows the
unit to go into alarm on loss of DTR, which occurs when the Serial port
detects that the DTR signal is low.
Values: Enable, Disable
Default: Disable
DTR Alarm Status Lets you view the current DTR Alarm status.
Format Selects the port’s operating mode.
Values: Sync, Async
Default: Sync