Far-End Loop/Normal; Local Loop/Normal; Ext Clock/Int Clock; Adaptive/Normal - Northern Telecom DMS-100 Series Installation And Maintenance Manual

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0
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Far-end Loop/Normal:

0 This option selects either normal operation or a far-end loopback
0 test. When
0 placed to another DU, the integrity of the end-to-end data
0 nel is checked.
0 end DU to loop back data at the RS-232C
0 entered on
0 Under Test LEDs on both DUs are on during a
0 When the Far-end Loop is not selected (Normal), the DU is set for
0 normal operation.
0 5-4.
0

Local Loop/Normal:

0 This option selects either normal operation or a
0 test. When
0 integrity of the DTE to DU connection is
0 vated, the
0 the DTE. Characters entered on the DTE keyboard are echoed
0 to the DTE.
0 Local Loop
0 normal operation.
0 5-4.
0

Ext Clock/Int Clock:

0 When operating
0 clock for clocking data from
0 (external) Clock
0 When Int (internal) Clock is selected, the clock is
0 the DU. Int Clock is the usual setting.
0 missions, select the Int Clock option for at
0 communicating DUs.
0

Adaptive/Normal:

0 This option
0 parameters (e.g., speed, mode) of
0 switch is set to Adaptive, the DU adapts its operating parameters
0 (data rate and synch/asynch mode) to match the far-end DU.
0 the switch is set to Normal, the DU does not adapt to the operat-
0 ing parameters of the far-end DU.
0 both DUs have compatible operating parameters).
0

Buzz Loud/Soft:

0 This option is used to control the volume, either Loud
0 of the tone generated when the Ring Again feature is used.
0 the Ring Again feature is activated, the
0 sends a signal to alert the calling DU.
0
the Far-end Loop option is selected, and a call is
When activated, the near-end DU tells the far-
the DTE keyboard
For more details see Loopback Tests on page
the Local Loop (loopback) option is selected, the
DU loops back data at the RS-232C interface towards
The under test LED lights during the test.
option is not selected (Normal), the DU is set for
For more details see Loopback
at synchronous
is selected, the clock is provided by the DTE.
allows the DU to adapt to and display the operating
(NT4X25AA /AE /AN /AP /AX /AZ)
interface.
are echoed back to the DTE.
far-end
checked.
speeds, this option selects the
the DTE to the
For synchronous trans-
least
the far-end
(The Connect LED flashes until
DMS-100
297-2121-226
VINTAGE 05.01
chan-
Characters
The
loop test.
local loopback
When acti-
back
When the
Tests on page
DU. When Ext
provided by
one of the
DU. When the
When
or Soft,
When
Family switch
3-19