
System Configuration
350-819-200-01, Revision 01
22
November 12, 1999
HLU-819 List 1
Nx64K Port (Data port on the UTU-814)
Interface Type
Selection is only available for NTU. The serial data interface at the
Nx64K port conforms to V.35, V.36, RS-530, RS-449, or
X.21standards.
Data Rate/# of TSs
Specify the Nx64K transmit data rate as the number of kbps or the
number of Nx64K time slots.
64 to 1536 (kbps)
or
Enter the data rate from 64 to 1536 kbps (for example, 64, 256,
768). Factory default setting is 1536 kbps (24 time slots).
0 to 24 (time slots) Enter the number of Nx64K time slots up to 24 (for example, 1,12,
24). Factory default setting is 24 (1536 kbps).
Beginning TS
Enter the number of the beginning time slot for the transmitted
serial data. Options are time slots 1 to 24 in STRUCT (framed)
application mode and time slot 1 in UNSTRUCT (unframed) mode.
The factory default setting is time slot 1.
Transmit Clock
Specify the transmit data (SD) clock as External (EXT), Internal
Rising Edge (INT_RISING), or Internal Falling Edge
(INT_FALLING).
CTS/DSR/RLSD
Specify one of three methods the LTU and NTU uses to generate
the CTS, DSR, and RLSD control signals for the Nx64K (V.35, V.36,
RS-530, RS-449, or X.21) serial data port. The Nx64K port is
hardware configured as DCE. Set each of these parameters to
match the requirements of the application. The choices are:
STD (standard)
The output control signal follows the ITU standards.
ON (force ON)
Control signals are always ON.
OFF (force OFF)
Control signals are always OFF.
LL/RL
Select whether the LTU and NTU respond to or ignore the Local
Loopback (LL) and Remote Loopback (RL) control signals.
DIS
LTU and NTU ignore LL and RL control signals.
ENA
LTU and NTU respond to LL and RL control signals. Status of local
and remote loopbacks appears on the Test display.
(a) The number of times slots selected for the DSX-1 port determines the number of time slots
remaining for the Nx64K port, and may determine the beginning time slot for the Nx64K
port in NTU only. Overlapping time slots are not allowed.
Table 5.
Settings in Config LTU and NTU Interface Menus (Cont.)
Field
Description