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700-712-100-01, Revision 01
System Configuration
UTU-712 and ETU-762 List 1
May 10, 1999
35
Table 15.
Fields and Options in Config System Settings Menu
Field and Options
Description
Application Mode
(a)
SINGLE
System uses a single-pair of twisted copper wire to transport data. For more information, see
“Single-Pair Rate Selectable Applications” on page 14
HDSL Rate Mode
Selects the mode with which the HDSL payload rate will be determined.
MANUAL
HDSL payload rate is set by number of time slots entered for the HDSL Payload Rate
option.
(b)
Each time slot is 64 kbps.
Nx64K AUTO
HDSL payload rate is determined by TT clock input at Nx64k data port. Choosing this option
automatically sets Primary Timing Source to Nx64k (see
HDSL Payload Rate
(c)
256kbps/4
Typing a time slot value of 1 through 12 and pressing
sets and displays the HDSL
payload rate (in MANUAL mode only).
Payload rate is automatically set in Nx64K AUTO
mode.
(d) (e)
Remote Console Access
Selects whether a maintenance terminal connected to an NTU can affect system changes or
is Read-only. This field may be set only at the LTU.
ALLOWED
NTU console screens can be used to configure the system.
BLOCKED
NTU console screens are read-only. The LOC and REM pushbuttons on the NTU are also
disabled. System changes can only be made from the LTU.
Protect Switch Mode
Not available on Nx64k serial data port units.
Local Unit Role
Configures UTU or ETU as LTU (master) or NTU (slave). The default configuration is NTU
(slave). Note that changing the Local Unit Role of a UTU or ETU causes the unit to reset and
the LEDs to cycle.
LTU
Configures UTU or ETU as LTU (master). The LTU-configured rate selectable UTU/ETU does
not provide line power to other HDSL units.
NTU
Configures UTU or ETU as NTU (slave). The NTU-configured rate selectable UTU/ETU does not
provide line power to other HDSL units.
(a) SINGLE is the only application mode.
(b) UTU-712 and ETU-762 have 12 time slots available for rates of 64 kbps to 768 kbps.
(c) An HDSL Payload Rate of 64 kbps (1 time slot) is transmitted at 128 kbps.
(d) Payload rates in both the MANUAL and Nx64K AUTO modes are displayed in the Config LTU and Config NTU Interface menus as
Data Rate/# of TSs (data rate/number of time slots).
(e) Changing the HDSL Payload Rate or Local Unit Role causes the unit to reset and the LEDs to cycle. Log on again by pressing the
several times.
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