ADTRAN 3192 H4TU-C, Installation And Maintenance Practice

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61223404L2-5A Issue 1, December 2003 7
5. CONTROL PORT OPERATION (HDSL4)
The 3192 H4TU-C provides a front panel-mounted
DB-9 connector that supplies an RS-232 interface for
connection to a controlling terminal. The pinout of the
DB-9 is illustrated in
Figure 6 .
Figure 6. RS-232 (DB-9) Pin Assignments
The terminal interface can operate at data rates of 1.2,
2.4, 4.8, 9.6, and 19.2 kbps. The asynchronous data
format is fixed at 8 data bits, no parity, and 1 stop bit.
The supported terminal type is VT100 or compatible.
The 3192 H4TU-C supports two types of terminal
emulation modes. The manual update mode is a dumb
terminal mode, allowing easy access to print screen and
log file commands. This mode also includes a “
3
SPACES TO UPDATE
” message on the top of the
terminal screen (press the spacebar three times to update
the screen). The real time update mode enables all
screen highlighting and cursor placement. Print screen
and log file commands are not available in this mode.
The default terminal mode is real time update mode.
NOTE
Pressing
C
TRL
+T
while on any screen will
toggle between manual and real time terminal
modes.
NOTE
Pressing
E
SC
while on any screen will go back
to the previous screen.
NOTE
Many portable personal computers use power-
saving programs that are known to interfere
with applications running on the personal
computer. If using a portable personal
computer with terminal emulation capability,
communication between the computer and the
HDSL4 unit may be periodically disrupted if
power saving programs are being used on the
personal computer. The symptoms may
include misplaced characters appearing on the
screen or the occurrence of screen time outs.
These symptoms are not disruptive to the
operation of the circuit and are avoidable if the
power saving options are disabled or removed.
Operation
The screens illustrated in the following section apply to
an HDSL4 circuit deployed with the ADTRAN HDSL4
technology. The circuit includes an H4TU-C, up to two
H4Rs and an H4TU-R. Other configurations are
possible (such as use of another vendor's equipment)
and their displays will vary slightly from those shown in
this section.
For abbreviations used in the screen diagrams, see
Table 5 .
A terminal session is initiated by entering multiple
spacebar characters which are used by the H4TU-C to
determine the speed of the terminal. Once the speed has
been determined, an
HDSL4 Main Menu
is presented as
illustrated in Figure 7 .
6
7
8
9
1
2
3
4
5
TXD (Transmit Data)
SGN (Signal Ground)
RXD (Receive Data)
Table 5. Screen Abbreviations
Abbreviation Definition
SF Superframe Format
ESF Extended Superframe Format
B8ZS Bipolar with 8 Zero Substitution
AMI Alternate Mark Inversion
LBO Line Build Out
BPV Bipolar Violation
NIU T1 Network Interface Unit
S/N Serial Number
15M 15-Minute Period
24H 24-Hour Period