Control Port Operation; Figure 6. Rs-232 (Db9) Pin Assignments - ADTRAN DDM Plus HTU-C Installation And Maintenance Manual

5. CONTROL PORT OPERATION

The HTU-C provides a faceplate-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.
1
6
2 TXD (Transmit Data)
7
3 RXD (Receive Data)
8
4
9
5 SGN (Signal Ground)
Figure 6. RS-232 (DB-9) Pin Assignments
Abbreviation Definition
ES ......................... Errored Seconds
DSX/DS1 ......... (SF) ....... Second in which a BPV or frame bit error occurs.
HDSL ............................... Second in which a CRC error occurs.
SES ....................... Severely Errored Seconds
DSX/DS1 ......... (SF) ....... Second in which 1544 BPVs or 8 frame bit errors occur.
HDSL ............................... Second in which 165 CRC errors occur.
UAS ...................... Unavailable Seconds
DSX/DS1 ......................... Second in which there is a loss of signal or sync.
HDSL ............................... Second in which there is a loss of signal or sync.
SF .......................... Superframe Format
ESF ....................... Extended Superframe Format
B8ZS ..................... Bipolar with 8 Zero Substitution
AMI ...................... Alternate Mark Inversion
LBO ...................... Line Build-Out
BPV ...................... Bipolar Violation
DSX/DS1 ......................... Second in which a bipolar violation occurs.
NIU ....................... T1 Network Interface Unit
S/N ........................ Serial Number
15M ...................... Fifteen-Minute period
24H ....................... Twenty-Four-Hour period
8
The terminal interface operates at data rates from
1.2 kbps to 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.
Operation
For abbreviations used in the screen diagrams, see
Table 7.
Table 7. Screen Abbreviations Defined
(ESF) .... Second in which a BPV or CRC error occurs.
(ESF) .... Second in which 1544 BPVs or 320 CRC errors occur.
Section 61245003L6-5, Issue 5
NOTE
If you are using a personal computer (PC) with
terminal emulation capability, be sure to disable
any power saving programs.
communication between the PC and the HDSL
unit may be disrupted, resulting in misplaced
characters or screen timeouts.
Otherwise,
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