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Section 61245207L2-5, Issue 2
61245207L2-5C
5. CONTROL PORT OPERATION
The FT1 DP 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 5.
The terminal interface operates at data rates from
2.4 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 VT-100 or compatible.
NOTE
If you are using a personal computer (PC)
with terminal emulation capability, be sure to
disable any power saving programs.
Otherwise, communication between the PC
and the HDSL unit may be disrupted, resulting
in misplaced characters or screen timeouts.
Operation
Abbreviations used in the screen diagrams are detailed
in
Table 5
.
A terminal session is initiated by entering multiple
Figure 5. RS-232 (DB-9) Pin Assignments
6
7
8
9
1
2
3
4
5
TXD (Transmit Data)
RXD (Receive Data)
SGN (Signal Ground)
Table 5. Definition of Screen Abbreviations
Definition
Errored seconds
DS1 (SF) ....... Second in which a BPV or frame bit error occurs
DS1 (ESF) .... Second in which a BPV or CRC error occurs
DSL .............. Second in which a CRC error occurs
Severely errored seconds
DS1 (SF) ....... Second in which 1554 BPVs or 8 frame bit errors occur
DS1 (ESF) .... Second in which 1544 BPVs or 320 CRC errors occur
DSL .............. Second in which 165 CRC errors occur
Unavailable seconds
DS1 ............... Second in which there is a loss of signal or sync
DSL .............. Second in which there is a loss of signal or sync
Superframe format
Extended superframe format
Bipolar with 8-zero substitution
Alternate mark inversion
Line build-out
Bipolar violation
DS1 ............... Second in which a bipolar violation occurs
T1 network interface unit
Serial number
Fifteen-minute period
Twenty-four-hour period
Abbreviation
ES ...........................
SES .........................
UAS ........................
SF ............................
ESF .........................
B8ZS .......................
AMI ........................
LBO ........................
BPV ........................
NIU .........................
S/N ..........................
15M ........................
24H .........................
