Nortel 600 Series Manual page 53

Table 2-AS: (Continued)
NT3T71 Maintenance Interface pack switch settings
Baud Rate
2400
4800
9600
19200 (Applies to the AB and later versions of the pack)
•
•
August 2006
Note 1: Settings: 1 = ON, 0 = OFF, - = NOT APPLICABLE.
Note 2: Eight data bits can be input and output by serial data interface (SDI)
hardware. The parity bit is not used. One stop bit is used for all settings except
110 baud, which selects two stop bits. The DMS-10 system software handles
OUTPUT and INPUT streams according to how the SDI port is assigned in the
DMO field as follows:
SDI port assigned to TTY (terminal equipment or terminal program):
- OUTPUT: the highest order bit (8) is forced in software to space (0).
The remaining seven bits represent the ASCII character. Thus, the
configuration settings of the terminal or terminal program should be:
7 bits data, space parity, and 1 stop bit.
Alternatively, a terminal setup of 7 bits, mark parity, and 1 stop bit can be used if
the terminal ignores parity. Consult an operator's manual for the terminal or
program if necessary. The SDI does not support an extended ASCII character set
on devices capable of displaying extended ASCII when the eighth bit is set to
mark (for example, interfacing to DOS-compatible PCs or terminal programs).
- INPUT: eight bits are input and echoed; the highest order bit is
ignored by software. This does not affect terminal settings.
SDI port assigned for applications that use an eight-bit data stream (that is,
MDR, SCCS, SMDI). These applications are non-ASCII based and the
equipment outputs and inputs 8 data bits.
- OUTPUT: all eight bits are transmitted
- INPUT: all eight bits are received and processed
At baud rates above 1200, caution should be used when
Note:
interfacing with equipment other than man-machine interface equipment.
The rate of data transfer associated with machine-machine interfaces can
exceed the buffer capacity of the I/O system, which can result in loss of
data.
For Generic 602.20
Switch settings for printed circuit packs
Switches
1 2
0 0
0 1
0 0
1 0
08.01
3 4
1 0
0 0
0 0
0 0
NTP 297-3601-316
2-46