Memory,Storage and CPU capacity Page21 of 544
Option11C and 11C Mini TechnicalReference Guide
If the default numbering plan does not suit this system’s needs, you can
change it using the procedures Chapter 22 of the Option 11C Planning and
Installation (553-3021-210) or Appendix A of the Option 11C Mini Planning
and Installation (553-3021-209).
SDI ports
There are three pre-programmed SDI ports on Option 11C and 11C Mini
systems. The NTDK20 SSC or NTDK97 MSC provides TTY ports 0, 1, and
2. All three SDI interfaces can be used as either modem or maintenance ports
for TTY terminals.
Tone services
The SSC/MSC provides 30 channels of tone and cadence transmission to the
system.
The SSC/MSC also provides tone detection. Units 0-7 can be configured to
support DTR/XTD. Units 8-15 can also be configured to support DTR/XTD
Optionally, units 8-11 can be configured to support other tone detection
functions in lieu of DTR/XTD on units 8-15. These other tone functions
include one of MFC/MFE/MFK5/MFK6/MFR.
LD56 contains default tables used for tone and cadence generation.
Benefits of pre-programme d data
The main benefit of pre-programmed data is that it simplifies installation and
activation procedures. Table5 compares how a task would be performed
using pre-programmed data and how it would be performed without pre-
programmed data.
Table 4
LD56 tone and cadence data
Pre-configured TDS/DTR data
TDS loop Channels 1-30
DTR or XTD Card 0, units 0-7