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Page 228 of 544 SDI ports
553-3011-100 Standard 14.00 January 2002
SDI ports are found on the SSC card, the optional TDS/DTR card, and the
optional SDI/DCH card. An additional SDI port is located on the Fiber
Receiver card to allow remote TTY access.
The possible Option 11C SDI port configurations are summarized in
Table 72.
System controller cards
The NTDK20 Small System Controller card (used with Option 11C), and the
NTDK97 MSC card (used with Option 11C Mini) are each equipped with
three SDI ports.
Each port can be used to connect a modem or terminal to the system. If
connection to a terminal is desired, an A0378652 NO modem (NULL modem
without hardware handshaking) is required.
For the Option 11C, the SDI port connector is located at the bottom rear of
the cabinet next to the connectors to the cross connect terminal. (An NTBK48
three-port cable is required to connect to system equipment.) Refer to
Figure 25 on page 229.
Table 72
SDI Port configurations
Circuit Card
Number of
Ports
DTE DCE RS232 RS422
SSC
NTDK20
3 Ye s No Port 0 No
TDS/DTR
NTAK03
2 Ports 0/1 No Ports 0/1 No
SDI/DCH
NTAK02
4 Ports 0/1/
2/3
Ports 0/1/
2/3
Ports 0/1/
2/3
Ports 1/3
NTDK23
Fbr Rcvr card
1 Ye s No Yes No
NTDK25 and
NTDK80
Fbr Rcvr card
1 Ye s No Yes No