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553-3011-100 Standard14.00 January 2002
NTAK02 SDI/DCH card
The optional SDI/DCH card provides a maximum of four serial I/O ports,
which are grouped into two pairs:
•port 0 and port 1
and
•port 2 and port 3
Ports 1 and 3 may be configured as DCH or ESDI. Ports 0 and 2 may only be
configured as SDI. Each pair is controlled by a switch, as shown in Table77.
In the U.K, DPNSS (Digital Private Network Signalling System) can replace
the DCH function.
Table 7 7
Switch settings
Port 0 Port 1 SW 1-1 SW 1-2
SDI DCH/DPNSS OFF OFF
SDI DCH/DPNSS OFF ON
—ESDI ON ON
Port 2 Port 3 SW 1-3 SW 1-4
SDI DCH/DPNSS OFF OFF
SDI DCH/DPNSS OFF ON
—ESDI ON ON