Nortel Networks 553-3001-211 Settings for the Dchi dip switch SW1 Switch Function Off, Dpnss Dchi

Page 772 of 894 NTBK50 2.0 Mb PRI card

mode, which is not supported at this time. The DDCH supports only a single port which directly interfaces to the PRI motherboard. See Table 249.

Table 249

Settings for the DCHI dip switch (SW1)

Switch	Function	On	Off
S1-1	—	—	—
S1-2	F/W Mode	DPNSS	DCHI

Card-LAN interface

A Dual Port UART handles the functions of the serial ports for the Card-LAN serial link test port interface. The test interface is an asynchronous 4800 bps 8 bit connected to port A of the UART. The card-LAN interface is an asynchronous 19.2 kbps 9 bit start/stop connected to port B of the UART.

The connection to the test port is available at the backplane/MDF connector.

The signals at this port conform to the EIA RS-232C standard.

553-3001-211 Standard 2.00 September 2004