Nortel Networks Circuit Card 311 - Manual (Page 986)

986 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 415
"Settings for the DCHI dip switch (SW1)" (page 986) .
Table 415
Settings for the DCHI dip switch (SW1)
Switch Function On Off
S1-1 — — —
S1-2 F/W Mode DPNSS DCHI
The NTAK93 DCHI daughterboard can be operated in two separate modes
as defined by an on-board dip switch. It can operate in a standard DCHI
mode common to most ISDN standard countries. It can also operate in a
U.K. specific mode using the DPNSS format. The DDCH supports only a
single port which directly interfaces to the PRI motherboard.
Table 416
Settings for the DCHI dip switch (SW1)
Switch Function On Off
S1-1 — — —
S1-2 F/W Mode DPNSS DCHI
The NTAK93 DCHI daughterboard can be operated in two separate modes
defined by an on-board dip switch. It can operate in a standard DCHI mode
common to most ISDN standard countries. It can also operate in a DPNSS
mode, which is not supported at this time. The DDCH supports only a
single port which directly interfaces to the PRI motherboard. See
Table 417
"Settings for the DCHI dip switch (SW1)" (page 986) .
Table 417
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.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
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