Nortel Networks Circuit Card 311 - Manual (Page 928)

928 NTAK79 2.0 Mb PRI card
NTAK79 switches
The NTAK79 card incorporates four on-board dip switches. The tables that
follow provide information on the various settings and related functions of
these switches.
Note: The ON position for all the switches is towards the bottom of the
card. This is indicated by a white dot printed on the board adjacent to
the bottom left corner of each individual switch.
Figure 278
NTAK79 card with switch locations
Switch SW1 - DCHI Configuration
This switch enables/disables the on-board DCHI and sets the operating
mode of the DCHI. DPNSS1 mode is supported on an NTAK79BC. For all
other countries that do not use DPNSS, use Q.931 mode.
Table 379
Switch SW1
Switch Down (On) Up (Off)
SW 1-1 enable DCHI disable DCHI
SW 1-2 DPNSS1/DASS2 Q.931
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
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