Nortel Networks NN43001-301 - Manual (Page 145)

NT5D12 switch settings 145
Note in all cases - If a QPC720 card is being replaced by a DDP card, the
D-channel Handler or MSDL can be either reconnected to the DDP card, or
removed if an onboard NTBK51AA DDCH card is used.
NT5D12 switch settings
The NT5D12 card is equipped with 6x2 sets of DIP switches for trunk
parameters settings for port0 and port1 respectively. Additionally, the
NT5D12 card is equipped with one set of four DIP switches for the Ring
Ground setting and one set of eight DIP switches for the D-channel Handler
parameters setting.
The DIP switches are used for setting of default values of certain
parameters. The general purpose switches are read by the firmware which
sets the default values accordingly.
The following parameters are being set by the DIP switches. Factory setups
are shown in bold.
General Purpose Switches
A per-trunk set of four DIP switches provides the default setting for
operational modes. Switch set S9 is used for Trunk 0. Switch set S15 is used
for Trunk 1. Refer to
Table 55 "General purpose switch settings" (page 145) ’.
Table 55
General purpose switch settings
Switch Description S9/S15 Switch Setting
1 Framing Mode OFF - ESF
ON - SF
2 Yellow Alarm Method OFF - FDL
ON - Digit2
3 Zero Code Suppression
Mode OFF - B8ZS
ON - AMI
4 Unused OFF
Trunk interface switches
Transmission Mode
A per-trunk switch provides selection for T1 transmission. See Table 56
"Trunk interface transmission mode switch settings" (page 146) .
Nortel Communication Server 1000
ISDN Primary Rate Interface Installation and Commissioning
NN43001-301 02.03 Standard
Release 5.5 7 December 2007
Copyright © 2003-2007, Nortel Networks
.