Nortel Networks NN43001-301 manual NT5D12 switch settings, General Purpose Switches, On SF, On AMI

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	OFF - B8ZS
	Mode	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

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