Nortel Networks NN43001-301 - Manual (Page 147)

NT5D12 switch settings 147
Table 59
Ring ground switch settings
Switch Description S2 Switch Setting
1 Trunk 0 Transmit OFF - Ring line is not grounded
ON - Ring line is grounded
2 Trunk 0 Receive OFF - Ring line is not grounded
ON - Ring line is grounded
3 Trunk 1 Transmit OFF - Ring line is not grounded
ON - Ring line is grounded
4 Trunk 1 Receive OFF - Ring line is not grounded
ON - Ring line is grounded
DCH mode and address select switches
A set of eight DIP switches selects between an onboard NTBK51AA
D-channel daughterboard and an external MSDL/DCHI card. In the case
of an onboard NTBK51AA D-channel daughterboard, four of the switches
provide the daughterboard address. See
Table 60 "DCH mode and address
select switch settings" (page 147) .
Table 60
DCH mode and address select switch settings
Switch Description S3 Switch Setting
1-4 D-channel daughterb
oard
Address See Table 61 "NTBK51AA daughterboard
address select switch settings" (page 148)
5-7 For future use. OFF
8 External DCH or
Onboard DDCH OFF - MSDL or DCHI card
ON - Onboard DDCH daughterboard
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
.