Nortel Networks 311 Ring ground switches, DCH mode and address select switches

86 Option settings
A set of four DIP switches provides selection among three values for
receiver impedance. Use SW8 for Trunk0; use SW14 for Trunk 1 (see Tab le
17 "Trunkinterface impedance switch settings" (page 86)).
Table 1 7
Trunkinterface impedance switch settings
Description SW8/SW14 Switch Settings
75 off off on off
100 on off off on
120 off off off on
Ring ground switches
A set of four DIP switches selects which Ring lines are connected to ground
(see Table18 "Ring ground switch settings" (page 86)).
Table 1 8
Ring ground switch settings
Switch Description S2 switch setting
1Trunk 0 Transmit
off - Ring line is not grounded
on- Ring line is grounded
2Trunk 0 Receive
off - Ring line is not grounded
on - Ring line is grounded
3Trunk 1 Transmit
off - Ring line is not grounded
on - Ring line is grounded
4Trunk 1 Receive
off - Ring line is not grounded
on - Ring line is grounded
DCH mode and address select switches
One switch selects an on-board NTBK51AA D-Channel daughterboard
and an external MSDL/DCHI card. Four other switches provide the
daughterboard address (see Table19 "DCH mode and address select
switch settings" (page 87)).
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright© 2003-2008, Nor tel Networks
.