Nortel Networks Circuit Card - Manual (Page 109)

Option settings Page 109 of 906
Circuit Card Description and Installation
Ring ground switches
A set of four DIP switches selects which Ring lines are connected to ground
(see Table 19).
Table 19
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