t the same time and
restored all conditions to normal. Under the present condition the
operation of the private magnet will perform its usual function and move
the side switch of the connector into its third position.

_Third Position of Side Switch._ When the side switch of the connector
moves to its third position, it, as usual, cuts the talking circuit
straight through from the vertical and the rotary sides of the trunk
leading from the previous selector to the outgoing terminal of the
subscriber's line, which may be traced upon Fig. 396 back through the
line switch, shown in Fig. 389. Several things are to be noted about the
talking circuit so established: First, the inclusion of the condensers
in the vertical and the rotary sides of the connector circuit. The
purpose of this will be referred to later. Second, the inclusion in this
circuit at the connector of a pair of normally closed contacts in the
ringing relay. It may be said in passing that the ringing relay
corresponds exactly in function to a ringing key in a manual
switchboard. Third, the talking circuit leading from the connector to
the called subscriber's line passes on one side through the springs _24_
and _25_ of the bridge cut-off relay of the line switch, which is shown
in Fig. 389. These springs are normally open and would prevent the
completion of the talking circuit but for the fact that the bridge
cut-off relay of the line switch is energized over the private wire
leading to the connector bank and then through the connector wiper to
the third side switch wiper which, at this time, is in its third
position. The talking circuit is thus complete. The operation of this
bridge cut-off relay on the line switch has not only completed the
talking circuit but it has also opened the circuit of the trip magnet of
the line switch so as to prevent the operation of the trip magnet by the
subscriber on that line in case he should attempt to make a call during
the interval between the time when his line was connected with by the
connector and the time when he answers the call.

The third wiper of the connector side switch when moved into its third
position, puts the ground on all of the private bank contacts of the
line chosen and thus guards that line against connection by others, as
already described. It also operates the bridge cut-off relay of the line
switch as just mentioned.

The fourth wiper of the side switch, when moved into its third position,
establ