32
PRO SWITCHING SYSTEM

Figure 4-3. Rackmount Chassis Rear Ports.

4.2 Control Cards

Table 4-1. Control Cards

Model Description
SM701C SNMP 10BASE-T
SM702C VT100™
The control card coordinates all rack functions, communicates with other racks,
and communicates with the management PC. Each rack must have one control
card, inserted into the rightmost slot.
4.2.1 C
ONTROLS
• GANG: There are five gang switches: N, A, B, C, and D. When the key switch is
in the horizontal position, you can use these switches to change all lines in a
rack. If you press A, B, C, or D, the control card switches all lines in the rack to
that position. If you press N, the control card switches all lines in the rack to
the normal position. Use the NORM SET pushbutton to define the normal
position for all lines.
• NORM SET: This pushbutton sets the N gang switch. When you press this
button, the Pro Switching System stores the current switch settings of each line