Talkswitch 24-CA - Manual (Page 15)

T A L K S W I T C H I N S T A L L A T I O N 3
1.4 UNIT BACK PANEL
Figure 2: TalkSwitch 24-CA
Figure 3: TalkSwitch 48-CA/CVA
Line 3/Line 4 on Line 3/Line 4 is currently in use.
pulsing slowly Line 3/Line 4 caller is on hold.
flickering Line 3/Line 4 is ringing.
quick pulse Line 3/Line 4 is engaged by a device that
is sharing the line with TalkSwitch.
Line 3 and Line 4 lights apply to TalkSwitch models with four incoming
lines only. For more details on line light error codes, see 1.12 What the
flashing lights mean on page 27.
The PF box between E4 and L1/L2 represents power failure support. In the
event of a power failure or loss of power to TalkSwitch, extension 114 is
able to receive and make calls on Line 1.