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Figure 10
-
1: Ring Signaling Types
•
Continue to operate normally from settings stored in their non
-
volatile memory
•
When two Ringers are installed in a Ringer Chassis, they continue to provide 1 + 1 redundant (duplex) operation
Types of Ringing
QS820 Ringers can be configured to provide one of three types of ringing: Battery Backed, Ground
Backed, and Ground Backed
-
no dc. Ringing type is selected by selecting dc Offset polarity and by
enabling or disabling dc Offset.
dc Offset polarity is set by the J12 Ringer Chassis jumper or external connection. dc Offset may be
disabled via controller setting if desired.
Ring Return tied to
VBUS+ (Tip wire)
Ring
-
48Vdc
(VBUS
-
)
Ground
(VBUS
-
)
Vol
ta
ge
Ring
(Ring wire)
Ring Return
tied to VBUS+
(Tip wire)
-
48Vdc
Ground
(VBUS
-
)
Vol
ta
ge
Ring
(Ring wire)
Ring Return
tied to –
48
Vdc
(Tip wire)
-
48Vdc
(VBUS
-
)
Ground
(VBUS
-
)
Vol
ta
ge
Содержание CPS6000
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