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342-86400-445PS
Issue
4.0
October
2006
Page
41
Copyright
GE Multilin Inc. 2002
SIGNALING PARAMETERS
Signaling Modes
Signaling modes supported by the 86445-31 FXS unit are Loop Start (LS),
Ground Start (GS) and Private Line Automatic Ringdown (PLAR).
Battery Voltage
The Internal Battery source provides:
-28V
±
0.25V or -56V
±
0.5V
The External Battery working limits are: -21V to -58V
Line Current
The maximum Line Current limited by current setting resistors in 10 mA steps is:
20 mA
±
2mA to 50 mA
±
5mA
External Circuit Resistance
The maximum total External Resistance is:
2000
Ω
@ -56V and 20mA
600
Ω
@ -28V and 20mA
Internal Resistance
The Internal Resistance for Tip-to-Ground is: 120
Ω
+ 4V/I(loop)
The Internal Resistance for Ring-to-Battery is: 120
Ω
+ 4V/I(loop)