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Figure 18. Disconnect tone table.WellGate 2680 supports an alternative feature to release FXO port by detection LoopCurrent Drop signal. Go to Advanced <strong>Co</strong>nfiguration System Setting DisconnectSignal Detection to select Loop Current Drop feature. Once calling user drop this call,PSTN or PABX may drop Loop Current signal for about 300 msec (default setting) toinform FXO interface. To detect Loop current drop duration can be changed. See Figure19. Go to Advanced <strong>Co</strong>nfiguration System Setting Disconnect SignalDetection to select Loop Current Drop feature and Current Drop Time. This featuredepends on the PSTN switch or PABX you are using.Figure 19. Loop Current Drop detection at FXO18<strong>Welltech</strong> Technology <strong>Co</strong>., <strong>Ltd</strong>. Released Version 1.0
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