Yeastar Technology S20 - Trunk Status

S-Series IP PBX Administrator Guide
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Malfunction in FXS interface; please examine the relevant interface and module.
Trunk Status
Figure 13-2 Trunk Status
Table 13-2 FXO Trunk Status Description
FXO Trunk Status
The trunk is idle.
The trunk is busy in use.
No PSTN line plugged in FXO interface.
Malfunction in FXO interface; please examine the relevant interface and module.
Table 13-3 GSM/CDMA/3G Trunk Status Description
GSM/CDMA/3G Trunk Status
The trunk is idle, the icon shows the signal strength.
The trunk is busy.