When configured for IP/PSTN or 3G/PSTN operation the display defaults to indicate IP or radio operation. You can switch the display to show PSTN related information by using Menu M.

NO PSTN

SPT is not configured for PSTN operation.

GOOD

SPT is seeing 50V on the line and dial tone.

ERROR

SPT is not seeing/seeing a very low voltage on the PSTN line.

B

- PSTN line is in use by another device.
- The voltage of the line is/may be less than 20V. (B indicates Busy)

C

SPT is dialling the WebWay receivers. (C indicates Calling).

O

- SPT has made a connect PSTN call.
- Signals are being transmitted to the WebWay receivers. (O indicates On line).

T

SPT is checking the line for dial tone. (T indicates Tone).

I

SPT is checking the line for voltage. (I indicates Idle). Physical line is good.

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