4.000:DRV --> EV_PSTN_RING(SilenceCnt:860 ,PulseCnt:50 )
1.000:DRV --> EV_PSTN_RING(SilenceCnt:66 ,PulseCnt:50 )
User can see there are many values in each cycle of Rings, please read
the maximum value of each cycle (marked with red color). In this case the
value is about 858-861, we will suggest user to set silence value to be
900-1000. Please refer to
pstn –silence
command in next part.
Part III [pstn] command
Every 5 ms LAN Phone will detect PSTN signal, so the value input in command
represents real time length (ms)
÷
5.
Default Values:
usr/config$ pstn -print
Pulse Sample :50 = (250 ms)
Pulse Maximum :500 = (2500 ms)
Silence Sample :900 = (4500 ms)
Auto Detect Signal :ON
Silence Signal :Lo
Initial Detect Time :800= (4000 ms)
1. Pulse Sample:
Default value is 50 = 250ms.
pstn -pulse “value”
If user set pulse value as 50, which means when LAN Phone detected
50 times with Ring signal, it will determine that LAN Phone has incoming
call and display “PSTN INCOMING” message on LCD.
The less the value is, LAN Phone will be more sensitive about PSTN
incoming call detection, however, if LAN Phone has big electric noise, it will
also more easy to be determined noise as Ring signal erroneously.
2. Pulse Maximum:
Default value is 500 = 2500ms.
pstn -pulsemax “value”
This is to prevent wrong determination of Ring signal. If LAN Phone
detected 500 times (2500ms) of Ring signal, this value is obviously not
reasonable, which means the detection is not correct, and LAN Phone will
automatically rerun PSTN detection program and reset Auto Detect Signal
(please refer to item 5
pstn -signal
).
We will suggest user to set:
“
value = Ring time length(ms)
÷
5 + 500
”.
