PLANET IPX-1980 - Manual (Page 63)

Duration in the call logs is not real charged duration, if you need billing, PSTN
must support polarity reversal function, meanwhile, you must configure
relevance parameters of polarity reversal in trunk configuration for the IP PBX.
For now our IPX-1980 can only FSK caller ID mode.
5.3 Register Status
Check SIP/ IAX2 User, and SIP/IAX2 Trunk status. Click【Register Status】to display the
dialog as below:
5.4 System Info
Check OS version, firmware version and memory, etc from here.
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