... .723.1 5.3k/6.3k,G.729,G.711 A-Law,μ-Law audio codec algorithm Dynamic voice detection Echo cancellation ... by HTTP,FTP or TFTP. For each GT-P302,it can have 5-SIP account and one PSTN phone number,that means each phone ... keyboard of PSTN,On the monitor to get this phone's IP address,For example:010.010.010.101, Fill in the ...