User manual

VOPTech Document Four Channel’s GSM VoIP Gateway

f3 is the tone #3 frequency (300Hz-3000Hz)

f4 is the tone #4 (300Hz-3000Hz)

p1 is the attenuation index for f1, 0~31(0=3dB, -1dB increments)

p2 is the attenuation index for f2, 0~31(0=3dB, -1dB increments)

p3 is the attenuation index for f3, 0~31(0=3dB, -1dB increments)

p4 is the attenuation index for f4, 0~31(0=3dB, -1dB increments)

For example, the tone definition for a tone of 450Hz with a cadence of 700 ms on and

1000 ms off is 1,0,700,1000,0,0,0,0,450,0,0,0,20,0,0,0

3.3.6 GSM Caller ID Anonymous

Some GSM ISP allows the caller disable it phone number, it must GSM ISP supported;

3.3.7 GSM Band

GoIP4 Supported quad GSM bands;

Note: About GSM bands supported, it base as which model GSM module we was used, some old

GoIP gateway just supported two bands, so it will different at differ batch’s GoIP devices;

3.3.8 GSM ISP

When GoIP searched more ISP signaling it can use, GoIP will show you a GSM ISP list, you

can choice any one ISP and the GoIP will lock itself just register to your choice one;

3.3.9 Auto Reboot

This option enable GoIP4 auto reboot each day, GoIP4 will auto reboot itself at Reboot

Time. If meet a current called, the action will auto delay after the call finish.