User manual

Four-Channel GSM VoIP Gateway

Each tone listed above is defined in the following format:

nc, rpt, c1on, c1off, c2on, c2off, c3on, c3off, f1, f2, f3, f4, p1, p2, p3, p4

Where:

nc is the number of cadences

rpt is the repeat counter(0 - infinite, 1~n - repeat 1~n times)

c1on is the cadence one on (in milliseconds)

c1off is the cadence one off (in milliseconds)

c2on is the cadence two on (in milliseconds)

c2off is the cadence two off (in milliseconds)

c3on is the cadence three on (in milliseconds)

c3off is the cadence three off (in milliseconds)

f1 is the tone #1 frequency (300Hz-3000Hz)

f2 is the tone #2, frequency (300Hz-3000Hz)

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

3.3.5 GSM Caller ID Anonymous

Some GSM ISPs allow the caller to disable the phone number (caller ID) when making

outgoing calls. This feature must be supported by GSM ISPs.