User manual

VOPTech GoIP User Manual

Click “English” on the upper right corner of the setting page. Then, the setting page will

display all info in English. But the shortcut will not change the language of the setting page

when logged in next time.

3.3.2 Time Zone and Time Server

This item displays the adjusted time according to the selected time zone. The gateway receive

time and date information from the server through the Network Time Protocol and the time

difference will be automatically adjusted. For example, the pacific standard time (PST) is

GMT-8 and the pacific daylight time (PDT) is GMT-7.

The time zone indicates the zone where the gateway is used. You need to enter the correct

time zone, so that the time of the caller ID and charging information can be displayed

correctly. The time server is the address of the server that obtains the network time through

the Internet. The default time server is timekeeper.isi.edu.

3.3.3 DTMF Minimum Detection Interval

This parameter is used to set the minimum interval of two DTMF signals. Packets may be lost

during the data transmission over the GSM. As a result, a DTMF may be incorrectly identified

as two or multiple identical DTMFs when detected by the GoIP. The problem of repeated code

can be solved effectively through the modification of the parameter.

This parameter value ranges from 60ms to 120ms and the default value is 80ms. When the

value of this parameter is increased properly, the repeated DTMF can be avoided efficiently.

However, the packet loss may also be caused.

3.3.4 Automatic Setting

If the service provider provides the automatic setting, you can select “Enable” to start the