User manual

z In the “Incoming Dial Plan Configurations” settings:
 “Inbound number” is the leading digits of the dialing number.
 “Length of Number“ has two text fields need filled: “Min Length” and “Max Length” is the
min/max allowed length you can dial.
 “Delete Length” is the nuber of digits that will be stripped from beginning of the dialed
number.
 “Add Digit Number” is the digits that will be added to the beginning of the dialed number.
 “Destination Tele port” is “Tel-port”; this is for local dial plan setting phone number.
4.5 VoIP Advanced Configuration
Smart-QoS (N Series VoIP Gateway Only):
If this function is enabled, when VoIP call is occurred, the other data will be automatically reduced
traffic which across the internet in order to guarantee the voice bandwidth.
Silence Compression:
If this function is enabled, when silence is occurred for a period of time, no data will be sent across the
network during this period in order to save bandwidth.
DTMF Relay:
After the VoIP call is connected, when you dial a digit, this digit is sent to the other side by DTMF
tone. There are two methods of sending the DTMF tone. The first is “in band”, that is, sending the
DTMF tone in the voice packet. The other is “out band”, that is, sending the DTMF tone as a signal.
Sending DTMF tone as a signal could tolerate more packet loss caused by the network. If this
selection is enabled, the DTMF tone will be sent as a signal.
Codec option:
The Codec is used to compress the voice signal into data packets. Each Codec has different bandwidth
requirement. There are four kinds of Codecs, G.723, G.729, G.711_u and G.711_A. The default value
is G.723.