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A large jitter buffer causes increase in the delay and decreases the packet loss.
A small jitter buffer decreases the delay but increases the packet loss. The size
of the jitter buffer depends on the condition of the network, which varies with
time. Typically the packet loss should be less than 10% for a good quality of
speech.
3.7 Tone Setting
The Tone Setting is for the Tone detecting. The call will be dropped if the pattern of
the tone from PSTN side is as same as the pattern in the disconnect tone table. The
same result for the Ring Back Tone. User could define the pattern of the disconnect
tone if the disconnect tone from PSTN side is not the standard tone. (see figure 3.7)
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Figure 3.7: Tone Setting
±
Disconnect Tone – Users could put the correct pattern of the disconnect tone in
this table. The call will be dropped if the tone from PSTN side is match with
these patterns. Users could have four tables for the disconnect tone.
±
Remote Ring Back Tone – User could adjust this table to help the FXSO
gateway to detect the Remote Ring Back Tone. There could be four tables for
the configuration.
3.8 Phone Book
The Phone Book configuration is only support the gateway in Peer-to-Peer mode.
Please refer the chapter 2 about the Peer-to-Peer mode. (see figure 3.8)
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Figure 3.8: Phone Book
±
Index – The list number of the Phone Book.
±
Name – The name for this contact number.
±
E164 – The dialing number for the calling side.
±
IP Address – The destination IP address for this phone number.
±
Port – The call signal port of the destination.
±
Drop – Support the drop function. Enable is for enable this drop function;
Disable is for disable this drop function. The Drop Prefix will drop the E164
number, which you had configured in the E164 table.
±
Insert – Support the insert digits function.
1. It will be the drop function if user enable the Drop Prefix function and
put nothing into the Insert Prefix table.
2. It will be the insert function if user disable the Drop Prefix function and
put the digits into the Insert Prefix table.
3. It will be the replace function if user enable the Drop Prefix function
and put the digits into the Insert Prefix table.
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±
Delete Date – If users want to delete the record from the table, enter the index
number first and press this button. The record will be deleted.
3.9 Prefix Configuration
The Prefix function is using the drop and inserts function (see figure 3.9).
Figure 3.9: Prefix configuration
±
Index – The list number of the Phone Book.
±
Prefix – The prefix number of the whole numbers that could be into this gateway
±
Drop – The drop function. Enable this function by the Enable button; Disable
this function by the Disable button.
±
Insert – The insert function. Users could enter the digits that you want to insert
in this number.
±
Add Data – Press this button if users fill the entire information table above.
±
Delete Date – If users want to delete the record from the table, enter the index
number first and press this button. The record will be deleted.
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This function is just like the Phone Book configuration. But it will make the drop and
insert function in the GK routed mode. All the numbers into this gateway will check
out the prefix table first and find out the destination in the Routing Table.
There is an example about the configuration, please follow up these steps.
1
Press the Prefix Configuration button to enter the configuration table (see figure
3.9)
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