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Billion 800VGT Router
Codec Preference
A codec is a Coder-Decoder and is used for data signal conversion. The priority position sets the priority
of each codec; Priority 1 is the top priority.
G.729: This type of codec encodes and decodes the voice information into a single packet which reduces
the bandwidth consumption. 8kbps of bandwidth is needed.
G.711µ-LAW: This codec uses a basic non-compressed encoder and decoder technique. µ-LAW uses a
pulse code modulation (PCM) encoder and decoder to convert voice into a 14-bit linear sample.
64kbps
of bandwidth is needed.
G.711A-LAW: This codec uses a basic non-compressed encoding and decoding technique. µ-LAW
uses a pulse code modulation (PCM) encoder and decoder to convert voice into a 13-bit linear sample.
64kbps of bandwidth is needed.
Non-used: This option is only available for Priority 2 and 3.
It should be selected if no codec is to be
used in these priority settings.
Note: In the example screen shown above, the codec priority is assigned in the order as G.729 > G.711µ-LAW >
G.711A-LAW.
Speed Dial
The Speed Dial function is useful for storing frequently used telephone numbers. You can press a
number from 0 to 9 and the hash sign (#) on the phone keypad to call a speed dial number. For example,
to phone a speed dial number listed under 9, press keypad 9 then #.
Your router will automatically dial
the number listed in entry 9.
For examples:
If your friend Tim gives you a SIP URL as sip: 89755@192.246.69.223 then you can fill in
89755@192.246.69.223. as number 1 speed dial.
If your friend Felix gives you a SIP URL as sip: felix@iptel.org then you can fill in felix@iptel.org. as
number 2 speed dial.
If your friend Greg gives you an IP address "192.246.56.56" only, then you can fill in "192.246.56.56".
In some cases, when a user makes use of DDNS, you will have to fill in their domain name as well.
Volume Control
The Volume control setting helps you to adjust the voice level of the telephone to the most comfortable
listening level.
Press "-", the minus sign, to reduce either the microphone and/or the speaker's volume of your telephone.
Press "+", the plus sign, to increase either the microphone and/or the speaker's volume of your
telephone.
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Chapter 4: Configuration
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