Xblue Networks X-44 - Manual (Page 77)

Codec Settings:
A Codec is a coding and decoding protocol that allows two devices to transmit information between them
using an agreed upon protocol. A commonly used codec is G.711, which has no compression and delivers
the best sound reproduction, therefore, it uses the most bandwidth. The X-44 telephone uses three
different Codecs,
µ-law (pronounced MU-Law) used in the United States, a-law used in most European
countries, and G.729a, which is used universally throughout the world.
Once the codec is determined, it is important set the Packet Time (how often, in milliseconds, the
payload, amount of information, should be sent between devices.
Codec G.711 µ-law
Pronounced “Mu-Law” (like “new” with an M) and generally written µ-law is the algorithm used by
telephone communications products in the United States. This algorithm allows us to send
communications signals down long expanses of wires with very little distortion.
Codec G7.11 a-law
The a-law algorithm is used in many European telecommunications products. This algorithm also
allows communication signals to be send down long expanses wires with very little distortion but
a-law does not have as many different frequency ranges that
µ-law , so the signal decreases faster
over a shorter distance.
Codec G.729a
G.729a is a compression protocol, which can be used in any country. It is used to minimize the size
(amount) of the data which is passed between devices.
Packet Time - G.711u, G.711a, G.729a
The packet time is the amount of time that elapses between data packets being sent. These timers
should remain at default, which is 20 (ms).
Call Blocking Settings:
Using a calls’ inbound Caller ID the X-44 telephone allows you to block up to 10 different telephone
numbers, each can contain up to 31 digits. When using Call Blocking Settings, it is important to use as
many digits of the number to be blocked as possible. This will avoid inadvertently blocking large groups
of numbers. For example, if you only enter “913”, then all calls with the area code 913 (Kansas) will be
blocked.
• Enable Call Block: - Click on the Check Box to enable all 10 of the call Blocking Entries.
• Caller Blocking Entry x: (x = 0 - 9: - Enter the telephone numbers that you want to block.
Remember to use as much of the telephone number as you can.
Prefix Entry Settings
This allows each telephone the ability to evaluate any digits dialed before the X-44 processes the digits
dialed. When a dialed number matches an “Entry Pattern” in the X-44, the telephone can be
programmed to add digits to the number dialed or replace the dialed digits with a new set of digits.
• Prefix Entry x Type: (x = 0 - 9) - Enter the dialed digit or digits that will be evaluated by the X-44.
If a match is found the X-44 can “Insert” one or more numbers such as a “1” for a long distance
call or the X-44 can actually replace the dialed number with a different number.
• Prefix Entry x Pattern: Enter the number or numbers to be evaluated before sending the call to the
X-44 system for processing.
Web Programming
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