SETTINGS
SETTINGS > CALLING > ALE
246 E
NVOY™ TRANSCEIVER REFERENCE MANUAL
ALE Call Weighting
The ALE Call Weighting entry weights the LQA score of ALE channels for data or
voice.
When the quality of a channel is tested it is given an LQA score. The ALE Call
Weighting entry enables you to weight the scoring process according to the use of
the transceiver for voice and data communication. For example, if the transceiver is
used to make voice calls, you would select Mostly voice.
When Lowest acceptable is selected, the transceiver attempts a call on the channel
with the lowest frequency (with an LQA score above the set threshold), then attempts
the channel with the next higher frequency and LQA score etc, until a link is
established. In some situations where propagation distances may be less than a few
hundred kilometres, weighting the LQA scores in this way increases their
effectiveness.
Available values: Data only, Mostly data, Data and voice, Mostly voice, Voice only,
Lowest acceptable
Default value: Mostly voice
ALE Golay
The ALE Golay entry sets the value of the Golay threshold used in Golay testing.
ALE control information is sent and received in blocks of data called ALE words.
After a word is received, BER tested and accepted, the transceiver performs a Golay
test to check it for errors, and correct it if necessary.
The number of error bits per word indicates the quality of the channel used to transmit
the word. Golay testing can detect and correct up to three error bits per ALE word. It
can also detect four error bits, but is not guaranteed to correct all four. Note that
excessive errors can sometimes create false readings.
The ALE Golay entry enables you to specify the number of errors that will be
tolerated and corrected in this test, which indicates the quality of the channels on
which you are prepared to accept calls.
Range: 0 to 4
Default value: 2
CAUTION: It is recommended that this entry is not altered from the default setting.
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