Avaya MCC1, Установка и обновления

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Install Additional Hardware
Administer TN464GP/TN2464BP with Echo Cancellation
SI Installation and Upgrades 599
June 2004
Administer TN464GP/TN2464BP
NOTE:
You do not need to busyout the circuit packs to modify the settings. But the modified
settings do not take effect until either the port is busied out or the scheduled maintenance
runs.
1
Type display system-parameters customer-options and press Enter. On screen 2 verify that
the
DS1 Echo Cancellation?
field is set to y. If not, contact your representative as this
must be set by the license file.
2
Type [
add | change
]
trunk-group
[
next | number
] and press Enter. See Figure 232, Trunk
Features screen, on page 600.
3
On Trunk Features, screen 2, set the DS1 Echo Cancellation? field to y.
4
Type [
add | change
]
ds1 UUCSS
and press Enter. See Figure 233, DS1 Circuit Pack screen, on
page 600.
5
On the DS1 Circuit Pack screen, set the
Echo Cancellation?
field to y.
When set to y, 2 new fields display:
EC Direction:
and
EC Configuration:
.
— If you know the echo is coming into DEFINITY, keep the default setting for the
EC
Direction:
field of
inward
.
— If you know that the distant party is hearing echo that originates in DEFINITY or its line
side stations or equipment, set the
EC Direction:
field to
outward
.
— Keep the default setting for the
EC Configuration:
field.
6
Test the voice quality on a telephone connected through the TN464GP or TN2464BP circuit packs
and known to have echo to see if the echo was eliminated.
7
If the echo still exists, set the
EC Configuration:
field to one of the other available settings,
then test the voice quality. These settings provide help for the following scenarios:
— Setting 1 rapidly minimizes echo when first detected, regardless of the loudness of the
talker’s voice.
NOTE:
Settings 1 and 4 have the same EC settings except that Setting 1 introduces 6 dB of loss.
— Setting 2 minimizes speech clipping, but it takes a fraction of a second longer for the echo
to fade.
— Setting 3 eliminates speech clipping, but a strong echo may take 2 or 3 seconds to fade.
— Setting 4 minimizes extremely strong echo, very hot signals, or excessive clipping or
breakup of speech from a distant party. It reduces speech clipping but may allow slight
residual echo or more background noise.
8
If after trying all these settings, the echo still exists, contact technical support. For telephone
numbers, go to
Avaya Support Centre and select ONLINE SERVICES, then select - Contact Us.