User's Manual

2-64
BreezeACCESS 4.0 Operations and Administration
Manual Revision: 1.01
value of the Frames per Packet parameter, the higher are the delay
introduced (reduced quality) and the higher is the number of
simultaneous voice sessions that can be supported by the AU. There
is a separate setting for each of the voice codecs that are supported
by the unit.
The allowed range differs among codecs, in accordance with the
different packet sizes (30 ms for G723.1, 10 ms for G729 and 5 ms
for G711).
The valid values and default values are:
" G723 Frames Per Packet – Valid range 1-8, Default value is
2
" G729 Frames Per Packet – Valid range is 1-12, Default
value is 6. If upgrading from a previous version, this value
must be set to 6 if ACSE Option is enabled. (covers all G729
codecs, including G729Annex A, G729wAnnexB and
G729AnnexAwAnnexB)
" G711u-law Frames Per Packet – Valid range is 1-16,
Default value is 12
" G711A-law Frames Per Packet – Valid range is 1-16,
Default value is 12
! Voice Activity Detection – Enables or disables the use of Voice
Activity Detection (VAD). When the VAD algorithm is enabled,
silence intervals are identified. Therefore, only relevant information
is transmitted, using less bandwidth than during voice activity
intervals. This allows for a better overall utilization of the available
bandwidth. Voice Activity Detection is not applicable when using the
G711 codec. Voice Activity Detection is implemented automatically
in G729wAnnexB and G729 Annex A w Annex B (Annex B activates
the silence compression).
Available options are:
" Voice Activity Detection OFF.
" Voice Activity Detection G7231 (enable when using
G723.1 compression).
The default selection is Voice Activity Detection OFF.
Dialing Parameters (Subscriber
Units with Voice Support Only)
The parameters in the Dialing Parameters menu include the following
options:
NOTE:
When the ACSE Option is enabled, this parameter is not applicable and the default
value is always used.