User's Manual

Menus and Parameters
2-63
BreezeACCESS 4.0 System Manual
configured before the Shared Key authentication mode can be used.
The Subscriber Unit must use the same WEP Key that is used by
the Access Unit.
The WEP Key is a string of 10 hexadecimal numbers.
The default for all 4 keys is a string of 10 zeros (no key).
Voice Parameters (Subscriber Units
with Voice Support Only)
The parameters in the Voice Parameters menu include the following
options:
! Volume – Sets the gain of the voice signal to the earphone.
Available range is 0 dB to -20 dB in 1 dB steps.
The default value is -3 dB.
! Echo Cancellation – Enables or disables the built-in echo
cancellation feature.
The default value is Enable.
! Voice Codec – Specifys the relative priority of the codecs. The units
support the following codecs:
" G723.1 (6.4 Kbps rate, 1:10 compression ratio)
" G729 (8 Kbps rate, 1:8 compression ratio)
" G711 Ulaw (64 Kbps, no compression, US standard)
" G711 Alaw (64 Kbps, no compression, European Standard)
" G729AnnexA (G729 with reduced complexity)
" G729wAnnexB (G729 with silence compression)
" G729Annex AwAnnexB (G729 with reduced complexity and
silence compression)
You can enter a list of one to seven codecs, specifying the relative
priorities to be offered during capabilities’ exchange according to the
H.323 standard. For example, enter 1 to always use the G.723.1
codec. Enter 2, 1, 3, 4 to set the priorities according to the following
order: G729, G723.1, G711µlaw, G711 Alaw.
The range is 1 to 7654321.
The default is 2134.
! Compression Efficiency – Specifys the number of voice frames to
be packed into one RTP (Real Time Protocol) frame. The higher the
NOTE:
It is recommended to change the WEP Keys periodically, to enhance system security.