User's Manual

Table Of Contents
2-50
BreezeACCESS Version 4.3 Operations and Administration
Manual Revision: 3.0
can be conducted by the SUs associated with this AU. If the number
of active voice sessions reaches this number, any additional SU
trying to initiate a voice session shall not get a dial tone. As this
value increases, voice quality may deteriorate as more users share
the same bandwidth for voice sessions.
The selection range is from 0 to 50.
The default value is 12.
Transmit Antenna Applicable only to single box (SU-R, SU-I/ID
and AU-I/ID) units. Displays which antennas are used for
transmission. Single box units support transmit antenna diversity
(2 antennas). During reception, a BreezeACCESS unit that is
connected to two antennas dynamically selects the antenna where
reception is optimal. In contrast, if the transmit antenna diversity is
enabled, the unit selects the antenna from which it will transmit
before the actual transmission. It usually uses the antenna last
used for successful transmission. In installations where a model
that can support antenna diversity is connected to a single antenna,
Transmit Antenna Diversity should be configured to transmit only
from that single antenna. Available selections are:
Use Two Antennas
Use Antenna No. 1
Use Antenna No. 2
The default selection is Use Antenna No. 1.
Receive Attenuation Control (SU-A/E units) – Displays the
current attenuation introduced into the receiver circuits and allows
entry of a different attenuation value.
The available Receive Attenuation values are 0 dB (no attenuation),
10 dB and 25 dB. The effect of inserting such attenuation in the
receive circuit is equivalent to reducing the level of the received
signal (including both signal and noise) by 2 dB when selecting 10
dB attenuation and 12 dB when selecting 25 dB attenuation.
The default is 0 dB.
ACSE Parameters – The ACSE (Adaptive Circuit Switched
Emulation) Voice Scheduler is a proprietary enhanced air protocol
that provides guaranteed delay and jitter properties for voice
sessions by reserving specific time slots for each active telephone
call. The ACSE Voice Scheduler allows the delivery of high quality
voice, while maintaining the inherent efficiency of statistically
multiplexed packet based networks. If the ACSE Voice Scheduler is
enabled, an AU can support a higher number of good quality voice
sessions. The ACSE Voice Scheduler feature does not affect voice
NOTE:
A voice session is defined as a voice connection between an SU and an AU. A
session between two SUs that are served by the same AU is counted as two voice
sessions.