Alvarion BreezeACCESS 4900 Примітка до випуску - Сторінка 7

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To enable proper management, all units in a cell (the AU and all SUs served by it) must

use the same VLAN ID - Management.

The VLAN ID – Management must differ from the Customer's VLAN ID - Data.

•

Upon upgrade to SW version 4.5 from a version 3.1 or lower the FTP Client IP Address and

Subnet Mask no longer exist as configurable parameters and the unit's IP parameters are used

instead. Upon downgrade from SW version 4.5 to version 3.1 or lower the FTP Client IP

Address of the unit is automatically set to the same value as the IP Address of the device. In

this case following warning message appears:

*** WARNING: Same 'Unit IP Address' and 'FTP Client IP Address'! ***

***

'FTP Client IP Address' ignored until change and reset!

After downgrade it is recommended changing the FTP Client IP Address to 1.1.1.3 and the

FTP Server IP Address to 1.1.1.4.

•

SNMP management was checked with SNMPC version 5.1.11e.

9. Limitations & Known Issues

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Sensitivity may change slightly as a function of frequency (+/-2dB).

•

Transmission power accuracy is +/-1dB above 8dBm @ antenna port (typical condition). At

lower levels the accuracy is +/-3dBm, never contradicting regulations. At very low levels the

use of ATPC may cause significant fluctuations in the power level of the transmitted signal.

When operating at such low levels, it is recommended to disable the ATPC Option in the SU

and to set the Transmit Power parameter to the average Tx Power level before the ATPC was

disabled.

•

In units operating in the 5.3 GHz band, the following rule must be met for full compliance with

FCC regulations:

For units with HW Revision B, frequency 5270MHz should not be used with a 20 MHz

bandwidth. For these units, the Transmit Power parameter in the AU, and the Maximum Tx

Power parameter in the SUs served by this AU, should not be set to a value above "17-

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