User's Manual

Lucent Technologies — Proprietary
See notice on first page
18-28
401-660-100 Issue 11 August 2000
Alarm Collection and Reporting
■
RU down converter synthesizer out-of-lock.
If either of these alarm conditions occur, the RCC is informed.
For the PCS CDMA Minicell, the receiver unit alarm was reported as part of the
CTU transmit amplifier status message. Any failure occurring on both diversity
receive units would result in a critical alarm. Currently, RU and CTU alarms are
accurately reported at the ROP, but incorrectly reported in the "OP:ALARM,ALL"
or "OP:CELL-LAC" input command response. This feature will report the CTU
critical alarm, single receiver unit major alarm and double receiver unit critical
alarm separately on the display pages and the ROP.
A single receiver unit alarm indicates the loss of half the diversity pair and traffic
capacity limitation while the double receiver unit alarm indicates a total loss of the
receiver diversity pair. Most of all, it allows the multiple amplifier alarm (state 3 and
state 5) to be reported.
This feature will also provide a CTU/RU status page (new 2136 page) to display
the status of all CTUs/RUs at a single PCS CDMA Minicell. Because the receiver
unit alarm message from the alarm circuit does not pass the affected RU number,
the major (yellow background for single RU failure) and critical (red background for
double RU failure) indicators will be highlighted on the pair of diversity amplifiers.
Upon being informed of a single amplifier alarm, the technician has to check the
LED indicator at the Alarm Control Board's faceplate to determine which RU
causes a single receiver alarm. Furthermore, to facilitate amplifier maintenance,
the sector number and carrier number associated with the CTU and the sector
number associated with the RU pair must also be displayed. The display page
supports the configurations of 1 carrier-6 sectors, 1-3 carriers-3 sectors, 1-9
carriers-omni. The CTU/RU numbering will be based on the logical amplifier unit
number.
This feature provides the alarm reporting capabilities for each CTU and each pair
of the RU. These include new "OP:CELL-CTU" and OP:CELL-RU" input command
options, the modified "OP:ALARM,ALL" output report and spontaneous alarm
reports (REPT:CELL a ALARM SCANNING).
The RCG icon in the 2131 page are marked "uneq" for CDMA Cellular Minicell
and PCS CDMA Minicell. An RU (PCS CDMA Minicell Receive Unit)" icon reflects
the status summary of both down-converters/receive diversity pair based on the 2
RUs in the diversity receive paths of the PCS CDMA Minicell. A single receive
diversity alarm will be displayed with a yellow background to indicate the loss of
half the diversity pair and traffic capacity limitation while a double RU alarm will be
in a red background to indicate a total loss of the receive diversity pair.