s12-drop call observation.pdf
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The information in this document is subject to change without notice and describes only theproduct defined in the introduction of this documentation. This document is intended for the useof Nokia's customers only for the purposes of the agreement under which the document issubmitted, and no part of it may be reproduced or transmitted in any form or means without the
prior written permission of Nokia. The document has been prepared to be used by professionaland properly trained personnel, and the customer assumes full responsibility when using it.Nokia welcomes customer comments as part of the process of continuous development andimprovement of the documentation.
The information or statements given in this document concerning the suitability, capacity, orperformance of the mentioned hardware or software products cannot be considered binding butshall be defined in the agreement made between Nokia and the customer. However, Nokia hasmade all reasonable efforts to ensure that the instructions contained in the document areadequate and free of material errors and omissions. Nokia will, if necessary, explain issueswhich may not be covered by the document.
Nokia's liability for any errors in the document is limited to the documentary correction of errors.NOKIA WILL NOT BE RESPONSIBLE IN ANY EVENT FOR ERRORS IN THIS DOCUMENTOR FOR ANY DAMAGES, INCIDENTAL OR CONSEQUENTIAL (INCLUDING MONETARYLOSSES), that might arise from the use of this document or the information in it.
This document and the product it describes are considered protected by copyright according tothe applicable laws.
NOKIA logo is a registered trademark of Nokia Corporation.
Other product names mentioned in this document may be trademarks of their respectivecompanies, and they are mentioned for identification purposes only.
Copyright Nokia Corporation 2007. All rights reserved.
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Contents
Contents 3
List of tables 4
List of figures 5
Summary of changes 7
1 29 Drop Call Breakdown Observation 9
2 Counters of Drop Call Breakdown Observation 13
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List of tables
Table 1. Measurement description of Drop Call Breakdown Observation 9
Table 2. Counters of Drop Call Breakdown Observation 10
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List of figures
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Summary of changes
Changes between document issues are cumulative. Therefore, the latest document
issue contains all changes made to previous issues.
Changes made between issues 2 and 12
Updated fields of all counters have been updated.
Changes made between issues 12 and 11
New counter 029041 has been added.
Changes made between issues 11 and 1
New counters 029007-029040 have been added and counters 029000-029006
have been updated.
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1 29 Drop Call Breakdown ObservationDrop Call Breakdown observation collects statistics on the dropped calls. The
detailed data of drop is collected when the drop occurs after the
ASSIGNMENT_COMPLETE message. The focus of the observation can be
either the breakdown of counter DROP AFTER TCH ASSIGN or the breakdown
of counter CLEAR REQUEST SENT BY BSC ON TCH.
If the focus of the observation is breakdown of DROP AFTER TCH ASSIGN, the
observation data is reported when the TCH drop occurred between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/MSC. If
the focus of the observation is breakdown of CLEAR REQUEST SENT BY BSC
ON TCH, the observation data is reported when CLEAR_REQUEST message is
sent to MSC between the ASSIGNMENT_COMPLETE from BTS and
CLEAR_COMMAND from MSC messages.
The observation is activated on BSC level and drops are recorded per TRX. The
Drop Call Breakdown Observation data is stored to an observation report disk file
and sent to NetAct in an observation file.
Drop Call Breakdown Observation is optional.
Measurement description
Table 1. Measurement description of Drop Call Breakdown Observation
Measurement
Measurement ID
Measurement abbreviation
Drop Call Breakdown Observation
29
DC_BREAK
Product BSC
Product software release S11.5
Target name
Target description
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Table 2. Counters of Drop Call Breakdown Observation (cont.)
ADJ CELL LAC 4 029030
ADJ CELL ID 4 029031
RX LEVEL ADJ 4 029032
ADJ CELL PLMN ID 5 029033
ADJ CELL LAC 5 029034
ADJ CELL ID 5 029035
RX LEVEL ADJ 5 029036
ADJ CELL PLMN ID 6 029037
ADJ CELL LAC 6 029038
ADJ CELL ID 6 029039
RX LEVEL ADJ 6 029040
FOCUS OF BREAKDOWN 029041
Related topics
. Counters of Drop Call Breakdown Observation
. BSC Statistics Administration
. BSC Measurement Counters Displaying Program (FOXMEA)
. Performance Measurements
. Call Related DX Causes in BSC
. Drop Call Breakdown Observation
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2 Counters of Drop Call BreakdownObservation
Number
Name
Release
029000
BTS ID
S11.5
Description Identification of the BTS where the drop occurred.
Updated When the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Dependencies with other counters/
PI(s)
001202 - DROP AFTER TCH ASSIGN
Logical type Variable
Unit Integer number
Number
Name
Release
029001
RELEASE TIME
S11.5
Description Timestamp of the call release (dropped call).
Coded in BCD (Binary Coded Decimal)
Hundredths of seconds : byte
Seconds : byte
Minutes : byte
Hours : byte
Day : byte
Month : byte
Year : word
Updated When the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
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Number
Name
Release
029001
RELEASE TIME
S11.5
Dependencies with other counters/
PI(s)
001202 - DROP AFTER TCH ASSIGN
Logical type Variable
Unit Integer number
Number
Name
Release
029002
PHASE OUT
S11.5
Description BSC internal phase value of the call release (the phase of the callwhere the drop occurred). See Call Related DX Causes in BSC.
Updated When the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Dependencies with other counters/
PI(s)
001202 - DROP AFTER TCH ASSIGN
Logical type Variable
Unit Integer number
Number
Name
Release
029003
CAUSE OUT
S11.5
Description BSC internal cause value of the call release (the drop cause). See
Call Related DX Causes in BSC.
Updated When the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Dependencies with other counters/PI(s)
001202 - DROP AFTER TCH ASSIGN
Logical type Variable
Unit Integer number
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Number
Name
Release
029004
TRX ID
S11.5
Description Identification of the TRX where the drop occurred.
Updated When the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Dependencies with other counters/
PI(s)
001202 - DROP AFTER TCH ASSIGN
Logical type Variable
Unit Integer number
Number
Name
Release
029005
PHASE IN
S11.5
Description BSC internal phase value of the call establishment. See Call Related
DX Causes in BSC.
Updated When the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Dependencies with other counters/PI(s) 001202 - DROP AFTER TCH ASSIGN
Logical type Variable
Unit Integer number
Number
Name
Release
029006
CAUSE IN
S11.5
Description BSC internal cause value of the call establishment. See Call Related
DX Causes in BSC.
Updated When the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Dependencies with other counters/
PI(s)
001202 - DROP AFTER TCH ASSIGN
Logical type Variable
Unit Integer number
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Number
Name
Release
029007
TIMING ADVANCE
S11.5
Description Downlink timing advance.
Updated The timing advance value is an average from the last 4 (four) MS
reports received before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND from
MSC.
Logical type Average
Unit Integer number
Number
Name
Release
029008
DL RX LEVEL
S11.5
Description Downlink signal strength.
Updated The DL RX level value is an average from the last 4 (four) MS
reports received before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND from
MSC.
Logical type Average
Unit Integer number
Number
Name
Release
029009
UL RX LEVEL
S11.5
Description Uplink signal strength of the serving cell.
Updated The UL RX level value is an average from the last 4 (four) MS
reports received before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/MSC or before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND from
MSC.
Logical type Average
Unit Integer number
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Number
Name
Release
029010
DL RX QUALITY
S11.5
Description Downlink bit error rate value of the serving cell.
Updated The DL RX quality value is an average from the last 4 (four) MS
reports received before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND from
MSC.
Logical type Average
Unit Integer number
Number
Name
Release
029011
UL RX QUALITY
S11.5
Description Uplink bit error rate value of the serving cell.
Updated The UL RX quality value is an average from the last 4 (four) MS
reports received before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND from
MSC.
Logical type Average
Unit Integer number
Number
Name
Release
029012
DL FER
S11.5
Description Downlink frame erasure value of the serving cell.
Updated The DL FER value is an average from the last 4 (four) MS reports
received before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/MSC or before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND from
MSC.
Logical type Average
Unit Integer number
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Number
Name
Release
029013
UL FER
S11.5
Description Uplink frame erasure value of the serving cell.
Updated The UL FER value is an average from the last 4 (four) MS reports
received before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND from
MSC.
Logical type Average
Unit Integer number
Number
Name
Release
029014
DL LAST USED BITRATE
S11.5
Description The last bit rate used in downlink direction when the TCH drop
occurred.
Values:
0x05 = AMR HR speech, 7.4 kbit/s
0x06 = AMR HR speech, 6.7 kbit/s
0x07 = AMR HR speech, 5.9 kbit/s
0x08 = AMR HR speech, 5.15 kbit/s
0x09 = AMR HR speech, 4.75 kbit/s
0x0A = AMR FR speech, 12.2 kbit/s
0x0B = AMR FR speech, 10.2 kbit/s
0x0C = AMR FR speech, 7.95 kbit/s
0x0D = AMR FR speech, 7.4 kbit/s
0x0E = AMR FR speech, 6.7 kbit/s
0x0F = AMR FR speech, 5.9 kbit/s
0x10 = AMR FR speech, 5.15 kbit/s
0x11 = AMR FR speech, 4.75 kbit/s.
Updated When the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Logical type Variable
Unit Integer number
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Number
Name
Release
029015
UL LAST USED BITRATE
S11.5
Description The last bit rate used in uplink direction when the TCH drop
occurred.
Values:
0x05 = AMR HR speech, 7.4 kbit/s
0x06 = AMR HR speech, 6.7 kbit/s
0x07 = AMR HR speech, 5.9 kbit/s
0x08 = AMR HR speech, 5.15 kbit/s
0x09 = AMR HR speech, 4.75 kbit/s
0x0A = AMR FR speech, 12.2 kbit/s
0x0B = AMR FR speech, 10.2 kbit/s
0x0C = AMR FR speech, 7.95 kbit/s
0x0D = AMR FR speech, 7.4 kbit/s
0x0E = AMR FR speech, 6.7 kbit/s
0x0F = AMR FR speech, 5.9 kbit/s
0x10 = AMR FR speech, 5.15 kbit/s
0x11 = AMR FR speech, 4.75 kbit/s
Updated When the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Logical type Variable
Unit Integer number
Number
Name
Release
029016
SUDDEN DROP
S11.5
Description This counter indicates whether the last 4 (four) MS reports have
been completely lost or not.Values:
0 = at least 1 (one) of the last 4 (four) MS reports have been
received at least partly.
1 = all of the last 4 (four) MS reports are completely missing.
Counters 029007-029015 and 029017-029040 are updated with the
values from the last received MS report whenever this counter is
updated with value 1.
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Number
Name
Release
029016
SUDDEN DROP
S11.5
Updated When the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Logical type Variable
Unit Integer number
Number
Name
Release
029017
ADJ CELL PLMN ID 1
S11.5
Description PLMN ID of the strongest adjacent cell.
Updated The PLMN ID value is based on the last received MS report before
the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND from
MSC.
Logical type Variable
Unit Integer number
Number
Name
Release
029018
ADJ CELL LAC 1
S11.5
Description LAC of the strongest adjacent cell.
Updated The LAC value is based on the last received MS report before the
TCH drop occured between messages ASSIGNMENT_COMPLETE
from BTS and DISCONNECT from MS/MSC or before the TCH drop
occured between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Logical type Variable
Unit Integer number
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Number
Name
Release
029019
ADJ CELL ID 1
S11.5
Description Cell ID of the strongest adjacent cell.
Updated The Cell ID value is based on the last received MS report before the
TCH drop occured between messages ASSIGNMENT_COMPLETE
from BTS and DISCONNECT from MS/MSC or before the TCH drop
occured between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Logical type Variable
Unit Integer number
NumberName
Release
029020RX LEVEL ADJ 1
S11.5
Description RX level value of the strongest adjacent cell.
Updated The RX level value is based on the last received MS report before
the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND from
MSC.
Logical type Variable
Unit Integer number
Number
Name
Release
029021
ADJ CELL PLMN ID 2
S11.5
Description PLMN ID of the 2nd strongest adjacent cell.
Updated The PLMN ID value is based on the last received MS report before
the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or before the TCH drop occured between messagesASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND from
MSC.
Logical type Variable
Unit Integer number
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Number
Name
Release
029022
ADJ CELL LAC 2
S11.5
Description LAC of the 2nd strongest adjacent cell.
Updated The LAC value is based on the last received MS report before the
TCH drop occured between messages ASSIGNMENT_COMPLETE
from BTS and DISCONNECT from MS/MSC or before the TCH drop
occured between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Logical type Variable
Unit Integer number
NumberName
Release
029023ADJ CELL ID 2
S11.5
Description Cell ID of the 2nd strongest adjacent cell.
Updated The Cell ID value is based on the last received MS report before the
TCH drop occured between messages ASSIGNMENT_COMPLETE
from BTS and DISCONNECT from MS/MSC or before the TCH drop
occured between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Logical type Variable
Unit Integer number
Number
Name
Release
029024
RX LEVEL ADJ 2
S11.5
Description RX level value of the 2nd strongest adjacent cell.
Updated The RX level value is based on the last received MS report before
the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND fromMSC.
Logical type Variable
Unit Integer number
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Number
Name
Release
029025
ADJ CELL PLMN ID 3
S11.5
Description PLMN ID of the 3rd strongest adjacent cell.
Updated The PLMN ID value is based on the last received MS report before
the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND from
MSC.
Logical type Variable
Unit Integer number
Number
Name
Release
029026
ADJ CELL LAC 3
S11.5
Description LAC of the 3rd strongest adjacent cell.
Updated The LAC value is based on the last received MS report before the
TCH drop occured between messages ASSIGNMENT_COMPLETE
from BTS and DISCONNECT from MS/MSC or before the TCH drop
occured between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Logical type Variable
Unit Integer number
Number
Name
Release
029027
ADJ CELL ID 3
S11.5
Description Cell ID of the 3rd strongest adjacent cell.
Updated The Cell ID value is based on the last received MS report before the
TCH drop occured between messages ASSIGNMENT_COMPLETE
from BTS and DISCONNECT from MS/MSC or before the TCH drop
occured between messages ASSIGNMENT_COMPLETE from BTSand CLEAR_COMMAND from MSC.
Logical type Variable
Unit Integer number
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Number
Name
Release
029028
RX LEVEL ADJ 3
S11.5
Description RX level value of the 3rd strongest adjacent cell.
Updated The RX level value is based on the last received MS report before
the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND from
MSC.
Logical type Variable
Unit Integer number
Number
Name
Release
029029
ADJ CELL PLMN ID 4
S11.5
Description PLMN ID of the 4th strongest adjacent cell.
Updated The PLMN ID value is based on the last received MS report before
the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND from
MSC.
Logical type Variable
Unit Integer number
Number
Name
Release
029030
ADJ CELL LAC 4
S11.5
Description LAC of the 4th strongest adjacent cell.
Updated The LAC value is based on the last received MS report before the
TCH drop occured between messages ASSIGNMENT_COMPLETE
from BTS and DISCONNECT from MS/MSC or before the TCH dropoccured between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Logical type Variable
Unit Integer number
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Number
Name
Release
029031
ADJ CELL ID 4
S11.5
Description Cell ID of the 4th strongest adjacent cell.
Updated The Cell ID value is based on the last received MS report before the
TCH drop occured between messages ASSIGNMENT_COMPLETE
from BTS and DISCONNECT from MS/MSC or before the TCH drop
occured between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Logical type Variable
Unit Integer number
NumberName
Release
029032RX LEVEL ADJ 4
S11.5
Description RX level value of the 4th strongest adjacent cell.
Updated The RX level value is based on the last received MS report before
the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND from
MSC.
Logical type Variable
Unit Integer number
Number
Name
Release
029033
ADJ CELL PLMN ID 5
S11.5
Description PLMN ID of the 5th strongest adjacent cell.
Updated The PLMN ID value is based on the last received MS report before
the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or before the TCH drop occured between messagesASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND from
MSC.
Logical type Variable
Unit Integer number
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Number
Name
Release
029034
ADJ CELL LAC 5
S11.5
Description LAC of the 5th strongest adjacent cell.
Updated The LAC value is based on the last received MS report before the
TCH drop occured between messages ASSIGNMENT_COMPLETE
from BTS and DISCONNECT from MS/MSC or before the TCH drop
occured between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Logical type Variable
Unit Integer number
NumberName
Release
029035ADJ CELL ID 5
S11.5
Description Cell ID of the 5th strongest adjacent cell.
Updated The Cell ID value is based on the last received MS report before the
TCH drop occured between messages ASSIGNMENT_COMPLETE
from BTS and DISCONNECT from MS/MSC or before the TCH drop
occured between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Logical type Variable
Unit Integer number
Number
Name
Release
029036
RX LEVEL ADJ 5
S11.5
Description RX level value of the 5th strongest adjacent cell.
Updated The RX level value is based on the last received MS report before
the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND fromMSC.
Logical type Variable
Unit Integer number
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Number
Name
Release
029037
ADJ CELL PLMN ID 6
S11.5
Description PLMN ID of the 6th strongest adjacent cell.
Updated The PLMN ID value is based on the last received MS report before
the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND from
MSC.
Logical type Variable
Unit Integer number
Number
Name
Release
029038
ADJ CELL LAC 6
S11.5
Description LAC of the 6th strongest adjacent cell.
Updated The LAC value is based on the last received MS report before the
TCH drop occured between messages ASSIGNMENT_COMPLETE
from BTS and DISCONNECT from MS/MSC or before the TCH drop
occured between messages ASSIGNMENT_COMPLETE from BTS
and CLEAR_COMMAND from MSC.
Logical type Variable
Unit Integer number
Number
Name
Release
029039
ADJ CELL ID 6
S11.5
Description Cell ID of the 6th strongest adjacent cell.
Updated The Cell ID value is based on the last received MS report before the
TCH drop occured between messages ASSIGNMENT_COMPLETE
from BTS and DISCONNECT from MS/MSC or before the TCH drop
occured between messages ASSIGNMENT_COMPLETE from BTSand CLEAR_COMMAND from MSC.
Logical type Variable
Unit Integer number
DN0481217Issue 2-0 en
# Nokia Corporation 27 (28)
Counters of Drop Call Breakdown Observation
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Number
Name
Release
029040
RX LEVEL ADJ 6
S11.5
Description RX level value of the 6th strongest adjacent cell.
Updated The RX level value is based on the last received MS report before
the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and DISCONNECT from MS/
MSC or before the TCH drop occured between messages
ASSIGNMENT_COMPLETE from BTS and CLEAR_COMMAND from
MSC.
Logical type Variable
Unit Integer number
Number
Name
Release
029041
FOCUS OF BREAKDOWN
S11.5
Description Indicates to which counter the drop call breakdown observation is related.
Coding:
1 = breakdown of counter DROPS AFTER TCH ASSIGN
2 = breakdown of counter CLEAR REQUEST SENT BY BSC ON TCH
Updated When the focus of the observation is on the breakdown of the counter
DROPS AFTER TCH ASSIGN, this counter is updated with value 1 when
the counter DROPS AFTER TCH ASSIGN is updated.
When the focus of the observation is on the breakdown of the counter
CLEAR REQUEST SENT BY BSC ON TCH, this counter is updated with
value 2 when the counter CLEAR REQUEST SENT BY BSC ON TCH is
updated.
Dependencies with other
counters/PI(s)
001202 - DROP AFTER TCH ASSIGN, 002071 - CLEAR REQUEST
SENT BY BSC ON TCH, 057044 - DROP AFTER TCH ASSIGNMENT
Logical type Variable
Unit bytes
Related topics
. 29 Drop Call Breakdown Observation
. Call Related DX Causes in BSC
29 Drop Call Breakdown Observation
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