call drop rate improvement subscriber perceived with msc timer changes
DESCRIPTION
Call Drop Rate Improvement Subscriber Perceived With MSC Timer ChangesTRANSCRIPT
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
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Call drop Rate ImprovementMSC timers T305 & T308 Tuning
Report
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
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INTRODUCTION› During a Mobile terminated call, if A party disconnects (hangs up after
finishing conversation), MSC sends a DISCONNECT message to the B party and initiates a supervision timer T305 waiting for RELEASE message from the mobile. If not received, T305 expires.
› MSC then sends RELEASE to B party and initiates a timer T308 waiting for RELEASE COMPLETE message. If not received, T308 expires.
› This is repeated once again.› If no response is received from the mobile yet, MSC initiates a CLEAR
command, releasing the resources.› Currently the values of T305 and T308 are set to 30 seconds in the
network ( high values)› With the current setting, BSC will send a CLEAR REQUEST to MSC
within this time period, which will be a drop call, mostly due to T200 timer expiry.
› It is to be emphasized that the above drop is not subscriber impacting, but affects TCH drop Rate statistics.
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
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T200 TimerWhen the BTS transmits a DL layer-2 frame on the air (e.g. an I-frame with an
embedded layer 3 message) the BTS starts the timer T200 and waits for the acknowledgement frame from the MS. The acknowledgement frame can be another I-frame sent by the MS in the UL (if the MS has to transmit a layer-3 DTAP message anyway) as well as RECEIVE READY (RR) (if there is nothing to be transmitted on layer 3). If the acknowledgement from the MS is not received within T200 the transmission of the layer 2 frame is repeated and T200 restarted. The total number of repetitions is restricted to N200, a fixed value specified by GSM which depends on the control channel types:
N200 (SDCCH)=23, N200(SACCH)=5, 200(FACCH/FR)=34, N200(FACCH/HR)=29
If T200 expires after the last layer 2 frame repetition the BTS sends an ERROR INDICATION with cause ‘T200 expired N200+1 times’ (followed by a RELEASE INDICATION) message to the BSC, which releases the associated resources.
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
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T305, T308 Functionality
When BSC receives “Clear CMD” message from MSC, BSC will start T3109, and after this time, Network will ignore the “ERROR INDICATION” message from BTS. So if we MSC can send “CLEAR COMMAND” before T200 expiry, by changing T305 and T308, then the drops which are not subscriber perceived but triggered due to T200 expiry will be ignored.
We can achieve this if: T305 + 2*T308 < (N200+1)*T200
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
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Proposal
› Hence, to reflect customer perception better, it was proposed to change the values of T305 and T308 Values to 2 and 1 respectively.
› An end to end impact check was carried out in the test bed and then the change was implemented in a pilot MSC.
› Based on the improvements noted in pilot MSC, It was decided to rollout the change in the network.
› The following slides show the impact of this change on the TCH drop rate in the network.
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
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© Ericsson AB 2010 | Ericsson Internal | Date:Dec-30-2010
Implementation Schedule
› The Rollout of MSCC Timer Tuning for T305 & T308 were was done as per the following schedule:
Date BSCs
Tuesday, December 21, 2010 MSC MS12, BSC16, BSC22, BSC60 and BSC61
Sunday, December 26, 2010 MSCs X27 - BSC25, BSCN8 and MS23 - BSC27 & BSC67
Monday, December 27, 2010 MSCs MS3 - BSC62, BSC63 and X17 - BSCN6
Tuesday, December 28, 2010 MSCs X31 - BSC28, X11 - BSC19, X09 - BSC65
Sunday, January 2, 2011MSCs MS13 - BSC21, BSC66, BSCN10, BSCN9, MS2 – BSC15, BSCN4, X29 – BSC26
Monday, January 3, 2011 MSCs X25 – BSCN5, MS11 - BSC17, BSC64, BSCN11, MS1 – BSCN7
Tuesday, January 4, 2011 MSCs X23 – BSC23, X21 – BSC24, X15 – BSC20
Wednesday, January 5, 2011 MSCs X19 – BSC18, XG3 – BSCN12
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
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Performance Impact Network Level
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
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Tch Drop
0.260.270.280.29
0.30.310.320.330.340.350.36
08/1
2/10
09/1
2/10
10/1
2/10
11/1
2/10
12/1
2/10
13/1
2/10
14/1
2/10
15/1
2/10
16/1
2/10
17/1
2/10
18/1
2/10
19/1
2/10
20/1
2/10
21/1
2/10
22/1
2/10
23/1
2/10
24/1
2/10
25/1
2/10
26/1
2/10
27/1
2/10
28/1
2/10
29/1
2/10
30/1
2/10
31/1
2/10
01/0
1/11
02/0
1/11
03/0
1/11
04/0
1/11
05/0
1/11
06/0
1/11
07/0
1/11
08/0
1/11
40000
50000
60000
70000
80000
90000
100000
TDR_NO TCH_DROP
Network Level_Tch Drop
Excellent improvement observed on Network Level Tch Drop Rate and numbers. © Ericsson AB 2010 | Ericsson Internal | Date:Dec-30-2010
Batch 7
Batch 8
Batch 6
Batch 5
Batch 1
Batch 2
Batch 3
Batch 4
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
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Tch Drop Reason
0
5000
1000015000
20000
25000
30000
3500040000
45000
50000
08
/12
/10
09
/12
/10
10
/12
/10
11
/12
/10
12
/12
/10
13
/12
/10
14
/12
/10
15
/12
/10
16
/12
/10
17
/12
/10
18
/12
/10
19
/12
/10
20
/12
/10
21
/12
/10
22
/12
/10
23
/12
/10
24
/12
/10
25
/12
/10
26
/12
/10
27
/12
/10
28
/12
/10
29
/12
/10
30
/12
/10
31
/12
/10
01
/01
/11
02
/01
/11
03
/01
/11
04
/01
/11
05
/01
/11
06
/01
/11
07
/01
/11
08
/01
/11
TDR_SS_NO TDR_QUAL_NO TDR_SUD_LOSS_NO TDR_UNKNOWN_NO
Network Level_Tch Drop Reason
© Ericsson AB 2010 | Ericsson Internal | Date:Dec-30-2010
Sudden loss,SS and quality drops improved, with significant contribution from Sudden drops
Batch 7
Batch 8
Batch 6Batch 5
Batch 1 Batch 2
Batch 3
Batch 4
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
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Erlang Minutes Per Drop
300
325
350
375
400
425
450
475
08/1
2/10
09/1
2/10
10/1
2/10
11/1
2/10
12/1
2/10
13/1
2/10
14/1
2/10
15/1
2/10
16/1
2/10
17/1
2/10
18/1
2/10
19/1
2/10
20/1
2/10
21/1
2/10
22/1
2/10
23/1
2/10
24/1
2/10
25/1
2/10
26/1
2/10
27/1
2/10
28/1
2/10
29/1
2/10
30/1
2/10
31/1
2/10
01/0
1/11
02/0
1/11
03/0
1/11
04/0
1/11
05/0
1/11
06/0
1/11
07/0
1/11
08/0
1/11
Erlang Minutes Per Drop
Network Level_Erl Minutes Between Drops
© Ericsson AB 2010 | Ericsson Internal | Date:Dec-30-2010
Excellent improvement observed in Erlang Minutes between drops on NW Level.
Batch 7
Batch 8Batch 6
Batch 5Batch 1
Batch 2
Batch 3
Batch 4
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
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Network_Call Success Rate
© Ericsson AB 2010 | Ericsson Internal | Date:Dec-30-2010
Consistent Improvement trend is noted
Call Success Rate
9999.0599.1
99.1599.2
99.2599.3
99.3599.4
99.4599.5
08/1
2/10
09/1
2/10
10/1
2/10
11/1
2/10
12/1
2/10
13/1
2/10
14/1
2/10
15/1
2/10
16/1
2/10
17/1
2/10
18/1
2/10
19/1
2/10
20/1
2/10
21/1
2/10
22/1
2/10
23/1
2/10
24/1
2/10
25/1
2/10
26/1
2/10
27/1
2/10
28/1
2/10
29/1
2/10
30/1
2/10
31/1
2/10
01/0
1/11
02/0
1/11
03/0
1/11
04/0
1/11
05/0
1/11
06/0
1/11
07/0
1/11
08/0
1/11
CSR
Batch 7
Batch 8
Batch 6
Batch 5Batch 1
Batch 2
Batch 3
Batch 4
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
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Network Level_Tch Erlang
© Ericsson AB 2010 | Ericsson Internal | Date:Dec-30-2010
On NW level, Traffic shows a reducing trend due to holiday season and has started to pick up.
TCH_ERL
300000
350000
400000
450000
500000
550000
60000008
/12/
1009
/12/
1010
/12/
1011
/12/
1012
/12/
1013
/12/
1014
/12/
1015
/12/
1016
/12/
1017
/12/
1018
/12/
1019
/12/
1020
/12/
1021
/12/
1022
/12/
1023
/12/
1024
/12/
1025
/12/
1026
/12/
1027
/12/
1028
/12/
1029
/12/
1030
/12/
1031
/12/
1001
/01/
1102
/01/
1103
/01/
1104
/01/
1105
/01/
1106
/01/
1107
/01/
1108
/01/
11
TCH_ERL
Batch 7
Batch 8
Batch 6
Batch 5Batch 1 Batch 2
Batch 3
Batch 4
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
Do not add objects or text in the footer area
BSC Level
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
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Tch Drop
0.1
0.2
0.3
0.4
0.5
0.6
0.7
08/
12
/10
09/
12
/10
10/
12
/10
11/
12
/10
12/
12
/10
13/
12
/10
14/
12
/10
15/
12
/10
16/
12
/10
17/
12
/10
18/
12
/10
19/
12
/10
20/
12
/10
21/
12
/10
22/
12
/10
23/
12
/10
24/
12
/10
25/
12
/10
26/
12
/10
27/
12
/10
28/
12
/10
29/
12
/10
30/
12
/10
31/
12
/10
01/
01
/11
02/
01
/11
03/
01
/11
04/
01
/11
05/
01
/11
06/
01
/11
07/
01
/11
08/
01
/11
BSC16
BSC19
BSC22
BSC25
BSC27
BSC28
BSC60
BSC61
BSC62
BSC63
BSC65
BSC67
BSCN6
BSCN8
Sum of TCH_DROP
Date
BSCName
BSC Level_Tch Drop (MS12, X27, MS23, MS3, X17, X31, X11, X09)
TCH DROP Rate improved in all BSCs© Ericsson AB 2010 | Ericsson Internal | Date:Dec-30-2010
Batch 1
Batch 2
Batch 3
Batch 4
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
Do not add objects or text in the footer area
Tch Drop
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
08/
12
/10
09/
12
/10
10/
12
/10
11/
12
/10
12/
12
/10
13/
12
/10
14/
12
/10
15/
12
/10
16/
12
/10
17/
12
/10
18/
12
/10
19/
12
/10
20/
12
/10
21/
12
/10
22/
12
/10
23/
12
/10
24/
12
/10
25/
12
/10
26/
12
/10
27/
12
/10
28/
12
/10
29/
12
/10
30/
12
/10
31/
12
/10
01/
01
/11
02/
01
/11
03/
01
/11
04/
01
/11
05/
01
/11
06/
01
/11
07/
01
/11
08/
01
/11
BSC15
BSC17
BSC18
BSC20
BSC21
BSC23
BSC24
BSC26
BSC64
BSC66
BSCN10
BSCN11
BSCN12
BSCN4
BSCN5
BSCN7
BSCN9
Sum of TCH_DROP
Date
BSCName
BSC Level_Tch Drop (MS13, MS2, X29, X25, MS11, MS1, X23, X21, X15, X19, XG3)
TCH DROP Rate improved in all BSCs© Ericsson AB 2010 | Ericsson Internal | Date:Dec-30-2010
Batch 5
Batch 6 Batch 7
Batch 8
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
Do not add objects or text in the footer area
Erlang Minutes per Drop improved in all BSCs.
BSC Level_Erl Minutes Between Drops (MS12, X27, MS23, MS3, X17, X31, X11, X09)
© Ericsson AB 2010 | Ericsson Internal | Date:Dec-30-2010
Erlang Minutes Per Drop
0
100
200
300
400
500
600
700
800
900
1000
08/1
2/20
10 0
0:00
09/1
2/20
10 0
0:00
10/1
2/20
10 0
0:00
11/1
2/20
10 0
0:00
12/1
2/20
10 0
0:00
13/1
2/20
10 0
0:00
14/1
2/20
10 0
0:00
15/1
2/20
10 0
0:00
16/1
2/20
10 0
0:00
17/1
2/20
10 0
0:00
18/1
2/20
10 0
0:00
19/1
2/20
10 0
0:00
20/1
2/20
10 0
0:00
21/1
2/20
10 0
0:00
22/1
2/20
10 0
0:00
23/1
2/20
10 0
0:00
24/1
2/20
10 0
0:00
25/1
2/20
10 0
0:00
26/1
2/20
10 0
0:00
27/1
2/20
10 0
0:00
28/1
2/20
10 0
0:00
29/1
2/20
10 0
0:00
30/1
2/20
10 0
0:00
31/1
2/20
10 0
0:00
01/0
1/20
11 0
0:00
02/0
1/20
11 0
0:00
03/0
1/20
11 0
0:00
04/0
1/20
11 0
0:00
05/0
1/20
11 0
0:00
06/0
1/20
11 0
0:00
07/0
1/20
11 0
0:00
08/0
1/20
11 0
0:00
BSC16
BSC19
BSC22
BSC25
BSC27
BSC28
BSC60
BSC61
BSC62
BSC63
BSC65
BSC67
BSCN6
BSCN8
Average of TCH Erlang Minutes/Drop
Time (Date)
BSC
Batch 1
Batch 2
Batch 3Batch 4
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
Do not add objects or text in the footer area
Erlang Minutes per Drop improved in all BSCs.
BSC Level_Erl Minutes Between Drops (MS13, MS2, X29, X25, MS11, MS1, X23, X21, X15, X19, XG3)
© Ericsson AB 2010 | Ericsson Internal | Date:Dec-30-2010
Erlang Minutes Per Drop
100
200
300
400
500
600
700
08/1
2/20
10 0
0:00
09/1
2/20
10 0
0:00
10/1
2/20
10 0
0:00
11/1
2/20
10 0
0:00
12/1
2/20
10 0
0:00
13/1
2/20
10 0
0:00
14/1
2/20
10 0
0:00
15/1
2/20
10 0
0:00
16/1
2/20
10 0
0:00
17/1
2/20
10 0
0:00
18/1
2/20
10 0
0:00
19/1
2/20
10 0
0:00
20/1
2/20
10 0
0:00
21/1
2/20
10 0
0:00
22/1
2/20
10 0
0:00
23/1
2/20
10 0
0:00
24/1
2/20
10 0
0:00
25/1
2/20
10 0
0:00
26/1
2/20
10 0
0:00
27/1
2/20
10 0
0:00
28/1
2/20
10 0
0:00
29/1
2/20
10 0
0:00
30/1
2/20
10 0
0:00
31/1
2/20
10 0
0:00
01/0
1/20
11 0
0:00
02/0
1/20
11 0
0:00
03/0
1/20
11 0
0:00
04/0
1/20
11 0
0:00
05/0
1/20
11 0
0:00
06/0
1/20
11 0
0:00
07/0
1/20
11 0
0:00
08/0
1/20
11 0
0:00
BSC15
BSC17
BSC18
BSC20
BSC21
BSC23
BSC24
BSC26
BSC64
BSC66
BSCN10
BSCN11
BSCN12
BSCN4
BSCN5
BSCN7
BSCN9
Average of TCH Erlang Minutes/Drop
Time (Date)
BSC
Batch 5
Batch 6 Batch 7
Batch 8
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
Do not add objects or text in the footer area
Call Success Rate
99.2
99.3
99.4
99.5
99.6
99.7
99.8
08/1
2/10
09/1
2/10
10/1
2/10
11/1
2/10
12/1
2/10
13/1
2/10
14/1
2/10
15/1
2/10
16/1
2/10
17/1
2/10
18/1
2/10
19/1
2/10
20/1
2/10
21/1
2/10
22/1
2/10
23/1
2/10
24/1
2/10
25/1
2/10
26/1
2/10
27/1
2/10
28/1
2/10
29/1
2/10
30/1
2/10
31/1
2/10
01/0
1/11
02/0
1/11
03/0
1/11
04/0
1/11
05/0
1/11
06/0
1/11
07/0
1/11
08/0
1/11
BSC16
BSC19
BSC22
BSC25
BSC27
BSC28
BSC60
BSC61
BSC62
BSC63
BSC65
BSC67
BSCN6
BSCN8
Sum of CSR
Date
BSCName
BSC Level_Call Success Rate (MS12, X27, MS23, MS3, X17, X31, X11, X09)
© Ericsson AB 2010 | Ericsson Internal | Date:Dec-30-2010
Improvement Trend is noted in all BSCs
Batch 1
Batch 2
Batch 3 Batch 4
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
Do not add objects or text in the footer area
Call Success Rate
99
99.1
99.2
99.3
99.4
99.5
99.6
99.7
99.8
08/1
2/10
09/1
2/10
10/1
2/10
11/1
2/10
12/1
2/10
13/1
2/10
14/1
2/10
15/1
2/10
16/1
2/10
17/1
2/10
18/1
2/10
19/1
2/10
20/1
2/10
21/1
2/10
22/1
2/10
23/1
2/10
24/1
2/10
25/1
2/10
26/1
2/10
27/1
2/10
28/1
2/10
29/1
2/10
30/1
2/10
31/1
2/10
01/0
1/11
02/0
1/11
03/0
1/11
04/0
1/11
05/0
1/11
06/0
1/11
07/0
1/11
08/0
1/11
BSC15
BSC17
BSC18
BSC20
BSC21
BSC23
BSC24
BSC26
BSC64
BSC66
BSCN10
BSCN11
BSCN12
BSCN4
BSCN5
BSCN7
BSCN9
Sum of CSR
Date
BSCName
BSC Level_Call Success Rate (MS13, MS2, X29, X25, MS11, MS1, X23, X21, X15, X19, XG3)
© Ericsson AB 2010 | Ericsson Internal | Date:Dec-30-2010
Improvement Trend is noted in all BSCs
Batch 5
Batch 6 Batch 7
Batch 8
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
Do not add objects or text in the footer area
Tch Traffic
0
5000
10000
15000
20000
25000
30000
35000
40000
08/1
2/10
09/1
2/10
10/1
2/10
11/1
2/10
12/1
2/10
13/1
2/10
14/1
2/10
15/1
2/10
16/1
2/10
17/1
2/10
18/1
2/10
19/1
2/10
20/1
2/10
21/1
2/10
22/1
2/10
23/1
2/10
24/1
2/10
25/1
2/10
26/1
2/10
27/1
2/10
28/1
2/10
29/1
2/10
30/1
2/10
31/1
2/10
01/0
1/11
02/0
1/11
03/0
1/11
04/0
1/11
05/0
1/11
06/0
1/11
07/0
1/11
08/0
1/11
BSC16
BSC19
BSC22
BSC25
BSC27
BSC28
BSC60
BSC61
BSC62
BSC63
BSC65
BSC67
BSCN6
BSCN8
Sum of TCH_ERL
Date
BSCName
BSC Level_Traffic (MS12, X27, MS23, MS3, X17, X31, X11, X09)
© Ericsson AB 2010 | Ericsson Internal | Date:Dec-30-2010
BSCs follow the network Trend of traffic
Batch 1
Batch 2
Batch 3
Batch 4
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
Do not add objects or text in the footer area
Tch Traffic
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
08/1
2/10
09/1
2/10
10/1
2/10
11/1
2/10
12/1
2/10
13/1
2/10
14/1
2/10
15/1
2/10
16/1
2/10
17/1
2/10
18/1
2/10
19/1
2/10
20/1
2/10
21/1
2/10
22/1
2/10
23/1
2/10
24/1
2/10
25/1
2/10
26/1
2/10
27/1
2/10
28/1
2/10
29/1
2/10
30/1
2/10
31/1
2/10
01/0
1/11
02/0
1/11
03/0
1/11
04/0
1/11
05/0
1/11
06/0
1/11
07/0
1/11
08/0
1/11
BSC15
BSC17
BSC18
BSC20
BSC21
BSC23
BSC24
BSC26
BSC64
BSC66
BSCN10
BSCN11
BSCN12
BSCN4
BSCN5
BSCN7
BSCN9
Sum of TCH_ERL
Date
BSCName
BSC Level_Traffic (MS13, MS2, X29, X25, MS11, MS1, X23, X21, X15, X19, XG3)
© Ericsson AB 2010 | Ericsson Internal | Date:Dec-30-2010
BSCs follow the network Trend of traffic
Batch 5
Batch 6 Batch 7
Batch 8
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
Do not add objects or text in the footer area
CONCLUSIONS› Significant improvements are observed in Subscriber
Perceived Call Drop Rate (~15%), CSR and Erlang Minutes between drops in NW after the rollout of the change.
› Reduction in Quality, Signal Strength and Sudden drops are observed, with majority of contribution from Sudden drops.
› The improved call drop rate is a better reflection of customer perception and further optimization efforts will target ‘real customer impacting drops.
› Thanks to MU China and MU India for sharing their experiences in KB and for the support provided.
Slide title minimum 32 pt
(32 pt makes 2 rows
Text and bullet level 1 minimum 24 pt
Bullets level 2-5minimum 20 pt
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂăąĆćĊċČĎďĐđĒĖėĘęĚěĞğĠġĢģĪīĮįİıĶķĹĺĻļĽľŁłŃńŅņŇňŌŐőŒœŔŕŖŗŘřŚśŞşŠšŢţŤťŪūŮůŰűŲųŴŵŶŷŸŹźŻżŽžƒȘșˆˇ˘˙˚˛˜˝ẀẁẃẄẅỲỳ–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥fifl
ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș
ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐәǽẀẁẂẃẄẅỲỳ№
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CONCLUSIONS› In our network we suspect some TCH Drops comming from
NSS part :
From the call flow (standard) we can deduct the condition to respect : T305+2*T308+T3109<(N200+1)*T200
in our case T305 = 30s; T308= 10s; N200=0 et T200=2s for the majority of cells (so we don't respect the condition)
They suggest me to make the change bellow :
T305: 30 --> 2 SecT308: 10 --> 1 Sec
