Fixed Network service frequent fault Analysis(October) v2.pptx

FIXED NETWORK SERVICES FREQUENT FAULT
DATA ANALYSIS AND RECOMMENDATIONS
(OCTOBER)
November, 2023

STRATEGIC PARTNERSHIP
BETWEEN ETHIO TELECOM &
INFORMATION NETWORK SECURITY
ADMINISTRATION

1/22/2024 Prepared by FND SPPA Team

FIXED SERVICE FREQUENT FAULT DATA ANALYSIS
Prepared by FND SPPA Team
1/22/2024
Fixed Service Frequent Fault Data
Fixed Service Frequent Fault Root Causes
Summary and Recommendation
CONTENT
Objective

1/22/2024
 Objective
■ Identify Locations of fault (i.e. Zone/Region).
■ Identify Fixed services Frequent Fault Root Causes
■ Identify customer impacted and corresponding NEs
■ Classifying Impacted customer types
■ Proposed solution/recommendation
Data source: FNBridge one month data(October, 2023)

1/22/2024
Frequent fault registered [October, 2023]
 Total one month TT registered and collected data
= 142,054 (100%)
 Fault reason appropriately registered : 95,558 (67.27%)
 Fault reason is not registered (null value) for
= 45,837 (32.27%) records/instances
 Default (Appropriate fault reason is not selected) for
= 659 (0.46%) instances
October, 2023
No Fault reason Count (volume) In(%)
1 RCA filled 95,558 67.27
2 Not filled (Default & blank) 46,496 32.73
Grand Total 142,054 100
67.27
32.73
Fault reason data In(%)
RCA filled Not filled (Default & blank)

1/22/2024
Frequent fault registered August to November 2023 Summary
N.B.at November the highest TT registered is default and blank.
No Fault reason August September October November
1 RCA filled 97,188 79,937 95,558 6,297
2
Not filled (Default &
blank) 53,638 45,286 46,496 132,447
G.Total 150,826 125,223 142,054 138,744
150,826
125,223
142,054 138,744
AUGUST SEPTEMBER OCTOBER NOVEMBER
Total TT registered

1/22/2024
TT Registered Per Zone & Region
September, 2023 October, 2023
No Zone/Region
Customer
Base
Count of TT
registered
TT rate/CB In (%)/Total
1 SER 105,891 14,145 13.36 11.30
2 SWAAZ 97,188 12,389 12.75 9.89
3 WAAZ 92,030 10,845 11.78 8.66
4 EAAZ 120,282 10,682 8.88 8.53
5 SAAZ 100,138 9,525 9.51 7.61
6 SR 80,279 6,830 8.51 5.45
7 NR 69,277 6,728 9.71 5.37
8 NAAZ 99,888 6,712 6.72 5.36
9 SWR 45,069 6,558 14.55 5.24
10 SSWR 53,218 5,213 9.80 4.16
11 CAAZ 126,469 4,891 3.87 3.91
12 ER 69,668 4,300 6.17 3.43
13 WR 36,874 3,928 10.65 3.14
14 NWR 101,076 3,169 3.14 2.53
15 CWR 14,489 3,126 21.57 2.50
16 NER 52,658 2,769 5.26 2.21
17 EER 11,219 2,605 23.22 2.08
18 CNR 22,511 2,516 11.18 2.01
19 NNWR 27,010 2,370 8.77 1.89
20 CER 11,327 2,297 20.28 1.83
21 NEER 5,833 1,664 28.53 1.33
22 WWR 8,838 1,505 17.03 1.20
23 SWWR 2,520 456 18.10 0.36
Grand Total 1,353,752 125223 9.25 100.00
No Zone/Region
Customer
Base
Count of TT
registered
TT
rate/CB
In
(%)/Total
1SER 105,582 16,320 15.46 11.49
2SWAAZ 96,886 13,292 13.72 9.36
3WAAZ 92,114 13,253 14.39 9.33
4EAAZ 120,102 11,587 9.65 8.16
5SAAZ 100,218 10,702 10.68 7.53
6SR 79,925 8,095 10.13 5.7
7NAAZ 99,911 7,502 7.51 5.28
8NR 69,487 7,417 10.67 5.22
9SSWR 53,243 6,897 12.95 4.85
10SWR 45,130 6,707 14.86 4.72
11CAAZ 126,648 5,628 4.44 3.96
12NWR 101,616 5,170 5.09 3.64
13ER 69,777 4,143 5.94 2.92
14WR 36,819 3,977 10.80 2.79
15CNR 22,486 3,456 15.37 2.43
16CWR 14,508 3,407 23.48 2.39
17NER 52,731 3,187 6.04 2.24
18EER 11,193 2,655 23.72 1.87
19CER 11,378 2,535 22.28 1.78
20NNWR 27,027 2,534 9.38 1.78
21WWR 8,847 1,730 19.55 1.22
22NEER 5,871 1,295 22.06 0.91
23SWWR 2,492 565 22.67 0.39
Grand Total 1,353,991 142,054 10.49 100

1/22/2024
TT Registered Per Zone & Region
October, 2023 November, 2023
No Zone/Region
Customer
Base
Count of TT
registered
TT
rate/CB
In
(%)/Total
1SER 105,582 16,320 15.46 11.49
2SWAAZ 96,886 13,292 13.72 9.36
3WAAZ 92,114 13,253 14.39 9.33
4EAAZ 120,102 11,587 9.65 8.16
5SAAZ 100,218 10,702 10.68 7.53
6SR 79,925 8,095 10.13 5.7
7NAAZ 99,911 7,502 7.51 5.28
8NR 69,487 7,417 10.67 5.22
9SSWR 53,243 6,897 12.95 4.85
10SWR 45,130 6,707 14.86 4.72
11CAAZ 126,648 5,628 4.44 3.96
12NWR 101,616 5,170 5.09 3.64
13ER 69,777 4,143 5.94 2.92
14WR 36,819 3,977 10.80 2.79
15CNR 22,486 3,456 15.37 2.43
16CWR 14,508 3,407 23.48 2.39
17NER 52,731 3,187 6.04 2.24
18EER 11,193 2,655 23.72 1.87
19CER 11,378 2,535 22.28 1.78
20NNWR 27,027 2,534 9.38 1.78
21WWR 8,847 1,730 19.55 1.22
22NEER 5,871 1,295 22.06 0.91
23SWWR 2,492 565 22.67 0.39
Grand Total 1,353,991 142,054 10.49 100
Zone/Region
Customer
Base
Count of TT
registered TT rate/CB In %/Total
SER 105,582 16,773 15.89 12.09
WAAZ 92,114 12,270 13.32 8.84
SWAAZ 96,886 11,968 12.35 8.63
EAAZ 120,102 10,108 8.42 7.29
SAAZ 100,218 9,184 9.16 6.62
SSWR 53,243 8,648 16.24 6.23
SR 79,925 8,338 10.43 6.01
NR 69,487 7,698 11.08 5.55
SWR 45,130 6,674 14.79 4.81
NAAZ 99,911 6,120 6.13 4.41
CAAZ 126,648 5,156 4.07 3.72
ER 69,777 4,444 6.37 3.2
WR 36,819 4,214 11.45 3.04
NWR 101,616 3,887 3.83 2.8
NER 52,731 3,764 7.14 2.71
CWR 14,508 3,695 25.47 2.66
NNWR 27,027 3,349 12.39 2.41
EER 11,193 3,039 27.15 2.19
CNR 22,486 2,753 12.24 1.98
CER 11,378 2,652 23.31 1.91
WWR 8,847 1,864 21.07 1.34
NEER 5,871 1,574 28.81 1.13
SWWR 2,492 572 22.95 0.41
Grand Total 1,353,991 138,744 10.25 100

1/22/2024
Frequent fault root cause [October, 2023]
No Frequent fault reasons Count (volume) in (%)
20 Drop Wire theft 724 0.51
21 Customer Contact Not respond 722 0.51
22 --Please Select Trouble Reason-- 659 0.46
23 Bill Problem 599 0.42
24 NE down for a long time 573 0.40
25 Patch cord problem 328 0.23
26 Customer not found 240 0.17
27 Modem Damaged 213 0.15
28 MAC Lost 194 0.14
29 Under service provisioning 134 0.09
30 Modem problem, needs replacment 114 0.08
31 Security issue at the site 64 0.05
32 Wrong Customer Contact 8 0.01
Grand Total 142,054 100
No. Frequent fault reasons Count (volume) in (%)
1(blank) 45837 32.27
2Cable Problem 28351 19.96
3Customer Side Problem 9665 6.80
4DW cut 8363 5.89
5Card Problem 8252 5.81
6NE Power down 6696 4.71
7Configuration Lost on CPE 5545 3.90
8NE problem 3676 2.59
9Fiber loss 3264 2.30
10Fiber Cut 2760 1.94
11CPE Problem 2382 1.68
12Internal Cable Problem 2223 1.56
13Cable Damaged 2020 1.42
14there were no problem 1868 1.31
15Working at time of contact 1820 1.28
16Speed Problem 1684 1.19
17Port Problem 1272 0.90
18Customer LAN Problem 987 0.69
19Fuse Problem 812 0.57

1/22/2024
Merged frequent fault Root cause [September, October & November]
No Frequent fault reasons
September, 2023 October, 2023
November, 2023
Count (volume) in (%) Count (volume) in (%)
Count (volume) in (%)
1
Cable Problem/damaged/DW cut/Drop Wire theft/Patch
cord problem/Fiber loss/cut
37,971 47.50 45,810 47.94
3,184
50.56
2
Customer Side/internal cable Problem/Customer LAN
Problem
10,219 12.78 12,875 13.47
788
12.51
3 NE problem/NE Power down/NE down for a long time 8,625 10.79 10,945 11.45
479
7.61
5 Card Problem/Port Problem 8,564 10.71 9,524 9.97
639
10.15
4
Configuration Lost on CPE/CPE Problem/Modem
Damaged/problem, needs replacement/MAC Lost
7,441 9.31 8,448 8.84
620
9.85
6
Working at time of contact/there were no
problem/Customer Contact Not respond/Customer not
found/Wrong Customer Contact
4,106 5.14 4,663 4.88
370
5.88
7 Speed Problem 1,653 2.07 1,684 1.76 117 1.86
8 Fuse Problem 645 0.81 812 0.85 43 0.68
9 Bill Problem 537 0.67 599 0.63 41 0.65
10 Under service provisioning 108 0.14 134 0.14 12 0.19
11 Security issue at the site 68 0.09 64 0.07 4 0.06
Grand Total 79,937 100 95,558 100 6,297 100

1/22/2024
Root causes of Frequent fault [September, October and November]
• According to the analysis from the data, Cable Problem/damaged/DW cut/Drop Wire theft/Patch cord problem/Fiber loss/cut grades the highest
frequent fault reason.
0
10
20
30
40
50
60
47.5
12.78
10.79
10.71
9.31
5.14
2.07
0.81
0.67
0.14
0.09
47.94
13.47
11.45
9.97
8.84
4.88
1.76
0.85
0.63
0.14
0.07
50.56
12.51
7.61
10.15
9.85
5.88
1.86
0.68
0.65
0.19
0.06
Frequent fault root causes in (%)
September, 2023 October, 2023 November, 2023

1/22/2024
CUSTOMERS FAULT FREQUENCY/NEs [September, October and November]
• High number of frequent fault is registered on customers connected to MSAG followed by MSAN.
No
NE
Type
No of
NEs
September,
2023
October, 2023 November, 2023
Frequent
fault
In (%)
Frequent
fault
In (%)
Frequent
fault
In (%)
1 MSAG 1,918 76,425 73.19 86,891 73.56 74,291 74.34
2 MSAN 1,130 23,456 22.46 26,613 22.53 23,109 23.13
3 MDU 389 3,113 2.98 2,991 2.53 1,014 1.01
4 OLT 46 948 0.91 1,071 0.91 1,180 1.18
5 DSLAM 581 470 0.45 546 0.46 324 0.32
6 PSTN 284 1 0.00 10 0.00 11 0.01
Total 4,348 104,413 100 118,122 100 99,929 100
0
10
20
30
40
50
60
70
80
MSAG MSAN MDU OLT DSLAM PSTN
73.19
22.46
2.98
0.91
0.45
0
73.56
22.53
2.53
0.91
0.46
0
74.34
23.13
1.01
1.18
0.32
0.01
Type of NE customers Impacted
September October November

1/22/2024
Top NEs with most frequent fault registered[October]
• The table presents top 20 NEs, that impacted connected customers with their ethio zonal/regional boundaries, the status of MSAG 73 reported by the
concerned team it says completed but still the MSAG is under the 2nd level
No Network element
Frequent fault
count
Fault frequency
(%)
Status
1 111086_MSAN_1642.YEKA_ABADO_Condominium_BLOCK-51.NAAZ.AA 612 0.43
OLT relocation completed, uplink fiber installation ongoing,
migration not started
2 MSAG-73.ZTE..ADAMA73.SER 518 0.36
Discussed with EEU connect from other transformer /8
pole/solved
3 MSAG-2212_DG.ZTE.Kore_Condominium_2_kore.SWAAZ.AA 436 0.31 Included under copper switch off
4 MSAN-1641-YEKA_ABADO-Condominium_BLOCK-578.NAAZ.AA 376 0.26
5 MSAN-44.HW.Alem_Bank.Tuludimtu.SAAZ.AA 342 0.24
6 MSAN-0009_BB.ZTE.Acros_Yeshi_Total_To_Left_Akaki.SAAZ.AA 304 0.21
7 MSAG-2607_DGC.ZTE.Behind_SafewaySupermarket_Lebu.SWAAZ.AA 289 0.20
8 MSAG-0225_DGC.ZTE.Behaind_Gizesh_BLDG_Bulbula.SAAZ 288 0.20
9 MSAG-0497_DG.ZTE.Number_8_Bus_station_Kechene.WAAZ.AA 263 0.19 No update
10 MSAN-42.HW.Alem_Bank.Tuludimtu.SAAZ.AA 261 0.18
11 111165_OLT_Ayat_FL.HW.AYATTEL.EAAZ.AA 256 0.18
12 MSAG-0440_DGC.ZTE.The_Squre_To_North_Semen_Mazgaja.WAAZ.AA 254 0.18
13 151011_MDU-Sheder.HW.Tele.Sheder.EER 240 0.17
14 MSAG-0938_DG.ZTE.Infront_International_Lab_Bulgaria.CAAZ.AA 235 0.17
15 MSAG-58_AC.ZTE.LOKEBECHU.Awassa.SR 220 0.15
16 MSAG-1636_DG.ZTE.Right_Abune_Kiros_Church.Legetafo.CNR 218 0.15
17 MSAG-10&&.ZTE..Bishoftu.SER 215 0.15
18 111086_OLT_Kotebe_FL.HW.CMCTEL.EAAZ.AA 210 0.15 No update
19 MSAN-2046_BB.ZTE.Near_CBO_Bank_Furi_Branch_Furi.SWAAZ.AA 206 0.15 Included under copper switch off
20 MSAN-323_DG.ZTE.Infront_Of_Gerji_EEPCO_GurdShola.EAAZ.AA 198 0.14

1/22/2024
Most frequent fault affected customers respective to NE(September vs October, 2023)
 The table presents top 20 Network elements that highly affects customers in September vs October, 2023.
September, 2023
No Network Element Total TTs
1
111086_MSAN_1642.YEKA_ABADO_Condominium_BLOCK-
51.NAAZ.AA
417
2 MSAN-NOKIA-Anfo Adebabay-112235 370
3 MSAG-2021_DG.ZTE.Ledia_Clinic_Alem_Bank.SWAAZ 278
4 111086_OLT_Kotebe_FL.HW.CMCTEL.EAAZ.AA 257
5 MSAG-2212_DG.ZTE.Kore_Condominium_2_kore.SWAAZ.AA 252
6 MSAG-0497_DG.ZTE.Number_8_Bus_station_Kechene.WAAZ.AA 244
7 MSAG-2412_BB.ZTE.Micael_Sefer_Burayu.WAAZ.AA 244
8 MSAN-0004_BB.ZTE.Serategna_Sefer_Gelan.SAAZ.AA 223
9
MSAG-
0970_DG.ZTE.Gofa_Condominium_B099_Gofa_Mebrat.SAAZ.AA
222
10 MSAG-1721_DG.ZTE.Atletoch_Sefer_Betel.SWAAZ.AA 212
11 MSAG-73.ZTE..ADAMA73.SER 207
12
MSAG-
1621_DG.ZTE.Left_CMC_To_Sumit_Square_600m.Sumit.EAAZ.AA
205
13 MSAG-2051.ZTE.Alemegna.SWAAZ.AA 202
14 MSAG-0337_BB.ZTE.Yerer_Hospital_Gerji.EAAZ.AA 197
15 MSAG-10&&.ZTE..Bishoftu.SER 196
16 MSAN-0885_BB.HW.Friendship_BLDG_Bole.EAAZ.AA 189
17 MSAG-1216_DG.ZTE.Aba_Jefar_Mosque_Kolfe.WAAZ.AA 187
18 MSAG-1**.ZTE.TELE.Agaro.SWR 184
19 MSAG-1606_DGC.ZTE.Ayma_Hotel_Entrance_Summit.NAAZ.AA 184
20 MSAG-2218_DG.ZTE.koshe_Bridge_koshe.SWAAZ 180
October, 2023
1
51.NAAZ.AA 612
4 MSAN-1641-YEKA_ABADO-Condominium_BLOCK-578.NAAZ.AA 376
5 MSAN-44.HW.Alem_Bank.Tuludimtu.SAAZ.AA 342
6
MSAN-0009_BB.ZTE.Acros_Yeshi_Total_To_Left_Akaki.SAAZ.AA 304
7 MSAG-2607_DGC.ZTE.Behind_SafewaySupermarket_Lebu.SWAAZ.AA 289
8 MSAG-0225_DGC.ZTE.Behaind_Gizesh_BLDG_Bulbula.SAAZ 288
9 MSAG-0497_DG.ZTE.Number_8_Bus_station_Kechene.WAAZ.AA 263
11 111165_OLT_Ayat_FL.HW.AYATTEL.EAAZ.AA 256
12
MSAG-
0440_DGC.ZTE.The_Squre_To_North_Semen_Mazgaja.WAAZ.AA 254
13 151011_MDU-Sheder.HW.Tele.Sheder.EER 240
14 MSAG-0938_DG.ZTE.Infront_International_Lab_Bulgaria.CAAZ.AA 235
15 MSAG-58_AC.ZTE.LOKEBECHU.Awassa.SR 220
16 MSAG-1636_DG.ZTE.Right_Abune_Kiros_Church.Legetafo.CNR 218
19 MSAN-2046_BB.ZTE.Near_CBO_Bank_Furi_Branch_Furi.SWAAZ.AA 206
20 MSAN-323_DG.ZTE.Infront_Of_Gerji_EEPCO_GurdShola.EAAZ.AA 198

1/22/2024
Most frequent fault affected customers respective to NE(October vs November, 2023)
 The table presents top 20 Network elements that highly affects customers in October vs November, 2023.
October, 2023
1
51.NAAZ.AA 612
4 MSAN-1641-YEKA_ABADO-Condominium_BLOCK-578.NAAZ.AA 376
6 MSAN-0009_BB.ZTE.Acros_Yeshi_Total_To_Left_Akaki.SAAZ.AA 304
7 MSAG-2607_DGC.ZTE.Behind_SafewaySupermarket_Lebu.SWAAZ.AA 289
8 MSAG-0225_DGC.ZTE.Behaind_Gizesh_BLDG_Bulbula.SAAZ 288
9
MSAG-0497_DG.ZTE.Number_8_Bus_station_Kechene.WAAZ.AA 263
11 111165_OLT_Ayat_FL.HW.AYATTEL.EAAZ.AA 256
12
MSAG-
0440_DGC.ZTE.The_Squre_To_North_Semen_Mazgaja.WAAZ.AA 254
13 151011_MDU-Sheder.HW.Tele.Sheder.EER 240
14 MSAG-0938_DG.ZTE.Infront_International_Lab_Bulgaria.CAAZ.AA 235
15 MSAG-58_AC.ZTE.LOKEBECHU.Awassa.SR 220
16 MSAG-1636_DG.ZTE.Right_Abune_Kiros_Church.Legetafo.CNR 218
19 MSAN-2046_BB.ZTE.Near_CBO_Bank_Furi_Branch_Furi.SWAAZ.AA 206
20 MSAN-323_DG.ZTE.Infront_Of_Gerji_EEPCO_GurdShola.EAAZ.AA 198
November, 2023
No. Network Element Total TTs
1MSAG-2412_BB.ZTE.Micael_Sefer_Burayu.WAAZ.AA 387
2111165_OLT_Ayat_FL.HW.AYATTEL.EAAZ.AA 315
3MSAN-2046_BB.ZTE.Near_CBO_Bank_Furi_Branch_Furi.SWAAZ.AA 312
4MSAG-7.ZTE..DUKEM07.SER 305
5MSAG-0001_DGC.ZTE.Ashewa_Meda_Tatek.WAAZ.AA 249
6111086_MSAN_1642.YEKA_ABADO_Condominium_BLOCK-51.NAAZ.AA 244
7MSAG-1503_DG.ZTE.Rufael_Mosque_Rufael.WAAZ.AA 235
8MSAG-16&&.ZTE..Bishoftu.SER 226
9MSAG-1916_BB.ZTE.Right_After_Ring_Road_Bridge_Hana.SAAZ.AA 218
10MSAG-31.ZTE.RGNSTATE.Jijiga.EER 205
11MSAG-05.ZTE.WUHA_LMAT.Aribamich.SSWR 201
12MSAG-14.ZTE.Sodo.SSWR 201
13MSAG_01.ZTE.Gelawdious.ADAMA.SER 193
14MSAG-0674_DG.ZTE.Near_Metebaber_School_Abinet.WAAZ.AA 193
15MSAG-1402_BB.ZTE.Near_Chefe_Meda_Ferensay.NAAZ 191
16MSAG-0618_DG.ZTE.St_Petros_Hospital_Meslamia.WAAZ 190
17MSAG-2607_DGC.ZTE.Behind_SafewaySupermarket_Lebu.SWAAZ.AA 187
18MSAG-1216_DG.ZTE.Aba_Jefar_Mosque_Kolfe.WAAZ.AA 186
19MSAG-04_ZTE.MOBIL.HOSSANNA.SSWR 184
20111086_OLT_Kotebe_FL.HW.CMCTEL.EAAZ.AA 181

1/22/2024
A. MSAN_1642(NAAZ)/612:
• The most (ranked as 1st ) frequent fault happens at MSAN_1642. Analysis was performed on it to determine the most
frequent fault reason and type of customer affected by the fault. However, NE problem/NE Power down is the 1st reason.
No Frequent fault reason
Count of
fault reason
Percentage
1 Blank 386 63.07
2 NE problem/NE Power down 175 28.59
3 Fiber loss/cut 27 4.41
4 Configuration Lost on CPE 16 2.61
5 Customer LAN, Customer Side 2 0.33
6
Working at time of contact/there
were no problem
2 0.33
7 Speed Problem 2 0.33
8 Security issue at the site 1 0.16
9 Card Problem 1 0.16
Grand Total 612 100
No Customer type
Count of Customer
type
percentage
1 Enterprise 10 1.63
2 Residential 570 93.14
3 Null 32 5.23
Grand Total 612 100
1.63
93.14
5.23
Affected customer type for MSAN-1642 in(%)
Enterprise Residential Null

1/22/2024
 MSAN_1642 (NAAZ) TT Frequency/Enterprise customers only/
No Customer Name TT Count
1
ABAY BANK S.C. BANK
3
2 ENDALE TESFAYE GASHAE 2
3
MERID SHENKUTE KASSA 2
4 GRAND TRADING PLC 1
5
Active Bet Sports Plc 1
6
B B F TRADING P.L.C 1
Grand Total 10

1/22/2024
B. MSAG-73. ADAMA/518:
• The most (ranked as 2nd) frequent fault happens at MSAG-73. ADAMA ,the status is Discussed with EEU connect from
other transformer /8 pole/ and it is solved.
Count of fault
reason
Percentage
1 Blank 486 93.82
2 there were no problem 12 3.32
3 DW Cut/Cable problem 6 1.16
4
Card Problem/Port Problem
5 0.97
5 Customer side problem 5 0.97
6 Fuse Problem 3 0.58
7 Configuration loss on CPE 1 0.19
Grand Total 518 100
No Customer type
Count of
Customer type
percentage
1 Enterprise 9 1.74
3 Null 337 65.06
Grand Total 518 100
1.74
33.2
65.06
Affected customer type for MSAN-73 Adama

1/22/2024
 MSAG-73. ADAMA TT Frequency/Enterprise customers only/
1 Bank of Abyssinia Lugo Branch 4
2
Awash Bank
1
3 Muna Milkesa 1
4 Brehaen Adama Meserte Kristos Church 1
5 Oromia Bank. INTERNATIONAL BANK S.C. 1
6 zewudnesh leta bulcha 1
Grand Total 9

1/22/2024
C. MSAG-2212 kore(SWAAZ)/436:
• The most (ranked as 3rd) frequent fault happens at MSAG_2212 at SWAAZ NE Power down and NE problem is the 1st
reason.
Count of
fault
reason
Percentage
1 NE problem/NE Power down 186 42.66
2 Blank 153 35.09
3 Cable problem 94 21.56
4 Customer Side 2 0.46
5 Card Problem 1 0.23
Grand Total 436 100
No Customer type
Count of
Customer type
percentage
1 Enterprise 10 2.29
3 Null 21 4.82
Grand Total 436 100
2.29
92.89
4.82
Affected customer type for MSAG-2212

1/22/2024
 MSAG-2212 kore(SWAAZ ) TT Frequency/Enterprise customers only/
1
TSEGAY TEKLU BISET
5
2
ALEM AND FAMILY PLC . . . .
2
3
AMAR ENDRIS ZEINE
1
4 spring of knowledge acadamy 1
5 ABDU ABEGAZ IMER 1
Grand Total 10

1/22/2024
Customer type impacted by frequent fault
• Residential/Individual customers are affected 57.26%, where as enterprise customers are affected 22.91%.
Customer
type
Count In (%) Count In (%) Count In (%)
Individual 67,990 54.30 81,342 57.26 74,729 53.86
Enterprise 23,167 18.50 32,544 22.91 33,896 24.43
Unknown
(null)
34,066 27.20 28,168 19.83 30,119 21.71
Grand Total 125,223 100 142,054 100 138,744 100
0
10
20
30
40
50
60
54.3
57.26
53.86
18.5
22.91
24.43
27.2
19.83
21.71
Customer type In (%)
Individual Enterprise Unknown (null)

1/22/2024
Customer impacted/service type
Service Type
Count Percentage Count Percentage Count Percentage
FBB 78,425 62.63 96,283 67.78 93,070 67.08
FLV 4,678 3.74 7,273 5.12 7036 5.07
Others 42,120 33.64 38,498 27.10 38,638 27.85
Total 125,223 100 % 142,054 100 138,744 100
October,2023
Service type Customer Type
Count of Customer
Type
In (%)
FBB
Enterprise 21,105 14.86
Individual 73,246 51.56
Null 1,932 1.36
FLV
Enterprise 4,255 2.99
Individual 3,016 2.12
Null 2 0
Others
Enterprise 7184 5.06
Individual 5080 3.58
Null 26,234 18.47
Total 142,054 100
0
10
20
30
40
50
60
70
62.63
67.78
67.08
3.74
5.12
5.07
33.64
27.1
27.85
Customer impacted/service type(%)
FBB FLV Others

1/22/2024
TT by PRTG (3.8% share from the total TT)
PRTG per Zones
Zones Enterprise Individual Null Total
EAAZ 421 2 423
CAAZ 378 1 379
SAAZ 360 2 1 363
SWAAZ 344 5 349
WAAZ 270 1 1 272
NAAZ 185 3 188
Total 1,958 14 2 1,974
PRTG Per Regions
Regions Enterprise Individual Null Total
SER 560 - 560
NWR 531 - 531
SR 342 - 342
SWR 303 - 303
CNR 236 - 1 237
WR 230 - 230
SSWR 228 - 228
NER 190 - 190
NNWR 181 - 181
CWR 142 - 142
ER 126 - 126
NR 73 - 73
EER 70 - 70
WWR 65 - 65
CER 63 - 63
SWWR 55 - 55
NEER 37 - 37
Total 3,432 - 1 3,433
Z/R Enterprise Individual Null Grand Total
Region
3,432 - 1 3,433
Zones 1,958 14 2 1,974
G-Total 5,390 14 3 5,407

1/22/2024
Unregistered frequent fault reasons
• Fault reason that are not appropriately registered (Default & blank) per zone/region
No Zone/Region Customer Base
Count of TT
registered Count (volume) Null TT/CB In (%)
1 SER 105,582 16,320 6497 6.15 13.97
2 NWR 101,616 5,170 3697 3.64 7.95
3 SWAAZ 96,886 13,292 3560 3.67 7.66
4 NR 69,487 7,417 3350 4.82 7.20
5 SWR 45,130 6,707 2823 6.26 6.07
6 NAAZ 99,911 7,502 2726 2.73 5.86
7 SR 79,925 8,095 2490 3.12 5.36
8 EAAZ 120,102 11,587 2454 2.04 5.28
9 SAAZ 100,218 10,702 2385 2.38 5.13
10 NER 52,731 3,187 2234 4.24 4.80
11 NNWR 27,027 2,534 1816 6.72 3.91
12 CAAZ 126,648 5,628 1808 1.43 3.89
13 SSWR 53,243 6,897 1755 3.30 3.77
14 WR 36,819 3,977 1640 4.45 3.53
15 WAAZ 92,114 13,253 1555 1.69 3.34
16 ER 69,777 4,143 1482 2.12 3.19
17 CNR 22,486 3,456 1098 4.88 2.36
18 EER 11,193 2,655 1052 9.40 2.26
19 WWR 8,847 1,730 707 7.99 1.52
20 NEER 5,871 1,295 659 11.22 1.42
21 CER 11,378 2,535 340 2.99 0.73
22 CWR 14,508 3,407 232 1.60 0.50
23 SWWR 2,492 565 136 5.46 0.30
Grand Total 1,353,991 142,054 46,496 3.43 100.00
0
2
4
6
8
10
12
14
SER
NWR
SWAAZ
NR
SWR
NAAZ
SR
EAAZ
SAAZ
NER
NNWR
CAAZ
SSWR
WR
WAAZ
ER
CNR
EER
WWR
NEER
CER
CWR
SWWR
13.97
7.95
7.66
7.2
6.07
5.86
5.36
5.28
5.13
4.8
3.91
3.89
3.77
3.53
3.34
3.19
2.36
2.26
1.52
1.42
0.73
0.5
0.3
Inappropriately registered fault reasons in (%)

1/22/2024
 Summery
• Fixed network fault frequency root causes have been determined. Thus, Cable Problem/damaged/DW cut/Drop Wire
theft/Patch cord problem/Fiber loss/cut is the top reason for the repetitive fault.
• The top Zones/regions affected by frequent fault are SER,SWAAZ,WAAZ,SR & NR according to Ethio telecom's
zonal/regional classification.
• Customers connected to MSAG is highly impacted by frequent fault followed by MSAN, even though MSAGs are
numerous in number than other NE types.
• The top 20 network elements with most frequent fault registered along with respective ethio zonal/regional boundaries
have been identified.
• Residential/Individual customers are highly affected by this repetitive fault.
• Fixed Broadband service is the highest repetitive fault registered than Fixed voice service.

1/22/2024
 Recommendation
 NE problem and NE Power down should be resolved at MSAN-1642.
 On MSAG-73 Adama(2nd ) the highest TT register is blank and there were no problem is the second
reason so it is better to fill the right fault reason.
 NE power down and NE problem are the major causes for MSAG-2212 Kore /SWAAZ/ it should be to
check the power back up.
 One of our challenge was unregistered fault reasons(null values) & inappropriate fault reasons . So, Every
fault reasons should be registered by the technician accordingly.
 TT type is not well defined, and thus challenging to determine if it is FBB or FLV. So, it needs correction by
the respective team.

Fixed Network service frequent fault Analysis(October) v2.pptx

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