Operation And Maintenance

Operation and Maintenance

Technology for executives, Moscow - 13 September 2004 Author: Martinus Grimsmo Presenter: Hans Myhre

Operation and Maintenance Goals

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Receive a complete and fault free network and services – System and network element acceptance test

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Keep the complete network fault free – Restore faulty equipment as quick as possible (not redundant eq.) – Service availability and call setup success close to 100% (>98%) – Service interruption (drop calls) close to 0% (<1%)

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Integrate planned changes with minimum service interruptions – If not possible, interruption only at night time

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Focus on services, keep the complete chain available

Operation and Maintenance Architecture PSTN CN (Core Network)

OMC

GMSC

GGSN HLR/ AUC

MSC/ VLR

OMC-S

BSC RNC

OMC-R

BTS Node B

EIR P C U

BTS Node B

NMS: Network Management System OMC: Operation Maintenance Centre

SGSN

CN (Core Network) RAN (Radio Access Network)

CS (Circuit Switch) PS (Packet Switch)

NMS

VMS SMSC IN

Operation and Maintenance philosophy

– Operation, maintenance and administration of the network shall be based on TMN (CCITT rec. M30) – All the network elements and O&M systems shall be connected to a WAN-net, One terminal per technician – NMC in one central location for monitoring and support – NMC Tasks can be distributed if needed

– All information available on Web – HW-maintenance i generally done by sub contractor

Operation and Maintenance Tasks ●

Operation – Alarm handling (NMS, monitoring of correlated alarms) –

• Fault detection • Dispatching (escalation and trouble ticket to field maintenance) Fault handling (OMC, use of dedicated terminals) • SW troubleshooting and contact with vendor helpdesk

–

–

• Support to field maintenance Configuration handling (OMC, use of dedicated terminals) • Routing and signalling changes • Frequencies and radio parameter changes • Upgrade and update changes Performance Management (OMC or performance tools, Metrica ..) • Analyse Statistic from BSS counters

– Security handling • HW and SW (fire, burglar, virus, etc..) ●

Maintenance – Corrective maintenance (laptop connection to equipment) • Troubleshooting • Spare part handling (repair and logistics) • Drive tests and optimising

– Preventive maintenance • Quality assurance of houses and equipment

Operation and Maintenance Network Maintenance centre ●

Surveillance daytime – – – – –

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Support team – – – –

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Working hours: 0800 – 1600 monday to friday Surveillance and taking action on critical faults (2 persons) Telephone support for field engineers (3 persons) Support on technical customer complaints (1 person) Quality supervision and check-up on faults and information (1 person) Frequent rotation - every person can handle any function Working hours: 0800 – 1600 monday to friday System specialists providing NMC with BackOffice support Responsible for non-critical alarm handling on daytime, i.e. major and minor alarms and performance mgmt. Performing SW/HW maintenance and upgrades in switches and nodes Responsible for system specific customer complaints

NMC off hours

Mon – Fri 1600 – 2200, Sat & Sun & holidays 0800 – 2200

– Surveillance, action and telephone support (1 person). – System specialists on call duty 24 hrs (9 in total) – Customer service 24 hrs

Operation and Maintenance Field Maintenance ●

Outsourcing to 3.part (TnM to Telenor Networks) – Trouble ticket from NMC to sub contractors coordinator – Spare part send to and from maintenance centre – Installation

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Own field technician in the Regions – Multi skilled personnel to handle BTS, MW, Fibre, power, air-condition, … – Ownership to app. 50 sites for corrective and preventive maintenance – Drive test and optimising

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Logistics – Access control (access map, Key to buildings, contact persons…) – Own store with spare part and “repair and return” contract with vendor – Spare Part Management Service from vendor • Vendor deliver all needed spare part to defined service point • Delivery times:2 hour for critical and 24 hour for not critical spare part

Operation and Maintenance Overview Vendor

Info to CC and Management

NMS Surveilance

Escalation

Alarms

Alarm analysis Spare part Dispatcher

Support team experts

Trouble ticket

Trouble ticket, ok

O&M strategy decisions Field maintenance •Centralised or decentralised surveillance •Own expert team or vendor dependent support •Own or outsourced Field maintenance •Own spare part or spare part service from vendors

Network Management Systems Telenor Mobil ●

Network operation and alarm handling – Electronical log (ELOG) – Intranet and own website – Customer complaint handling system (Eureka)

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Vendor dependent systems – – – – – – –

Ericsson GSM: CMAS/FM with ASM/ALV (R8 R9) Nokia GSM and GPRS: NMS/2000 with Alarm Monitor (T12) NMT: Strax with A1 Monitor (Ericsson) DXX: Fault Management (Tellabs/Matris) Value Added Services: Patrol Explorer AAD Nokia Tetra: NMS/400 with Alarm Monitor IP core and access network: Nortel Passport NMS and Optivity

Alarm handling

Alarm handling

Existing and future model for fault- and informationhandling OTL (Service provider)

EUREKA info to/from Customer Care

ODIN (Customer Care)

Internal WEB incl. Map presentation

SLAdatabase

Warning to Management and others by serious Events (SMS, WAP). Fault report system to/from 3rd parties

ELOG

Partnerdatabase Grapihal presentation of net and service status for 3rd parties and own CC

FHS, trouble ticketing to/from Telenor Networks

Electronic fault and event handling system

NOVI, info about planned work from Telenor Networks

Corrolation and site info

STRAX (NMT)

PADDA Inventory management system Existing Future Subproject 8 Other project

CMAS (Ericsson GSM)

NMS/2000 (Nokia GSM)

NMS for X-nett

“Traffic machine”

Patrol 2000 (VAS)

VAS

HP openview

Supportprosess End user

1. line CC

3.P

2. line

3. line

4. line

TnM Nettfront Helpdesk INFOSYSTEM INFORMASIONSYSTEM

TnM CC Internal handling

LEARNING

Mobil O

Internal/ external

P

technical vendors

S

HW/ SW

Networkadministration

Helpdesk (2. line) shall PROTECT 3. line: 3. line has NO direct contact w. 3.Party/ end user

What is practise for different vendors and in different company ● ● ● ●

Ericsson provide TMOS for GSM Nokia provide NMS2000 for GSM Alcatel: Telenor: – –

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Sonofon and Pannon –

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NMS2000

Vimpelcom –

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TMOS and NMS2000 ELOG as NMS system

TMOS and Alatel S12 OMC

Dtac – NMS2000

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DiGi – TMOS

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Grameenphone – TMOS

Inventory system ●

Telenor – Padda – FUN9 for Finance and Roll out follow up. – PROSJEKTMAPPA for ordering of equipment and logistics.

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Sonofon and Pannon – Nokia Dataware house

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DiGi – Enterprise, Optima as a Data Base for Radio and Transmission planning

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Vimpelcom evaluating – – – –

1) 2) 3) 4)

C6000 fra Alcatel ROME fra Arkipelago (Ericsson) Visionael fra Visionael (HP) NIMS fra Incatel (norsk)

Service level options from vendors ●

Service level options, changeable within 1 or 3 months – Option 1 - Standard Service Hours Normal working hours Monday to Friday – Option 2 – Extended Working Hours Support Monday to Friday 08:00 hrs to 22:00 hrs – Option 3 - 24 Hour x 7 Day Support 24 hrs per day 7 days per week.

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On Site support – Option 1 - Standard On-site Response On-Site Service within 1 working day of a Site Service request being logged. – Option 2 - One week On-site Response On-Site Service within one week of a Site Service request being logged.

Access to tower Security: Two person required Climbing skill

Sonofon O&M network S DH HP-O V NNM

g derin opgra V O ler Mang

abovs01/02 HP-O V N NM 6.01 HP-O V IT/O 5.11 HP -O V E CS 3.00

absrv01/02 NM S 2000 T12 HP-O V N NM 6.20 HP-O V IT/O 5.11

S D H R ad io

S D H C ab le

MS C BSC BTS

Backb one TeliaNet

N okia G PR S Firewall DNS SG SN

S NMP -Trap C allCenter IVR UM

U N IX NM S-A gent S MS C IN

NT N etIq abhis01 Nokia N DW

P erform ance M gm t

S urpass NM 2100NM /EHabdxxdb1/cs1 NetM V4N Focus Tellabs M artis DXX

N okia N et

Backbone

U N IX

abalca/b abalc03->06 A lcatel m gm t 4.1 H 2-01

Alcatel R adio M odem /CPE

S urpass

R adioL ink Ericsson

PD H HIA/HIG /HIQ

Netm an

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