Leif Wennergren has over 40 years of experience in telecommunications, including 25 years working for Ericsson in various roles supporting GSM networks across China, Hong Kong, Macau, Egypt, Ethiopia, Bangladesh, Pakistan, Sweden, and Zambia. He has extensive experience with Ericsson equipment like MSC, BSC, RBS and also systems like CME20, GPRS. He is proficient in technologies from 2G up to 3G and troubleshooting tools like SEA, XSENSE. Currently he is involved with a university in Sweden developing business.

1. CURRICULUM VITAE
Date 2014-11-25
Name Mr. Wennergren Leif
Birth date 1953-03-25
Citizenship Swedish
Civil status Married
Home Address: Lextorpsvägen 45 46163 Trollhättan Sweden
Employment date Ericsson 1995
Corporate signature LW
Email leif@mailasia.com
Previous position in Ericsson:;
From Year 1995 Country China
To Year 2007 Country China, Hong-Kong ,Macau,Egypt, Ethiopia,
Bangladesh, Pakistan, Sweden, Zambia
Company Ericsson
Unit Ericsson Network integration, Ericsson ELS Team leader,Ericsson Support
Job Title Free lance consultant for Ericsson : Sr GSM Engineer, Master support Engineer GSM
Career History Ericsson:
1995-1997 China Guangzhou Guangzhou Fso Technical support to first line support
Organization, investigation and trouble-shooting
In GSM area i.e. CSR handling emergency handling system
Updates manage A&B priority fault reports towards the
Customer, team leader and mentor for Ericsson local office
O&M group
1998-1999 China Guangzhou System Updates and Upgrades Pilot implementation for
Guangdong province, Sichuan Guangxi and Macau
CME 20 MSC HLR BSC BTS
1999-2000 China Guangzhou Team leader and responsible for software package,
Emergency correction initiate from first line support
and BSC Product Line Maintenance Sweden for
Assembly Verification Pilot implementation for BSC
GSM system in China, Hong Kong, and Macau
Involved in 24 hour emergency service for second
Line support and supply
2001-2002 China Dalian Coach for Harbin FSO support and involved in new
Setup of Harbin ELS including new service contract
Towards the customer and ERICSSON, assist Network
Optimizing Project of Inner Mongolia and Jiling province
Network, Responsible for the surveillance
of the network. Perform 24 hours surveillance of the whole
GSM network by OSS.monitor, analyze and clear all faults
reported by these systems and also complaints coming from
Customer Care and other operators. Call out the Field
Technicians with a work order, when physical intervention in
hardware is needed

2. 2002-2003 China Guangzhou Sr Engineer for Network Rollout 21230-212 33
Including APZ, APT hardware Software upgrade for China Mobile
GSM Network, holding seminaries in Operation and Maintenance
Statistical STS, internal tools SRH,
ALEX, etc for Ericsson internal local staff and setup
Criteria, certification for external outsourcings company
2005 Cairo Egypt, Ethiopia Ericsson Cairo ELS support engineer for Vodafone network
Responsible for system upgrade BSC R9.1- R10 daily
CSR handling through SMS handling and onsite trouble shooting
In MSC BSC PSTN IOG 20 APZ 212 25 212 30 212 33
2005 Dhaka Bangladesh Master core support Engineer for Ericsson ELS supporting
Grameenphone, Aktel network including on site trouble
Shooting using, SEA and other Ericsson
tools, software, hardware replacement for APT 501,810
APZ 212 40, APG40 also included 24/7
emergency on call rota, CSR handling Primus reporting
2005 Lahore Pakistan Back office engineer for WARID Telecom daily O&M activities
2006 Stockholm Sweden Sr GSM engineer for Spring Mobile daily O&M activities based on
Ericsson MSC, HLR,FNR AUC, BSC troubleshooting signal trace
using tool XSENSE 3.2 for ISUP, MAP BSSAP
2007- Lusaka Zambia Integration support engineer for Ericsson Zambia
POC in CELTEL Zambia network, integration of MSC pool, MSS
MGW.
2010 Sweden Involved in Swedish labor program including business setups etc
2014 - Sweden University West Trollhättan Business development
Career History External:
1972-1973 Sweden Telia Engineering Swedish Telecom, installation various
Telecom equipment
1973-1980 Sweden Telia testing analog equipment for PSTN type crossbar
A204
1980-1989 Sweden Telia O&M engineer on site for analog exchange
1989-1995 Sweden Telia O&M Engineer PSTN AXE10, responsible for corrective
and preventive Maintenance on daily basis
Daily O&M activities from NOC for Swedish Mobile
Operator in GSM area covering MSC BSC BTS
Mentor for Telia internal staff and trainee program in
AXE 10
Educational Qualifications:
1960-1969 Nine Year compulsory school
1970-1972 Vocational school in Telecommunication, Electronic
1989-1995 Swedish Academy in AXE Telecom
1995-2005 Ericsson Academy GSM

3. Training and Courses:
1989 Sweden AXE10
1994 Sweden CME 20 MSC BSC RBS STS
1996 Beijing Delta R-3R-4-R5 MSC
1996 Beijing Delta R-3R4-R5 BSC
1996 Beijing CME 20 O&M MSC
1997 Beijing Delta R-5R-6
1997 Beijing GSM Advance Technique System
1998 Guangzhou Delta R7 MSC
1998 Guangzhou Delta R7 BSC
2000 Guangzhou Delta R8 BSC
2000 Guangzhou GPRS System survey
2003 Guangzhou BSC 9.1
2005 Dhaka MSC R11
2005 Dhaka SEA Training for troubleshooting
2006 Stockholm XSENSE 3.2 signal trace
Language Skills:
English
Swedish
Contact:
Email: leif@mailasia.com
Mobile Sweden: + 46 767548865