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Letztes Update: 06.09.2022

PS Core Network Expert, WAN Network Architect, CS Core &IMS Consultant

Abschluss: nicht angegeben
Stunden-/Tagessatz: anzeigen
Sprachkenntnisse: deutsch (Muttersprache) | englisch (gut)

Schlagwörter

Skills

VoWiFi, IMS, VoLTE / 5G, NSA / SA, Huawei IMS products, CSC3300, iCG9815, SPG2800, MRC / MRP 6600. ATS9900, TAS, HSS / HLR, CSCF, MRF, SBC, PGW, various cloud-based technologies, Kubernetes , Helm charts, Openstack, VMware, Ansible, 5G, SIP, Diameter, SNMP, HTTP2, VoLTE, Wireshark, U2000 / U2020 KPI reporting, NIC tool, Patches installation, Formulas, Titan routing, MBB, high-bandwidth, user, Cloud , IoT, 5G Technologies, ISP, NFV, Openstack / VMware, Ubuntu, Redhat, Mirantis, storage, Testing, Operational experience in running cloud infrastructure, SDN, Network Virtualization, ETSI NFV Framework, (COTs), FusionManager / Huawei Openstack, FusionSphere , CloudMaestro, Cloud OS + MANO + VNF, MSOFT3000X, SOFTX3000, EIR, SE2900, SG7000, MGW, Converged core network, IP Multimedia Sub-system (IMS), IMS Application, MMTel, RCS, conferencing, NGN, IP, MPLS, MSOFTX3000,UGC3200, UMG8900, HLR9820, ATM / FR, xWDM, MPLS / IP, ME / CE, Microwave, WiFi / WiMax, Mobile, 2G, 3G, LTE, Access Network, ADSL, FTTx, Project management, management consulting services, GSM, GPRS, WCDMA, HSPA, LTE-Advanced, STP, SPS, HSS9860, Signaling Probe, CPCI, ATCA, UGW9811, SGW / PGW, USN9810 (MME), UPCC (PCRF), SGSN9810, DNS, GGSN9811 (PCEF), ePDG, vEPSN, vMSE, vCG, vPCRF, Huawei UNC, UDG, SD-WAN, Versa Director, Versa Controller, Versa Analytics, Huawei E9000, F8000, RH2288, HP C7000, KVM, VirtualBox, VSphere, VRealize, VCenter, Astellia Nova Analytics, Nova Explorer, Cloud Opera CSM, YANG, YAML, NFVO, Cloud Opera Orchestrator, SS7, MTP, SCCP, MAP, ISUP, CAMEL, BSSAP, RANAP, INAP, GTP, GRX, SIGTRAN, SBC2600 / 2900, OSIX, Traffica, NetAct , U2000, U2020, Nastar, F5 network, encryption, MDC, IPv6, M2M, LAN, TCP, BIG-IP, Juniper MX-960 platform,network design, network performance, interfaces, analytics, explorer, CDN, DDoS, VRF, WIFI, P2P, caching, WAN, internet, VPN, DSL, backup, IaaS, SaaS, AWS, VBS, data center, APIs, roaming, eSRVCC technologies, QoS, VoIP, virtualization, fault tolerance, Huawei cloud OS, CloudEdge Nodes, hypervisor, system testing, Viber, Skype, BWM, QoS Shaping, Spoofing, firewall, IPSEC, Voip application, Web proxy, Gb, IuPS, Gn / Gp, Gi, Gr, Gx, SOAP, VLAN, S3, HTML, Facebook, Twitter, 3G network, Firewalls, IVR, NSS, USSDSpoofing, firewall, IPSEC, Voip application, Web proxy, Gb, IuPS, Gn / Gp, Gi, Gr, Gx, SOAP, VLAN, S3, HTML, Facebook, Twitter, 3G network, Firewalls, IVR, NSS, USSDSpoofing, firewall, IPSEC, Voip application, Web proxy, Gb, IuPS, Gn / Gp, Gi, Gr, Gx, SOAP, VLAN, S3, HTML, Facebook, Twitter, 3G network, Firewalls, IVR, NSS, USSD

Projekthistorie

01/2018 - 03/2020
vEPC Solution Architect
Proximus-Belgium

Proximus-Belgium
* Migration from Cisco Core towards Huawei vEPC core Successfully launched.
* Successful launch of 5G-NSA service in Proximus.
* Handling of Capacity extensions in UGW IP pools to increase the VoLTE users.
* 5G Assess and Develop Network & Services Strategies given the vendor roadmaps and provided
corporate Strategies for Proximus.
* Launching the NB-IOT Service in Proximus.
* VoLTE Ut interface and XCAP APN migration.
* Huawei Hotfixes and patches installation.
* Adding intelligence to the UGW selection by adding a redundant DNS using F5 network.
* Design and Implementation of Option 3X of the 3GPP in Proximus.
* Launching of the VoWIFI/VoWIFI service first time in Proximus on Huawei vEPC.
* Multi-level redundancy, data encryption, system hardening, rights, management, and global
service support to guarantee service stability and reduce O&M costs.
* Design, Integrate, test and deploy the capacity growth and renewal of the Mobile Data Core (MDC)
network of Proximus (based on CISCO EPC technologies).
* Management the introduction of new technologies and services on the current MDC infrastructure
(e.g. Voice over LTE, VoWIFI, IPv6, M2M, IOT ...).
* Management of the evolution of the Gi-LAN with TCP optimization delivered by the F5 BIG-IP
Platform and with the CGNAT delivered from Juniper MX-960 platform
* Ensuring accurate and cost-effective network design continuously focusing on further improving
network performance, quality and customer experience of data services

08/2017 - 11/2017
PS Core Network Expert
Astellia-Kuwait

Astellia-Kuwait
* Zain Kuwait Core Network Performance Evaluation.
* Core Network Interfaces Evaluation using Astellia Nova Tools Nova solution for EPC, Core-EPC/PS,
IMS, EUTRAN (S1-MME) captures. Main tools are Nova Analytics and Nova Explorer (Nova Explorer is
also part of CAA).
* Examine and audit the existing CDN design and recommend if new CDN needs to be considered based
on facts.
* Audit the VSM network address translation configuration and recommend any actions if required
* Verify Arbor performance and audit its mitigation performance towards DDoS attach from external
* Review Core-PS design (EPC, Gi, GN and connectivity towards all destination) and recommendation
for VRF design
* Verify overall WIFI-offload design and configuration and security part
* Examine and audit different Core-PS elements configuration and parameters and suggest optimum
configuration for efficient operations
* Examine the performance of PeerAp (cashing efficiency, P2P caching, cashing response) and
recommend actions to correct issues found if any
* Examine Gx and Gy design and recommend if required.

03/2017 - 09/2017
WAN Network Architect
Cloud NFV/SD

Liberty Global-United Kingdom
* End-to-End Solution designs responsible for network transformation based on SDN/NFV. The
solution includes One-stop services (XaaS) for B2B customers, Fully orchestrated SDN + NFV + Cloud
(ICT Converged Service) , Micro-service Architecture for agile service development , BDS
Phase-2(Internet, VPN, business anywhere, DSL/LTE backup), and Security as a Service , Virtual
Business Service ready (including NFV, IaaS and SaaS) , Over any access, any media, comprehensive CE
portfolio
* Highly involved in the SD-WAN vendor selection, AWS, and vCPE.
* Customer Portal and OSS interface design.
* Technical Responsibility about SD-WAN HLA/HLD/LLD Designs Project transformation with Virgin
Media UK.
* Design of SD-WAN PoC vendors' test plan.
* Design of Versa SD-WAN platform and Certification Testing analysis.
* Delivery of an automated virtual Business Service provisioning which will allow a nondisruptive
and operationally simplified implementation of VBS (Virtual Business Services) as an
overlay solution for B2B.
* Define SDN Connectivity services by using YANG and the service mapping logic from ServiceModel
to DeviceModel
* Management of the life cycle of virtual resources in a data center domain - creates, maintains
and tears down virtual machines (VMs) from physical resources in a data center
* Inventory of virtual machines (VMs) associated with physical resources
* Performance and fault management of hardware, software and virtual resources
* Storage of North Bound APIs and thus exposes physical and virtual resources to other management
systems.
* Lifecycle management of VNF instances. VNF which can be any virtualized network element
(including vFW, vDPI, vRouter and vSwitch);
* FCAPS (Fault, Configuration, Accounting, Performance and Security Management) of VNFs;
* Scaling up and scaling down the usage of CPU based on each VNF; Play a coordination and
adaptation role for configuration and event reporting between NFVI and EMS.

08/2016 - 12/2016
CS Core &IMS Consultant
Hi3G Access-Sweden

Hi3G Access-Sweden (Through Stott@May)
* Formulate Strategy & Evolution for core network transformation technologies "IMS, VoWiFi, NFV,
LTE/VoLTE for Sweden&Denmark. Design of new services solution, migration and IT system optimization.
* Generation of the CDR handling and VoWIFI Testing plan implementation.
* CS Core Operations Complaints Daily Maintenance issues.
* Mobile Data roaming implementation
* Validation of IMS call flows in VoLTE and Cx, Gy, Sy and Ro Reference points.
Perform IMS trail, install SE2900 (SBC/P-CSCF), SPS (DRA), CSC3300) (I-CSCF/S-CSCF), ATS9000 (TAS),
with all logical and physical interfaces.
* Asses and Develop Network & Services Strategies given the vendor roadmaps and provided
corporate Strategies for Sweden&Denmark.
* Multi-level redundancy, data encryption, system hardening, rights, management, and global
service support to guarantee service stability and reduce O&M costs.
* Troubleshoot and resolve highly complex customer network problems across a broad range of
functions and technologies (IMS, RCS, LTE, VoWiFi, VoLTE,)
* Provide guidance and consultation for IMS, VoWiFi, VoLTE and eSRVCC technologies.
* Optimize network design and element configuration for improved customer experience and enhanced
network resiliency.
* Management and Operational performance of IMS CORE network, technical support for IMS Charging
and mediations systems.
* Planning and coordinating the software upgrade of SDB, PS, EPC, IMS, EMSC and MGW to support the
latest VoLTE Solution (2.0). Undertaking VoLTE network Integration, Service testing and live network
preparation for the VoLTE commercial launch.
* Ensure seamless launching of new services under the existing imposed QoS settings.

01/2016 - 04/2016
Senior PS/IMS/NFV Core Consultant
T-Mobile Germany

T-Mobile Germany
* Cloud Core solution end-to-end delivery including virtualized OS, Openstack based software, MANO
and VNFs.
* Development of Commercial trial of the vIMS and POC of the Cloud IMS.
* T-Mobile NGN Softswitch International Gateway Migration including: T-Mobile NGN-IMS VoIP&PBX,
subscriber migration, T-Mobile NFVi tender RFP & Proof of Concept (PoC), T-Mobile vEPC ,
and T-Mobile vPCRF RFI.
* Implementation and testing of NVF Solution - Huawei E9000/F8000 COTS Server, FusionSphere
Openstack, CloudOpera CSM, MANO vCMM, vEPC Applications.
* Cloud SPS (STP/DRA) VMs resource planning based on Fusion sphere for STP/DRA/USCDB/CGB.
* Creation of SPS (STP/DRA) Organization, and virtualization management center on the VM
virtualization software to manage the live migration (Vmotion), distributed resource scheduler
(DRS), high availability and fault tolerance.
* Provide optimization suggestions on VNF parameter settings using Huawei cloud OS adaptation
feature.
* Development of SDN/NFV reference architecture for commercial deployment. Developed NFV and SDN
requirements for NFV Orchestration, VNF Manager, Software Architecture, Service Performance and
acceleration
* VoLTE & VoWiFi configuration in Virtualized EPC Nodes (CloudEdge Nodes).
* COTS Servers for EPC Core bearer handling. Study included real LTE call model and typical
traffic on service distributions for LTE networks. Study also measured impact of hypervisor, Policy
rules, and DPI.
* NB-IoT Integration & Testing at Cloud Environment, and virtualized EPC deployment using NFV
Solution.
* Coordinate activities and liaise with other research and development teams for deep and
in-depth troubleshooting of all virtualization layers to solve technical problems during NFV project
deliveries
* Handling EPC\PS Level 2 Support, analysis and trouble shooting, handling HLR\HSS\PCRF (UPCC)
Level 2 Support, analysis and trouble shooting.
* Develop HLD and LLD - solution presentation to management and external customers.
* Planning/Designing of new Core elements for IMS (VOBB/VOLTE) & RCS, VoWiFi.
* Accountable for Design, Expansion, Operation & Maintenance of all PS Core Network Elements
including Huawei USN (SGSN + MME), UGW (GGSN + S-GW + P-GW).
* Supporting T-Mobile mobile Installation, planning, configuration, Integration, Migration and
system testing and provide technical support of PS Core/EPC/UPCC (PCRF) /VoLTE network building in
Germany.

06/2014 - 11/2015
Senior PS/IMS Core Back office Consultant
Telefonica-Spain

Telefonica-Spain
* KPI monitoring and optimization (attach/detach, PDP activation/modification, RAU, CPU...).
* Main responsibility includes leading the EPC, PS Core and IP planning, design and delivery
operations teams.
* Implementation of enhanced charging features in the UGW9811 like duplicate configuration for
offline charging, Credit pooling, and Tight online/offline charging interworking.
* Deployment of online charging for when IM-SSF is deployed in the IMS network to interwork with
the SCP. When the CSCF contacts the IM-SSF for online charging, the IM-SSF sends call information to
the SCP to trigger IN services.
* Responsible for Testing, Planning, Designing, Audit & Validation & Product Hardening (security)
of SDM/HSS, Core & nodes, CSC3300,MGCF, ATS9900,
* Back Office Operation Support of Telefonica's packet core network. Tasks include: Upgrades,
migration, integration, commissioning of elements into the Mobile Packet Core network,
Troubleshooting 3rd line issues.
* VoLTE/IMS & SRVCC Feature Implementation and Troubleshooting
* Feature Testing and Validation for Voice over Wi-Fi (Untrusted Access)
* Bandwidth Throttling & blocking of Applications like Viber/Skype using BWM, QoS Shaping.
* Anti-Spoofing Implementation to avoid fraudulent use of free charged services.
* KPI analysis for HSS, MME,UGW(S-GW,P-GW), CG, PCRF ,SGSN, GGSN, firewall(Eudemon8080E&8160E) and
subscriber provisioning for 4G network.
* Patch implementation, upgrades for IPSEC and Network Manager U2000.
* Health Checks to maintain the smooth working for IPSEC, and maintain the Disk spaces for HSS (FE
and BE interface).
* IOT testing with 2G/3G/4G networks.
* Optimize the network by identifying the release causes in accordance with 3GPP.
* Traces analysis for LTE interfaces S1/SGi/S6 and E2E traces for problem identification and
feature testing.
* Trace analyses for Gb/Iu Mode inter-intra Mode Inter SGSN RAU, and analysis for signaling trace
E2E for LTE network and it's troubleshooting in coordination LTE access network to improve the KPI.
* Design and implementation of DPI for LTE_EPC service in both PCRF and PGW.
* Implementation of DPI for new customer requirements (blocking new Voip application, Web proxy.).
* HLD/LLD/Script preparation and implementation for all PS NEs (Gb ,IuPS, Gn/Gp, Gi, Gr, Gx, SOAP,
Gy, Ga, S1-MME, S1_U, S6a, S11, S5 interfaces...).
* P/VLAN/routing planning, Datacom equipment's configuration (PS core switches connected to
IP/MPLS PEs).
* Test of new features' patch, software in test bed and output the technical report and the
roadmap for implementation in live network.
* LTE_EPC Acceptance tests documents preparation and achievement with customer.
* Design and integration of IMS/ VoLTE /EPC /UPCC networks.
* Design and integration of (EPSN+PCRF) and (UGW+PCRF) double Gx interface.

04/2012 - 06/2014
Senior PS Core Optimization Engineer
MTN-South Africa

MTN-South Africa
* Providing Level-2 support for 2G / 3G PS core (SGSN , GGSN , DNS , ) & 4G Network LTE EPC Core (
MME , S-GW , P-GW , CG) and IPSEC.
* Patch test about SRVCC_to_UTRAN/GRAN in VoLTE networks
* Traces analysis for PS core and LTE - EPC core interfaces S1 / S11 / S10 / S3 / S4 / S1 / S12 /
SGi / Gx / S5, S8 / S6a and E2E traces for problem identification and features
* Handle and analyze Customer Service Requests of PS and LTE - EPC core and recommend solutions to
core optimization.
* Analysis of Cause, effect and correlation of KPI (performance) of PS & LTE - EPC core to Alarm &
faults to limit the problem sources.
* Reporting of PS & LTE - EPC core violation to the associate stakeholders and manage the
clearance of the problem.
* Study the traffic trend to improve PS core & LTE - EPC core performance system.
* Experience in PCRF (Gx) deployment, concepts of operation, and policy-based service design and
implementation
* DPI / Traffic Steering (HTML redirection)
* DPI configurations for various application and requests.
* DPI and L7, Facebook, Twitter, Tethering, Skype, What Sapp Application Controlling in UGW9811
* Fair Usage Policies design and implementation on PCRF to ensure smooth operation of network
* Integration and Support of 3G network nodes including SGSN, GGSN, PCRF and Firewalls
* knowledge in EPC protocols such as MME, SGW, PCRF and GTP
* Integration of Huawei SGSN9810, GGSN9811 and PCRF products.
* Commissioning of Huawei SGSN9810, GGSN9811 and PCRF products according to the LLD.
* Providing Level-2 support for 3G (SGSN, GGSN) &4G Network LTE Core (MME, S-GW, P-GW, CG) and
IPSEC.
* Traces analysis for LTE interfaces S1/SGi/S6 and E2E traces for problem identification and
features
* Doing version upgrade for Huawei PS Core Products.
* Full network Service/Policy configuration and management
* Version Upgrade of UPCC (Huawei PCRF) from V3R5 to V3R11
* Creating HLD and LLD for of New PS Core Products.
* Doing the Network Planning for the New PS Core Products.
* Roaming and APNs, Pool Definitions on both PS core nodes (SGSN, GGSN and DNS) and LTE EPC core
nodes (MME and S-GW / P-GW).
* PS Core network charging (offline and real-time; Diameter/Gy-based).

08/2002 - 08/2010
Senior CS Core Engineer
Tunisie Telecom

Tunisie Telecom- Tunisia
* Responsible for providing Level-2 support covering more than 100 NE's including MSC's, MGW's &
SBC's.
* Successfully launched new 5 ATCA MSOFTX3000 & 15 UMG8900 without any service impact.
* Design and successfully launched first ATCA SOFTX3000 for fixed subscribers.
* Complete end to end Installation & Commissioning of ATCA MSOFTX3000 (Serving as VMSC).
* Complete end to end Installation & Commissioning of ATCA SOFTX3000 (Serving for fixed
Subscribers).
* Complete end to end Installation & Commissioning of UMG8900 on the network.
* Performed Version upgrades & license loading activities on ATCA MSOFTX3000 & UMG8900, adding
complete data fill (SPC, GT, MSRN, etc.) for new VMSC.
* Make connectivity of new MSC /new MGW (LI, billing, voice, signaling, O&M, and SIWF) with IP/
MPLS and verify all PING results.
* Make BICC connectivity of new MSC with all other VMSCs and GMSCs, making connectivity of new MSC
with STP, HLR, IN, EIR & RBT Server.
* Successful cutover of commercial BSC on newly integrated VMSC & MGW.
* Successfully cutover of fixed subscribers to new ATCA SOFTX3000.
* Performed BSC/MGW rehoming activities on Live Network.
* Leading integration of Mobile Softswitch Project (MSOFTX3000 and UMG8900). MSC MSoftx3000 (V6,
V8 including ATCA architecture).
* Providing support for UMG8900, HLR9820 (V6/V9(NgHLR)),
* Planned Gn/Gp, Gi, Gb, Gr, Ge and Ga interfaces.
* Finalized Low Level and High-Level Design of GPRS network.
* Responsible for daily maintenance of GPRS nodes including PCU's Gb links configurations/loop,
testing/expansion, GPRS Roaming Exchange (GRX) O&M and New APN configuration on GGSN.
* New offices data fill (ISUP/LDIs/OMOs), SMS Routing, Hardware Load balancing/optimization,
Numbering Level addition & Numbering analysis and IVR Short Code addition, Call Source, LAC/Remote
LACs, CIDs, MSRN, HON, Paging control definition, Emergency Call Routing for various call sources.
* SS7/SIGTRAN links addition with various NSS/IN/VAS nodes, Numbering Level Routing, and MNP
definitions.
* HLR (HLR9820 V6 & V9) IMSI pairings & uploading, USSD Strings Definition, PRS/IR/VPN/Data
Numbers/ Static IP/MCN/VMS provisioning, taking dumps & preparing access level for Revenue
assurance.

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