telecom Incident & Technical Support Engineer

Venkata Subramanian Sankaran

Email: *************@*****.***

Netherlands mobile # - +316********

LinkedIn URL: https://www.linkedin.com/in/venkat-s-8ab23619/ Personal Details:

Residing Address: Hague, Netherlands

Gender: Male Nationality: Indian Date of Birth: 26/04/1986 Languages: English, German (A1 level completed) Passport: V0575978 Visa Status: High Skilled Migrant Visa

PROFILE

Technically competent Incident management & Technical Support Engineer offering around 19+ years extensive telecom industry with good exposure into Switch operations & Incident management in VoIP, IMS & NGN Switches, Linux, and MySQL Database with technical expertise in deployment, Integration and support function.

Handling major incidents ( P1/ p2 ) & escalations across VOIP -IPIC IMS environment

One point of connect for the Incident & escalations for VOIP interconnects

Expertise in product support for VOIP devices such as Session border controllers, Voice Gateways and SS7 Gateways

Expertise in NOC support for VOIP network

Single point of contact for the customers

Expertise in triaging issues and good handling of troubleshooting customer problems

Expertise in analysis of network tools such as Wireshark, Tcpdump Technical Summary

1. Expert in Telecom protocol such as DOCSIS 3.0 & 3.1, SIP, H323, NGN, SS7 and RTP. 2. Possessed Knowledge on Linux Commands, Databases such as MySQL basic commands. 3. Good Hands on Equipment’s in Telecom product vendors such as Sonus 1k/2k SBCs, Sonus PSX ( Policy Server ),Genband S3 SBC, Genband C3/G9 Gateways, Oracle/ACME Packet SBC, Sonus SBC NBS5200, Sansay SBC, Asterisk, Freeswitch, Nokia Interconnect SBC, Nokia 5060MGC8andNokia7610BGW,Titan Net-number Routing Enginee, Radcom analysis tool

4. Integration of Ribbon/Sonus SBC with Skype for Business/Lync server, Integration of Ribbon/Sonus SBC with Microsoft teams direct routing, 5. Cisco PGW ( PSTN Gateway with circuit switched ), Cisco Media Gateway’s ( ISDN protocol ), Net-cool NMS, Asterisk Applications, WebRTC,LINUX, TCP & UDP protocols, SIP, H3223, SS7, SNMP, IPSEC protocols and other VOIP SIP based devices, SIP Proxy, Soft Switch, Calling Card, and Soft Phones.

6. Experience in Mysql DB, Basics of Oracle DB and Jboss 7. Basic networking knowledge on switches & routers EDUCATION

2003 – 2006 Bachelor of Science - Computer Science Madras University, Chennai, India

WORK HISTORY

Current employer

2020 – 2022

2016 – 2020

Devops & Incident management Engineer KPN,Netherlands Test Engineer Eurofins Germany ( Client : Vodafone / Unitymedia ) Tech Lead Infinite Computer Solutions ( Client : Ribbon communications ) 2014 – 2015 Assistant Manager Voicetec Business private limited 2013 – 2014 Senior Engineer Sify Technologies Limited 2010 – 2013 Senior VOIP Engineer Flightcase IT services Limited 2006 – 2010 Engineer Sify Technologies Limited

Certifications

KEY

DELIVERABLES

CCNA

IITL-V3 ( in progress )

• Analyse customer’s requirements, and develop issue resolving methods and debug network problems faced by them.

• Supervise, oversee and support the sub-ordinates during the installation and execution class IV and class V switches and Signaling Gateways

• Establish strong and healthy relationships with customers through electronic and telephonic medium.

• Research and network the telecommunications related queries based on protocols such as SIP, SS7, SIGTRAN, and other related protocols to design and establish the hardware after resolving the bugs.

• Co-ordinate with the teams of engineers and technologists in installation and implementation of class IV and class V switches and Signaling Gateways such as Genband/Sonus/ACME/Cisco Vendors.

• Maintenance and upgrading all the network systems and telecommunications infrastructure of Cisco’s ISP Customers.

• Planning and execution of a Database backup and restoration of Network system and telecommunication devices.

• Assisting customer with configuration and log analysis at the time of critical outage and restoring production back to normal with least possible business impact.

• Mentoring and training new engineers who join the production support team. KEY PROJECTS

#Project 1

Description

Devops & Incident management - Managing KPN IMS network - IPIC

Handling major incidents ( P1/ p2 ) across VOIP -IPIC IMS environment

Coordinate bridge calls internally, externally with vendor teams

Provide timely and accurate communications to the stake holders

Providing Root cause analysis (RCA )

Identifying recurring issues and work with problem and change management teams

Working on the ticketing tools Service now, Zsmart, Jira

Handling incidents based on ITIL SLA’s compliance, KPIS, MTTR and incident trends

#Project 2

Description

Handling KPN IMS- IP interconnectivity customer tickets through Astrid ticketing tool

Analyzing customer tickets through Radcom – packet analyzer and session analyzer tool

Investigation of RTP/Media voice quality issues through Radcom tracing tool and wireshark tool

Preparing method of procedures ( MOPs ) for the configuration and Migrating Telco customers through Nokia SBC ( SFW ) nodes

Configuration and adding SIP routing and trunking through Nokia 5060 MGC8 nodes

Configuration and adding Media Gateways on the Nokia 7610 BGW pool list

Adding the new projects and story points in the Jira tool

Presentation of daily voice call and attending bi-weekly Sprint call meetings

On call duty through the Opsgenie tool

Certification of new technical courses and knowledge gain through KPN Academy Client : Vodafone

Testing of Cable modem/CPE – Docsis 3.0 and 3.1 version Cable modem :

Provisioning in generall ( C-Sphire, SBC Portal)

Writting / updating configuration files / boot files

Remote management via SNMP

Remote management via TR-069

Packet analysis via Wireshark

Voice :

Voice quality

Jitter

Echo return loss, HF, DTMF, Ringing tone, etc…

SIP Tones Validation using Audacity

Gateway :

Gateway basic functionality ( all eRouter modes)

Firewall & Port forwarding & IPv6 Host Exposure

Speed test via Byteblower

VPN Pass-through

Wifi :

Wifi Basic functionality (connection to 2.4Ghz/5Ghz, WPS, channel, band, etc..)

Wifi interoperability

Wifi performance

Wifi Multi client test

Security

Portscan

Remote access - Shell & Root shell access & MSO GUI

#Project 3

Description

Successful POC completion of Sonus 1k/2k SBCs with Enterprise customer network

Successful Registration of IP Phones with SBCs

Configuration of short codes /Extension dialling for enterprise Users configured in SBC

Configuration of PSTN /Off-net calls for enterprise Users configured in SBC

Configuration of H263/H264 codecs for Video calls for enterprise User configured in SBC

Configuration of different dial plans such as international, national, local digits for enterprise Users configured in SBC

Configuration of supplementary services such as Call hold & retrieve, Music on hold, Call forwarding, Call transfer, DTMF

Configuration of business continuity or site survivability for SIP clients through built-in SIP registrar in SBC when WAN link goes down

Configuration of Call Admission Control (CAC ), DSCP/Diffserv Marking for enterprise users in SBC

#Project 4

Description

Integration and Operations in ACME Packet Controller (Net-Net 5200)

Setting up system configuration using the MIUs (management interfaces) and NIUs

(physical interfaces)

High Availability configurations

Managing users using System Access Control lists

Configuration of Ingress, Egress Realms and Nested Realms

Configuration of steering Pools

Setting up B2BUA for peering and Hosted IP services ( OBP)

Configuration of SIP HMR and Parameter manipulation

Configuration of Session Agents, Session Groups and Local policy

Creating Number translation rules

Creating CAC and QOS level configurations

Implementing the Transcoding for Codec level manipulations

Troubleshooting the issues through CDRs and PCAP traces

Monitoring the system performance using CLI commands

Working with support team for the issues and business escalations

#Project 4

Description

Integration & Operations in Sonus NBS5200

Setting up the Address context, Zone and Trunk groups

Configuration of new SIP Signalling port

Configuration of ACL to accomplish traffic control and to prevent DOS attacks

Configuration of CAC on Zones, Trunk groups, SIP Endpoints

Implementing Screening services, Blocking services and Call Type Filtering services

Configuration of SIP trunks over UDP, TCP and TLS

Implementing SIP Profiles for CAC, Cause code mapping, Message manipulation and Header rules

Implementing new CODEC policies, Transcoding policies and DTMF digits

Controlling the routing policies through Digit manipulation rules and local database

Implementing different types of routing - Standard destination based routing; Origination entity based routing, leading digit routing

Traffic monitoring and performance Reporting using the EMS

Managing the user roles and responsibilities

Configuration of Signalling, Media, Route and Call service profiles

Troubleshooting issues through CDRs, Call trace and Alarms

Configuration Import/Export, System backup and restore, License management, session management through EMS GUI

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