Abul Barakath

Telecommunication professional with 12+ years of experience in Network Sub 
System (NSS) operations, core network management, and switch configuration
for major telecom operators. Skilled in Huawei and ZTE platforms with expertise
in GSM, PSTN, NLD/ILD, SS7, Sigtran, and NGN systems. Experience includes 
international interconnects and roaming (IREG) testing with multiple global and
GCC-aligned operators, ensuring compliance with UAE TRA and GCC telecom
standards. Known for delivering high-availability network services, optimizing 
ASR, CCR, PSR, ensuring minimal downtime in mission-critical environments.

Switch Engineer – Scube Controls
Feb 2020 – Jun 2025 | Chennai, India
◦ Operated and maintained ZTE Soft Switch (NGN) and MGW (NGN-UTSTAR).
◦ Provisioned and modified IP Centrex lines, SIP PRI IPs, POTs, PRI E1s within
agreed SLAs.
◦ Coordinated resolution of NGN switch issues for NLD/ILD calls, including 
GCC-aligned network configurations.
◦ Managed CCS7 and M3UA links, GT, Roaming, BSC links, PSTN trunks, ISDN
PRI creation.
◦ Conducted daily monitoring, SS7 link creation, BSC integration with MGW, 
and POI redundancy planning.
◦ Performed AT tests with other operators, LAC/CI creation, E1 integration for
VAS, CDR & BAM backups.
◦ Monitored traffic reports to address ASR, CCR, and PSR issues and resolved
active alarms in MSS/MGW. PSR issues and resolved active alarms in MSS/MGW.
▪ Switch Engineer – Tata Communications Transformation Services Ltd 
(Prompt Personnel Consultancy Services Pvt. Ltd)
Jan 2019 – Jan 2020 | Chennai, India
◦ Worked on ZTE Soft Switch (NGN), IMS Soft Switch, and MGW.
◦ Configured SIP trunks and PRI lines per customer requirements.
◦ Supported international interconnect and roaming configurations for multiple 
operator networks aligned with GCC telecom standards.

Senior Engineer – Tata Communications Transformation Services Ltd
Nov 2014 – Dec 2018 | Chennai, India
◦ Managed Huawei MSOFTX3000 and UMG8900 platforms.
◦ Created SS7 links, signalling routes, trunk groups, MSRN, and level openings.
◦ Analysed ISUP messages for troubleshooting and prepared performance reports.
◦ Conducted MNP migrations, patch loading, switch audits, and hardware 
redundancy checks.
◦ Coordinated with partner operators for cross-border voice/SMS interconnects, 
including GCC routing requirements.
• NSS Engineer – Huawei Telecommunications (India) Pvt Ltd
Feb 2012 – Nov 2014 | India
◦ Delivered NSS managed services for TATA Docomo and Uninor.
◦ Managed MSC server, MGW, IGWB, and 24/7 monitoring of network elements.
◦ Supported international and national roaming configurations with multiple
operators

▪ B.E. (Electrical and Electronics Engineering)
E.G.S. Pillay Engineering College, Anna University, 2008
▪ Diploma (Electrical and Electronics Engineering)
Thiru Seven Hills Polytechnic College, 2005