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Kawsar Ahmed
@ahrasel1998
Expert in AWS, 3cx, Voip solution, Web Development, Wordpress
Noruega
Bengali, Hindi, Inglês
Sobre mim
I'm am an Expert system admin in AWS, Voip solution, 3cx, Freepbx, Portaone, Fusion etc. Contact me if you need any assistance from me. Hopefully, I will be able to help. I also have many years experience in web development in major cms.
Habilidades
Kawsar Ahmed
offline •
Conheça meus serviços
Wordpress
I will build premium business or personal website in wordpress
Backup e Migração
I will migrate or customize wordpress website
Portfólio
Experiência profissional
Senior System Administrator
VoIP Business • Período integral
Dec 2021 - Present • 4 yrs 6 mos
• Providing L2/L3 escalation for SIP call failures, one-way audio, codec mismatches, and NAT issues Wireshark SIP/RTP PCAP analysis to identify signaling and media- path problems. • Supporting STIR/SHAKEN call authentication, E911 routing validation, and FCC Form 499 traffic classification. • 10DLC (A2P SMS) campaign onboarding and compliance troubleshooting. • Deploying and supporting AWS-hosted VoIP solutions integrated with on-prem systems. • Supporting PBX and UC platforms including PortaOne, 3CX, Asterisk, FreePBX, Yeastar, and Grandstream. • Work closely with NOC teams, upstream carriers, SMS aggregators, and vendors as a primary escalation point, focusing on reliability and compliance.
479 Avaliações
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| (26) | ||
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| (5) | ||
| (7) |
Classificação detalhada
- Nível de comunicação do freelancer
- Qualidade da entrega
- Valor da entrega
1-5 fora das 479 avaliações
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asakib911
Bangladesh
nice work as it was beyond my expectations and I will be back for more
Até US$ 50
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2 dias
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amenkhd
Cliente recorrente
Estados Unidos
Finished the work fast and maintained cautions. Highly appreciated. I will definitely recommend him as i have been doing some other work with him as well and he never disappoints me, he is cooperative and provided me quality work always
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emily_jhns
Canadá
It was fast and great service. Got $650 in profit from the trade. Impressive work and highly recommended.
Até US$ 50
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amenkhd
Cliente recorrente
Estados Unidos
Good work man. I will be your regular customer from now.
Até US$ 50
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shobi2024
Estados Unidos
Perfect setups & executions, He caught up decent entries during volatility while risking nothing. I got some good gains and trades are still running. I will continue working with you. Highly recommended
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