محمد فهيم

Scalable, highly available and fail safe SIP infrastructure implementation for cpaas platforms. Cloud agnostic and scalable telecom infrastructure deployment using Opensource SIP platforms. Hands on AWS, OCI, Openstack and Alibaba cloud platforms. IaaC implementation for voice infra deployment using AWS terraform. SIP termination with GCC telecom operators.

• Design and maintenance of distributed telephony/call center solutions for supporting logistics business across GCC and North Africa.
• Development of auto dialer solution for automatic delivery scheduling system for logistic business.
• Development of SIP Edge proxy Server for high capacity and calls load distribution among multiple call centers.
• Configuration and maintenance of SS7/PRI lines and SIP trunks.
• Corporate telephony system setup and maintenance using Open source technologies.
• Development of automated health checks SIP NMS application for monitoring PRI Lines and SIP trunks.
• Daily call report analysis for business trend prediction and capacity planning of call center expansion.

I was responsible for the design, development and maintenance of distributed IP Telephony systems.

• PJSIP/Asterisk based complete office PBX System development
• WebRTC based SIP Client integration for Call centers
• DGS World Call center - telephony development and maintenance
• SIP Trunking and Signaling issue tracing.
• Implementation of Video Conferencing system using FreeSWITCH

• Residential VoIP Telephony System Development
• VoIP Service Manager - Web based Sniffer Application
• vTiger CRM integration with VoIP Server
• Fajar Azan Telephony Service - A Prayer Alert Telephony Service
• Firewall Manager - Web Application
• SMSC Failure Alert Application
• Bulk Marketing Calls - Web based Auto Dialer Application

• Implementation of residential VoIP Telephony Service for 6ginternet.co.uk (ISP).
• Implementation of Progressive dialing algorithm.
• TDM/PRI Gateways setup for wholesales customers.

I was responsible for design and development of distributed IP Telephony Services for a large scale class5 calling system.

• Design, implementation and deployment of VoIP services for various open source platforms including Asterisk, FreeSWITCH, and OpenSIPS

• Call rate web service for Vopium A/S SIP client applications using LAMP

• Design and implementation of High Availability Linux Cluster, providing Failover for SIP users

• Development and bug fixing of call routing and billing services using Asterisk and Perl AGI’s

• Inbound Call centre setup using Asterisk

• VoIP Systems Stress Testing using SIPp and WinSIP for SIP and PSTN terminated calls.

• Apple push notification and Android C2DM/GCM messaging service development and integration with OpenSIPS for offline subscribers.

I was responsible for implementing the source code verification tools for Mentor Graphics Operating
System Stack for embedded systems.
Media Routes

I was responsible for implementing the customized billing applications for Media Routes telephony platforms.

I worked as malware researcher and deep packet inspection engineer for FireEye Security appliance FE4200.