IZONE Solutions

IT Engineer – IPPBX (Operational)

  • Tech & Communications (Telecommunications and Networking)
  • 04/03/2026 - 31/03/2026
  • On-site
  • Full time
  • Telecommunications
  • Networking
  • Transmission Network
  • VoIP Network
  • Telephon Network
  • Network Operations Center
  • Network Monitoring
Job Purpose:

To design, implement, manage, and optimize the company’s IP Telephony and Unified Communications infrastructure, ensuring high availability, security, and seamless integration across SIP trunks, GSM gateways, analog/FXO/FXS interfaces, and ISDN lines. The role supports both internal operations and client projects, acting as the technical authority for all voice-related solutions.

- Key Tasks & Responsibilities:


  • Design, deploy, configure, and maintain IP-PBX platforms such as Grandstream, Asterisk-based systems, 3CX, Yeastar, Cisco, and Avaya.
  • Configure, deploy, and troubleshoot VoIP endpoints, softphones, and call routing configurations to ensure reliable communication services.
  • Manage and optimize SIP-based communication systems, including SIP signaling, SDP, RTP, NAT traversal, codecs, and QoS mechanisms.
  • Implement and integrate Unified Communication solutions, including voice, video, messaging, conferencing, and collaboration tools.
  • Configure and maintain SIP trunks, GSM-SIP gateways, analog-SIP gateways, and telephony interfaces including FXO/FXS and ISDN BRI/PRI lines.
  • Ensure proper network configuration for voice services, including VLANs, QoS policies, firewall rules, NAT, and Session Border Controllers (SBCs).
  • Monitor and optimize voice quality and reliability across LAN and WAN environments.
  • Lead the deployment and implementation of IP telephony solutions for client projects.
  • Prepare technical documentation, network diagrams, and implementation plans for voice infrastructure.
  • Provide Level 3 (L3) technical support for complex or escalated telephony and VoIP issues.

- Work Conditions:


  • Regular Employment
  • Hybrid
  • Damascus Governorate - G74G+VPW, Damascus, Syria

- Job Requirements


  • Education Degree: Bachelor
  • Field Of Experience: hands on experience with IP PBX systems (Grandstream, Asterisk, 3CX, Yeastar, Cisco, Avaya).
    Years Of Experience: 5 years