Session Border Controller (12 month contract)

SUMMARY:
A client of ours is looking for a passionate Session Border Controller for a 12 month period to join their team

POSITION INFO:
Location:
Sandton, Johannesburg

Requirements:

• Minimum 10 years’ experience
• Expertise in quality of service (QoS), traffic shaping, and SIP trunking
• Understanding of network infrastructure, including IP routing, firewalls, and load balancers
• Experience with network tools for monitoring and troubleshooting (Wireshark etc.)
• Familiarity with SBC vendors such as Cisco, Oracle, AudioCodes, Ribbon Communications, or Acme Packet
• Knowledge of security protocols (TLS, SRTP, IPsec, etc.)
• Proficiency in VoIP protocols (SIP, RTP, etc.) and SBC-specific technologies

• Install, configure, and deploy SBCs in VoIP and UC environments
• Ensure that the SBC is properly integrated with the existing network infrastructure, including SIP servers, gateways, firewalls, and other telecom equipment
• Apply necessary software patches, updates, and license management to keep the SBC secure and functional.
  Security Management
• Ensure secure communication by enabling encryption protocols such as TLS for signaling and SRTP for media streams. Configure firewall traversal mechanisms
• Implement security policies that protect against attacks like DoS and DDoS and ensure session integrity
• Implement access control policies to prevent unauthorized access to the network and its services

• Configure the SBC to manage and optimise traffic flows, ensuring that voice and video quality meet expected standards
• Implement load balancing across multiple servers or SBCs to prevent network congestion and maintain service reliability
• Ensure effective routing of calls across various networks (e.g., internal VoIP networks, external carriers, etc.), optimising for both quality and cost

• Diagnose and resolve issues related to call failures, quality degradation (jitter, packet loss, latency), and connectivity problems
• Utilise SBC logging and monitoring tools to trace and analyse call signaling and media flows, identifying bottlenecks or security threats
• Continuously monitor SBC performance, ensuring that thresholds for critical parameters (like CPU, memory, and traffic load) are not exceeded

• Ensure that the SBC interoperates correctly with various equipment from different vendors, such as SIP servers, gateways, and PBXs
• Test and validate support for various protocols and codecs (SIP, H.323, WebRTC, etc.), ensuring compatibility and optimal performance
• Documentation and Compliance:
  -Maintain accurate records of SBC configurations, network topology, troubleshooting steps, and changes made to the system
  Ensure that SBC configurations adhere to industry standards, security policies, and regulatory requirements
• Collaboration and Knowledge Sharing:
• Work closely with network and firewall engineers, system administrators, and telecom teams to ensure the SBC is aligned with the overall network design

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