SBC Interoperability & Configuration Specialist - Routing & Switching

Job Summary :

We are looking for a highly skilled SBC (Session Border Controller) Interoperability & Configuration Specialist with strong expertise in SIP signaling, VoIP protocols, and real-time communication systems.

The ideal candidate will be responsible for configuring, testing, troubleshooting, and validating SIP interoperability scenarios across enterprise voice devices, SBC platforms, IP-PBX systems, and carrier networks.

The role requires deep hands-on experience with SIP protocol behavior, RTP/SRTP media handling, NAT traversal, TLS/certificate management, codec negotiation, and SIP device interoperability debugging. Candidates should have practical exposure to open-source SBC and SIP proxy technologies such as OpenSIPS, Kamailio, FreeSWITCH, or Asterisk in production-like or lab environments.

The candidate will work closely with engineering, QA, product, and support teams to build reusable interoperability configurations, validate device compatibility, and improve deployment reliability for enterprise voice and unified communication solutions.

Key Responsibilities :

SIP & VoIP Interoperability :

Analyze, troubleshoot, and resolve SIP interoperability issues between :

- SIP phones

- IP-PBX systems

- SBCs

- SIP trunks

- Softphones

- Carrier platforms

- UC applications

Investigate SIP signaling issues related to :

- Call setup and teardown

- Registration failures

- Authentication challenges

- Codec mismatches

- One-way/no-audio problems

- DTMF failures

- Call transfer and conferencing issues

- Validate interoperability across multiple SIP vendors and third-party telecom devices.

- Perform protocol-level debugging using SIP traces, packet captures, and media analysis tools.

SBC Configuration & Administration :

- Configure and maintain Session Border Controllers (SBCs), SIP proxies, and media gateways for enterprise VoIP deployments.

- Build and troubleshoot SIP routing logic, dial plans, header manipulations, NAT traversal policies, and

media anchoring configurations.

Work with SBC features including :

- SIP normalization

- Topology hiding

- TLS/SRTP security

- Session routing