Role Summary

We are looking for a Voice Engineer with hands-on Oracle SBC experience to manage enterprise SIP Trunks, voice connectivity, troubleshooting, and L2/L3 support.

Key Responsibilities

- Configure, maintain, and troubleshoot Oracle SBC.
- Work on SIP Trunks, SIP routing, Realms, Session Agents, and Local Policies.
- Configure and troubleshoot SIP Header Manipulation (HMR).
- Engineering HLD/LLD creation
- Analyze SIP call flows and troubleshoot call failures.
- Troubleshoot one-way/no audio, DTMF, codec, CLI/DID, and RTP issues.
- Perform Wireshark/PCAP analysis for SIP and RTP troubleshooting.
- Coordinate with customers, carriers, network teams, and OEMs.
- Handle critical voice incidents and prepare RCA reports.
- Support Oracle SBC changes, migrations, upgrades, and HA environments where applicable.
- Oracle SBC Engineering
- Configure and support Oracle Communications SBC in enterprise and telecom environments.
- Configure and troubleshoot:
- Session Agents
- Realms
- SIP Interfaces
- Local Policies
- Session Agent Groups, where applicable
- SIP Trunks
- SIP routing
- SIP monitoring and OPTIONS-based reachability
- Configure inbound and outbound SIP traffic flows between:




- Enterprise IP-PBX
- SIP Trunk providers
- Carrier networks
- UC platforms
- Voice application platforms
- Perform Oracle SBC configuration changes, service activation, troubleshooting, and optimization.
- Support SBC redundancy/high-availability configurations where deployed.
- Participate in Oracle SBC upgrades, migrations, expansions, and configuration changes.

Mandatory Skills

- 3–6 years of Voice/SIP Engineering experience.
- Strong hands-on Oracle SBC experience.
- Strong knowledge of SIP and RTP.
- Experience with SIP Trunking.
- Hands-on knowledge of Session Agents, Realms, Local Policy, and HMR.
- Strong Wireshark/PCAP troubleshooting skills.
- Good understanding of TCP/IP, DNS, NAT, Firewalls, and Routing.
- Strong customer handling and troubleshooting skills.

Positive to Have
- Oracle SBC HA experience
- Microsoft Teams / IP-PBX integration
- SIP over TLS / SRTP
- Carrier interconnect experience
- Linux and basic scripting knowledge

Education Bachelor’s degree in IT, Computer Science, Electronics, Telecommunications, or related field.

📌 Voice Engineer - Oracle SBC (Ahmedabad)
🏢 Ishan Technologies
📍 Ahmedabad