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.
• Solid 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.

Good to

📌 Voice Engineer (Ahmedabad)
🏢 Ishan Technologies
📍 Ahmedabad