Job Title : SIP Device Onboarding Engineer (New Device Support)

Experience : 8+ Years

Location : Hyderabad

The role requires strong hands-on experience in SIP signaling, VoIP call flows, troubleshooting, certification testing, and provisioning workflows. Candidates should have excellent analytical skills and the ability to work closely with engineering, QA, product, and OEM vendors to deliver certified and production-ready SIP device integrations.

Key Responsibilities :

- Design, configure, onboard, and validate new SIP devices for enterprise VoIP platforms.

- Perform end-to-end SIP device provisioning using predefined SBC configurations and provisioning templates.

Configure SIP endpoints for :

1. SIP Registration

2. SIP Authentication

3. TLS/SSL Certificates

4. Audio Codecs

5. DTMF Signaling

6. Dial Plans

7. Call Routing

8. Feature Configuration

- Validate device interoperability with supported SBC platforms and SIP infrastructures.

- Analyze SIP signaling and troubleshoot registration, call setup, media, and interoperability issues.

- Capture and analyze SIP traces using protocol analyzers such as Wireshark.

Troubleshoot :

1. SIP Registration Failures

2. Authentication Issues

3. Call Setup Failures

4. One-way Audio

5. RTP/Media Negotiation

6. Codec Mismatches

7. NAT Traversal Issues

8. TLS/Certificate Problems

9. SIP Header Manipulation Issues

10. Device Firmware Compatibility Issues

- Create, customize, and maintain provisioning templates for supported SIP devices.

- Develop onboarding documentation, provisioning guides, and validation checklists.

- Perform certification testing for newly supported SIP endpoints.

- Validate feature compatibility across multiple firmware versions.

- Identify unsupported device capabilities and document product limitations.

- Collaborate with OEM vendors for firmware issues and interoperability enhancements.

- Participate in defect triage, root cause analysis, and issue resolution.

- Create repeatable onboarding processes to improve deployment efficiency.

- Work closely with Product Management, QA, Customer Support, and Engineering teams throughout the device certification lifecycle.

Required Skills :

VoIP & SIP :

- Strong understanding of SIP protocol (RFC 3261) and VoIP technologies.

- Deep knowledge of SIP signaling and call flow analysis.

- Hands-on experience with SIP endpoint onboarding and provisioning.

- Experience configuring enterprise SIP phones and SIP endpoints.

- Knowledge of RTP, SRTP, SDP, ICE, STUN, TURN, and NAT traversal.

- Understanding of SIP Digest Authentication and TLS security.

Device Provisioning :

- SIP Device Configuration

- Provisioning Templates

- Auto-Provisioning

- Any enterprise SIP SBC

Protocols :

- SIP

- SDP

- RTP

- SRTP

- TLS

- TCP

- UDP

- Any VoIP or Unified Communications certification