**ALL RESUMES MUST BE IN ENGLISH.
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**This is NOT a desktop support role.
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If your background is mainly **desktop support, Microsoft troubleshooting, software/hardware repair, or general IT helpdesk**, please do not apply.
We are seeking an experienced **Tier 2 VoIP & Network Technician** who can handle escalations, advanced troubleshooting, and deeper network analysis in a fast-paced telecom environment.
This role requires strong knowledge of **SIP protocols, PBX systems, routing, switching, and network performance diagnostics.
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What You'll Do (Tier 2 responsibilities)
- Resolve escalated VoIP issues: SIP registration failures, unidirectional audio, NAT traversal, codec mismatches
- Diagnose advanced network problems: packet loss, throughput issues, VLAN misconfigurations, routing loops
- Analyze call flow and SIP messaging (INVITE, ACK, BYE, 200 OK, *******)
- Perform deep-dive troubleshooting using packet captures (Wireshark or...