VoIP & Network Technical Support (NOT General IT Support)

Overview

We are seeking an experienced 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. This is NOT a desktop support or general IT helpdesk.

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, 180/183)
• Perform deep-dive troubleshooting using packet captures (Wireshark or similar)
• Configure and optimize routers, firewalls, VLANs, and QoS for VoIP
• Assist with PBX configuration: call routing, IVRs, ring groups, failover routes...