Multi-Vendor Edge Network and VoIP PBX Integration
Pain Points (Public)
Distributed branch offices deploying heterogeneous network hardware—such as 5G cellular routers, dual-WAN edge appliances, and on-premises IP PBX systems—frequently experience broken SIP registration, one-way audio, and unstable site-to-site VPN tunnels due to carrier-grade NAT (CGNAT) and conflicting routing or ALG policies.
Suggested Approach (Public)
Audit multi-vendor gateway routing and deploy a cloud VPS running WireGuard or IPsec as an intermediate relay for NAT traversal, while disabling problematic SIP ALG inspection and tuning keepalive intervals and port forwarding on the local PBX.
Metrics (Public)
Statistics window：Weekly 2026-09-02 – 2026-09-08
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Public Demand Evidence · 2 task(s)
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