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Engineering Blog

Wires, routers, and SIM cards.

Deep-dives into Asterisk 20 dialplans, SIP trunk security, GSM gateway latency, and desk phone provisioning architectures.

Engineering Oct 12

Tuning Asterisk 20 Dialplans for Sub-50ms Latency

We analyzed thousands of concurrent SIP dialogs to optimize our default dialplan generation. Here's how we reduced call setup latency down to 42ms on local network extensions.

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Security Sep 28

Securing SIP Trunks Against Brute-Force Scanning

A breakdown of the fail2ban jails and iptables rules automatically configured on every Wivox installation to drop sipvicious scanners silently.

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Architecture Sep 14

The Architecture of Zero-Touch Desk Phone Provisioning

How our DHCP Option 66 interceptor dynamically serves Grandstream, Yealink, and Polycom MAC-specific XML configurations without manual intervention.

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