What did the gateway do?
Run debug ccsip, save the output, read 10,000 lines.
The capture rendered as call flows and a ladder, failures highlighted.
Gateway troubleshooting
Today, CUBE changes mean SSH, IOS syntax and the one engineer who remembers how the dial-peers fit together. A typo takes calls down; a debug capture takes an afternoon to read.
Run debug ccsip, save the output, read 10,000 lines.
The capture rendered as call flows and a ladder, failures highlighted.
Work out by hand which dial-peer should have matched.
Dial-peer decisions per leg; the simulator answers the fix before you dial.
Type the change in configure terminal and hope the syntax holds.
Validated form, verified CLI and audit trail; snapshots before templates and rollbacks.
Fixed – if the one engineer is in today.
Fixed, documented, reversible.
Worked example · Insight 03
Real volume on dial-peer 0 explained one-way audio and codec drops across the deployment.
Read the full caseA demo on a live system, then a proof of concept inside your network – fully offline if it has to be.