# Troubleshoot

- [Getting "Missing table" error during invoice generation](/troubleshoot/getting-missing-table-error-during-invoice-generation.md)
- [Switch can't process more than 30K ports](/troubleshoot/switch-cant-process-more-than-30k-ports.md)
- [How many calls are client sending](/troubleshoot/how-many-calls-are-client-sending.md)
- [Call Failure](/troubleshoot/call-failure.md)
- [Enforce Valid DNIS Length](/troubleshoot/enforce-valid-dnis-length.md)
- [Enforce E164 Format for Vendor Trunk](/troubleshoot/enforce-e164-format-for-vendor-trunk.md)
- [Configure VoIP Switch in UI](/troubleshoot/configure-voip-switch-in-ui.md)
- [SIP Switch is Down](/troubleshoot/sip-switch-is-down.md)
- [Validate Auto-Invoice Rule](/troubleshoot/validate-auto-invoice-rule.md)