BugZero | Cisco BugID CSCvf38320 - modem passthrough call fails due to long PSTN(voip...

Cisco - Defect ID: CSCvf38320

modem passthrough call fails due to long PSTN(voip hop) delay

Cisco - Defect ID: CSCvf38320

modem passthrough call fails due to long PSTN(voip hop) delay

Last updated on February 25th, 2026

BugZero Risk Score
6.1 Medium

Overall: 6.1

Severity: 6.4

Lifecycle: 9.1

Popularity: 4.6

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Bug Details

Description

Symptom

modem fail in time sensitive handshake stage

Conditions

when there is long delay, such as voip on the telco interface

Workaround

none

Further Problem Description

Change history

2026-02-25 changed to Moderate

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Cisco - Defect ID: CSCvf38320

modem passthrough call fails due to long PSTN(voip hop) delay

Cisco - Defect ID: CSCvf38320

modem passthrough call fails due to long PSTN(voip hop) delay

Last updated on February 25th, 2026

BugZero Risk Score6.1 Medium

Bug Details

Symptom

Conditions

Workaround

Further Problem Description

Links

Top Cisco Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
6.1 Medium