Claim record · CUCM CDR and CMR field reference
The duration field is zero both when a call never connects and when it connects for less than one second, so a duration of zero is not evidence that a call was never answered.
fact · verified 2026-09-15
This field remains zero if the call never connects or if it connects for less than 1 second.
- Vendor
- Cisco
- Product
- Cisco Unified Communications Manager
- Subsystem
- Call detail records
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Release 15 and service updates
- Status
- fact
- Confidence
- 0.90
- Verified
- 2026-09-15
Sources
- Call Reporting and Billing Administration Guide for Cisco Unified Communications Manager Release 15 and SUs, CDR Field Descriptions — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · CDR Field Descriptions, duration
Cite this claim
APA
WarmTransfer. (2026, September 15). CUCM CDR and CMR field reference: claim cucmcdr-duration-is-zero-below-one-second. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucmcdr-duration-is-zero-below-one-second
BibTeX
@misc{warmtransfer-claim-cucmcdr-duration-is-zero-below-one-second,
title = {CUCM CDR and CMR field reference: claim cucmcdr-duration-is-zero-below-one-second},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucmcdr-duration-is-zero-below-one-second},
note = {Claim cucmcdr-duration-is-zero-below-one-second, verified 2026-09-15}
}