In Unified CM CDRs, call termination cause code 1 means Unallocated (unassigned) number.
Checked 2026-09-30
- Vendor
- Cisco
- Product
- Cisco Unified Communications Manager
- Subsystem
- CDR cause codes
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 15 and SUs
- Checked
- 2026-09-30
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 > Table 4 Call Termination Cause Codes, code 1
Cite this note
APA
WarmTransfer. (2026, September 30). Troubleshooting Unified CM call routing failures and reorder tone: source note cucm-call-routing-failures-cause-1-unallocated. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-call-routing-failures-cause-1-unallocated
BibTeX
@misc{warmtransfer-claim-cucm-call-routing-failures-cause-1-unallocated,
title = {Troubleshooting Unified CM call routing failures and reorder tone: source note cucm-call-routing-failures-cause-1-unallocated},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-call-routing-failures-cause-1-unallocated},
note = {Source note cucm-call-routing-failures-cause-1-unallocated, checked 2026-09-30}
}