Cisco's JTAPI installation guide states that upgraded JTAPI client software does not work with previous releases of Unified CM.
Checked 2026-10-02
Upgraded JTAPI client software does not work with previous releases of Cisco Unified Communications Manager.
- Vendor
- Cisco
- Product
- Unified CM JTAPI
- Subsystem
- Version compatibility
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Release 15 and SUs
- Checked
- 2026-10-02
Sources
- Cisco Unified JTAPI Developers Guide for Cisco Unified Communications Manager, Release 15 and SUs - Cisco Unified JTAPI Installation — Cisco Systems · tier 2 current vendor documentation · Cisco Unified JTAPI Installation > upgrade note
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting CTI applications that cannot control phones in Unified CM: source note cucm-cti-troubleshooting-upgraded-jtapi-not-backward. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-cti-troubleshooting-upgraded-jtapi-not-backward
BibTeX
@misc{warmtransfer-claim-cucm-cti-troubleshooting-upgraded-jtapi-not-backward,
title = {Troubleshooting CTI applications that cannot control phones in Unified CM: source note cucm-cti-troubleshooting-upgraded-jtapi-not-backward},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-cti-troubleshooting-upgraded-jtapi-not-backward},
note = {Source note cucm-cti-troubleshooting-upgraded-jtapi-not-backward, checked 2026-10-02}
}