If restrictions prevent a CTI application from monitoring or controlling a device or directory number, CTIManager does not send it the keying material for that device or line.
Checked 2026-10-02
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- Secure CTI
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Release 15 and SUs
- Checked
- 2026-10-02
Sources
- Security Guide for Cisco Unified Communications Manager Release 15 - Authentication and Encryption Setup for CTI, JTAPI, and TAPI — Cisco Systems · tier 2 current vendor documentation · Authentication and Encryption Setup for CTI, JTAPI, and TAPI > SRTP key material requirements (restrictions)
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting CTI applications that cannot control phones in Unified CM: source note cucm-cti-troubleshooting-no-keys-when-restricted. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-cti-troubleshooting-no-keys-when-restricted
BibTeX
@misc{warmtransfer-claim-cucm-cti-troubleshooting-no-keys-when-restricted,
title = {Troubleshooting CTI applications that cannot control phones in Unified CM: source note cucm-cti-troubleshooting-no-keys-when-restricted},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-cti-troubleshooting-no-keys-when-restricted},
note = {Source note cucm-cti-troubleshooting-no-keys-when-restricted, checked 2026-10-02}
}