The CAPF authentication string used by a JTAPI or TSP client to obtain its certificate is 4 to 10 digits and can be used only once.
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 > CAPF profile settings, Authentication String
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting CTI applications that cannot control phones in Unified CM: source note cucm-cti-troubleshooting-capf-auth-string-one-time. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-cti-troubleshooting-capf-auth-string-one-time
BibTeX
@misc{warmtransfer-claim-cucm-cti-troubleshooting-capf-auth-string-one-time,
title = {Troubleshooting CTI applications that cannot control phones in Unified CM: source note cucm-cti-troubleshooting-capf-auth-string-one-time},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-cti-troubleshooting-capf-auth-string-one-time},
note = {Source note cucm-cti-troubleshooting-capf-auth-string-one-time, checked 2026-10-02}
}