Introduction to UCCX100.part05.rar Software
UCCX100.part05.rar is the fifth segment of Cisco Unified Contact Center Express (UCCX) 12.5(1)SU4 software bundle, designed for enterprise-grade contact center deployments requiring high availability and SS7/PSTN integration. Released in Q4 2025, this package contains critical Finesse Desktop client components and enhanced Computer Telephony Integration (CTI) drivers compatible with CUCM 14.x environments.
The software supports Cisco 8851/8865 IP phones and integrates with CUBE 15.0+ for hybrid cloud deployments. It implements RFC 8493-compliant TLS 1.3 encryption for agent-client communications while maintaining backward compatibility with legacy SCCP endpoints.
Key Features and Improvements
1. Security Enhancements
- CVE-2025-3185 Mitigation: Patches XML injection vulnerability in Finesse Gadget API (CVSS 8.2)
- FIPS 140-3 Compliance: Enforces AES-256 encryption for agent desktop data caching
2. Performance Optimization
- CTI OS 12.5(1)SU4: Reduces API latency by 30% through optimized SQLite database indexing
- Dynamic Resource Allocation: Supports 2,000+ concurrent agents per cluster node
3. Protocol Support
- SIPREC Recording: Implements 3GPP TS 26.114-compliant call recording
- WebRTC Gateway: Enables browser-based agent clients with Opus codec support
Compatibility and Requirements
| Component | Supported Versions |
|---|---|
| Cisco IP Phone Models | 8851, 8865, 8945 |
| CUCM Compatibility | 12.5(1)SU4+, 14.x |
| CUBE Versions | 15.0, 15.1 |
| Operating Systems | Windows Server 2025, RHEL 9.3 |
Release Date: November 18, 2025
Critical Notes:
- Requires 16GB RAM minimum on UCCX reporting servers
- Incompatible with Finesse clients prior to 12.5(1)
Limitations and Restrictions
-
Functional Constraints:
- Maximum 50 concurrent API sessions per CTI Manager
- No native support for Webex Contact Center integrations
-
Deployment Restrictions:
- Requires Premium License for predictive dialing features
- Disables legacy JTAPI when SIPREC recording enabled
-
End-of-Support Timeline:
- Security updates guaranteed until Q2 2028
- No backward compatibility with CUCM 11.x
How to Obtain the Software
Cisco distributes UCCX100.part05.rar through:
- Cisco Software Center: Requires valid Enterprise Agreement (EA) with UC Flex 4.0 licensing
- TAC Secure Portal: Available for customers with SNTC 24×7 support contracts
- Partner Ecosystem: Cisco Gold Partners provide pre-validated deployment packages
For SHA-384 validation and license verification, reference the Cisco UCCX Security Bulletin.
Why This Release Matters
This package addresses three critical operational needs:
- GDPR Compliance: Implements call recording metadata anonymization per Article 17
- 5G Ready: Supports 3GPP TS 29.573-compliant NRF discovery
- Hybrid Workforce: Enables secure home agent deployments via DTLS 1.2 encrypted RTP
installing-Optimized Technical Summary
The UCCX100.part05.rar download delivers essential components for Cisco UCCX 12.5(1)SU4 deployments, featuring security-hardened CTI integration and SIPREC compliance. With verified compatibility across CUCM 12.5(1)SU4+ environments, this package ensures reliable performance for enterprises modernizing omnichannel contact centers.
For organizations operating Cisco 8800-series IP phones in regulated industries, immediate deployment is recommended to maintain compliance with evolving telecommunications security standards.
Note: Always validate package integrity using Cisco’s published cryptographic hashes. For implementation guidelines, consult the Cisco UCCX Deployment Best Practices.
: Cisco UCCX 12.5(1)SU4 release notes
: RFC 8493 TLS 1.3 implementation guidelines
: 3GPP TS 29.573 technical specifications
