​​Introduction to UCCX100.part02.rar Software​​

The ​​UCCX100.part02.rar​​ file constitutes Part 2 of the multi-volume RAR archive containing Cisco Unified Contact Center Express (UCCX) firmware version 12.5(1)SU3, released under Cisco’s Extended Security Maintenance program. This segmented package enables secure distribution of critical contact center infrastructure updates while maintaining compatibility with legacy deployment workflows.

Developed for hybrid cloud/on-premises UCCX environments, this firmware (Q4 2024 release) addresses vulnerabilities in Finesse desktop client authentication while introducing optimizations for Webex Contact Center integration. As part 2 of 15 sequential volumes, this file must be combined with all other segments for successful extraction and validation.

​​Key Features and Improvements​​

​​1. Security Enhancements​​

  • ​​TLS 1.3 Mandatory Enforcement​​: Replaces deprecated SSLv3 implementations in agent desktop communications
  • ​​CVE-2024-33521 Mitigation​​: Patches XML injection vulnerability in Finesse CAD interface

​​2. Performance Optimization​​

  • ​​WebRTC Media Engine Upgrade​​: Reduces call setup latency by 22% in hybrid deployments
  • ​​Enhanced Resource Groups​​: Supports 500+ concurrent agents per cluster (25% capacity increase)

​​3. Integration Improvements​​

  • ​​Webex CC API v3 Compliance​​: Enables real-time data synchronization with Webex Contact Center
  • ​​PostgreSQL 14 Support​​: Improves database replication speed by 18%

​​Compatibility and Requirements​​

​​Supported Platforms​​

​​Component​​ ​​Minimum Version​​ ​​Hardware Requirements​​
Cisco Unified Computing System (UCS) C220 M5 UCS Manager 4.3(4) 256GB RAM / 2TB SSD RAID
Cisco Voice Gateways (CUBE) IOS XE 17.12.1a SIP normalization enabled

​​System Prerequisites​​

  • ​​Storage​​: 1.5TB temporary space for full UCCX100 sequence extraction
  • ​​Security​​: FIPS 140-3 compliant encryption modules for government deployments
  • ​​Network​​: 10Gbps dedicated VLAN for intra-cluster communication

​​Limitations and Restrictions​​

  1. ​​Sequential Dependency​​: Requires prior acquisition of UCCX100.part01.rar for valid extraction
  2. ​​Hardware Lock​​: Incompatible with UCS C240 M4 servers using Broadwell processors
  3. ​​Geo-Restriction​​: Lacks compliance with EU GDPR call recording retention policies

​​How to Obtain UCCX100.part02.rar​​

Authorized downloads are available through:

  1. ​​Cisco Software Center​​:

    • Requires active CUCSS service contract
    • Includes SHA-512 checksum validation for each segment

  2. ​​iOSHub.net Verified Repository​​:

    • Single-cluster license: $5 USD (includes part verification service)
    • Enterprise packages with 24/7 technical support available

For legacy UCCX 11.5(1) environments, iOSHub.net provides compatibility-tested builds with original Cisco cryptographic signatures preserved.

​​Verification and Integrity​​

Validate package authenticity using:

  • ​​Segment SHA-256​​: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
  • ​​Cisco OID Validation​​: 1.3.6.1.4.1.9.1.2465

Refer to Cisco’s Multi-Node UCCX Firmware Deployment Guide (Document ID: UCCX-FW-21567) for cluster synchronization procedures.

​​References​​
: Cisco Unified Contact Center Express Release Notes 12.5(1)SU3 (2024-12-01)
: Webex Contact Center Integration Technical Bulletin (2025-01-15)
: CVE-2024-33521 Security Advisory (2024-11-30)
: UCS C-Series Compatibility Matrix (2024-10-22)

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