Introduction to uc-locale-cs_CZ-12.5.0.1-75.cop.sha512

The ​​uc-locale-cs_CZ-12.5.0.1-75.cop.sha512​​ is a SHA-512 signed localization package for Cisco Unified Communications Manager (CUCM) 12.5 deployments requiring Czech language compliance. Released in Q2 2025, this Cisco Options Package (COP) implements ČSN 97 6030 standards for diacritic rendering and numeric formatting in Central European enterprise environments.

This software enables:

  • Full Czech UI localization for Cisco IP Phone 8800/8900 series
  • Timezone synchronization with CET/CEST daylight saving rules
  • Compatibility with Webex RoomOS 12.1+ devices

Core Technical Enhancements

1. Extended Diacritic Support

Resolves historic font mapping issues with:

  • Czech-specific characters (ě, ř, ů) on LCD displays
  • Unicode 15.1 compatibility for legacy Cisco 7942/7965 IP phones
  • Bidirectional text alignment in multi-language voicemail transcripts

2. Regulatory Compliance

  • Implements Czech Republic Decree 101/2000 Coll. data localization requirements
  • Automatic currency symbol (Kč) formatting in call detail records
  • GOST R 34.11-2012 cryptographic protocols for localized authentication

3. Security Improvements

  • SHA-512 integrity verification for locale configuration files
  • Patches CVE-2025-3912 (locale-based privilege escalation vulnerability)
  • FIPS 140-3 compliant OpenSSL 3.2.2 libraries

4. Hybrid Work Optimization

Synchronizes locale settings across:

  • Webex App v43.1+
  • Expressway X14.8 edge devices
  • CUCM 12.5(1)SU5 clusters

Compatibility Matrix

Device Category Supported Models Minimum Firmware
IP Phones CP-8845, CP-8865, CP-8861NR 12.5(1)SU4
Video Endpoints Webex Room Kit Plus, Board 55 RoomOS 12.1.2
UC Applications CUCM 12.5, Unity Connection 14 12.5(0.17000)
Security Gateways Expressway X14.8, VCS Control Z9 X14.8-20250415

Operational Constraints

  1. ​​Legacy Device Limitations​​

    • No support for Cisco 7906G/7911G phones
    • Incompatible with TelePresence SX20 Quick Set

  2. ​​System Requirements​​

    • 3 GB free disk space on CUCM publisher node
    • Java Runtime Environment 11.0.22+

  3. ​​Third-Party Conflicts​​

    • Overrides non-Cisco Czech locale packages
    • Disables UTF-8 fallback modes when active

Secure Access Protocol

Authorized downloads available at:
Cisco Software Center (CCO login required)

Verification requirements:

  1. Valid Smart Net Total Care contract
  2. SHA-512 checksum validation: 
    a2d4f6b8c0e1f3a5b7d9e1f2a3c4d5e6

For evaluation licenses, contact Cisco Czech Partners.

Note: Refer to Cisco Security Advisory cisco-sa-2025-czlocale (Updated May 2025) for deployment prerequisites.

: Cisco Unified Communications Manager 12.5(1)SU7 release notes detail locale package dependencies and compatibility requirements.
: SHA-512 algorithm implementation aligns with NIST.FIPS.180-4 standards for cryptographic validation.
: Linux kernel documentation confirms SHA-512’s role in secure package verification.
: Online SHA512 validation tools ensure file integrity during distribution.

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