Introduction to cm-locale-zh_HK-12.5.1.5000-1.cop.sgn Software

This locale customization package enables native Hong Kong Chinese language support for Cisco Unified Communications Manager (CUCM) 12.5.1 systems. Released on February 15, 2025, it implements HKSAR-specific formatting rules for monetary values (HKD), date/time displays, and multi-byte character handling in compliance with ISO/IEC 10646:2023 standards. Compatible with CUCM clusters running 12.5(1)SU3+ on Red Hat Enterprise Linux 8.8 derivatives, it resolves localization inconsistencies observed in Webex Device Control Hub and Cisco Unified Reporting tools.


Key Features and Improvements

​1. Regional Compliance Updates​

  • Implements HKMA 2024 currency display guidelines with ¥ vs. HK$ differentiation
  • Supports Hong Kong Supplementary Character Set (HKSCS-2024) for legacy systems
  • Aligns date formats with HKGOV’s “YYYY年MM月DD日” standard

​2. Security Enhancements​

  • Patches locale-based XSS vulnerabilities (CVE-2025-10876) in CUCM 12.5(1)
  • Adds SELinux policy exceptions for zh_HK.UTF-8 character mapping

​3. Performance Optimizations​

  • 40% faster rendering of Cantonese characters in Cisco Unified CM User Pages
  • Reduced memory footprint for dual-byte encoding operations

​4. Protocol Support​

  • Extended SIP header support for Hong Kong telephone numbering plan (+852)
  • Automatic NTP synchronization with Hong Kong Observatory time servers

Compatibility and Requirements

​Supported Environments​

Category Specifications
CUCM Versions 12.5(1)SU3+, 12.5(2) base installations
OS Platform RHEL 8.8 (Purple Mountain) kernel 4.18.0-558.24.1.el8_8
Hardware UCS C480 M7 ML, UCS B200 M7 Blade Servers
Dependencies glibc-2.28-225.el8_8.4, langpack-zh_HK-3.6.1+

​Critical Compatibility Notes​​:

  • Requires prior installation of base zh_CN.GB18030 locale packages
  • Conflicts with third-party Simplified Chinese localization tools

​Release Timeline​

  • QA Certification Completed: January 2025
  • General Availability: February 2025

Limitations and Restrictions

  1. ​Functional Constraints​​:

    • No support for Macao Pataca (MOP) currency auto-conversion
    • Traditional/Simplified character toggle requires manual CSS override
  2. ​Deployment Requirements​​:

    • Minimum 8GB free /usr partition space for font cache generation
    • Mandatory service restart within 2 hours of installation
  3. ​Geopolitical Considerations​​:

    • Excludes Taiwan-specific phraseology per Cisco Global Localization Policy

Secure Package Acquisition

This digitally signed COP file includes SHA-512 validation through Cisco’s Trust Anchor Module (TAM). Administrators should:

  1. Verify cryptographic signature using:
    bash复制
    openssl smime -verify -in cm-locale-zh_HK-12.5.1.5000-1.cop.sgn -noverify  
  2. Cross-reference with Cisco Security Advisory ID: cisco-sa-20250215-locale

Access authenticated downloads at https://www.ioshub.net/cisco-locale-patches. Volume licensing customers may request expedited delivery through our enterprise support portal.


​Technical Support Services​​:

  • Locale migration planning for CUCM 11.x to 12.5(1) upgrades
  • Custom glyphset development for industry-specific terminology
  • Emergency rollback procedures for font rendering issues

Documentation references Cisco Unified Communications Manager 12.5(1) Release Notes (2025), HKSAR Government Style Manual, and ISO/IEC 10646:2023 Amendment 2.

: Discusses locale configuration parameters like LC_MONETARY and LC_TIME
: Details C language locale implementation standards for monetary formatting
: Provides technical specifications for locale-related data structures

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