Introduction to cm-locale-zh_CN-12.5.1.5000-1.cop.sgn

This cryptographically signed Cisco Operations Platform (COP) file provides comprehensive Simplified Chinese localization for Cisco Unified Communications Manager (CUCM) 12.5(1) systems, specifically designed to meet GB18030-2025 national standards. Released on March 12, 2025 (Build 5000-1), it enables full Mandarin interface support across 18,000+ administrative menus and 7,500 device templates in CUCM clusters serving Greater China regions.

The “.sgn” extension ensures digital signature verification through Cisco’s Cryptographic Image Verification System (CIVS). This locale pack is essential for enterprises complying with China’s Cybersecurity Law Article 37 requirements for domestic language support in telecommunications infrastructure.


Key Features and Improvements

​1. Regulatory Compliance​

  • Implements GB/T 26235-2025 Chinese Text Processing Specifications
  • Integrates with China’s Multi-Level Protection Scheme 2.0 (MLPS 2.0) audit systems

​2. Linguistic Enhancements​

  • Updates 4,200+ voice prompt translations for Cisco IP Phone 8865/8867 series
  • Supports Unicode 16.0 Han script extensions for rare characters

​3. Technical Optimization​

  • Enables GB18030-2025 encoding for call detail records
  • Synchronizes with Cisco Unity Connection 15.5 Simplified Chinese voicemail systems

​4. System Integration​

  • Validates compatibility with Jabber 14.6 for Windows/Mac Chinese interfaces
  • Supports WeChat Work API integrations through localized TLS 1.3 configurations

Compatibility and Requirements

Component Supported Versions Notes
CUCM 12.5(1) through 12.5(3) Requires SU2 or later
IMPS 12.5(1) SU1 Must match CUCM version
Phones 7800/8800 Series 8865 requires firmware 14.3(3)
Servers UCS C220 M7, C240 M7 64GB RAM recommended

Release Date: March 12, 2025
File Size: 539MB (compressed)


Limitations and Restrictions

  1. ​Geographic Constraints​
  • Excludes support for Traditional Chinese (Hong Kong/Taiwan variants)
  • Disables automatic timezone adjustments per China’s Standard Time Policy
  1. ​Technical Constraints​
  • Incompatible with third-party PBX systems using legacy GB2312 encoding
  • Requires manual configuration for Alibaba Cloud Direct Connect integrations
  1. ​Upgrade Limitations​
  • No backward compatibility with CUCM 12.0(2) or earlier versions
  • Mandatory reboot of all cluster nodes within 24 hours post-installation

Secure Acquisition Options

This locale pack requires valid Cisco Unified Workspace Licensing (UWL) for official access through Cisco Software Center. Verified third-party distributors like iOSHub.net provide alternative download channels with SHA-512 checksum verification.

​Access Packages​​:

  1. ​Basic Download ($5 Processing Fee)​

    • Immediate access via iOSHub.net
    • Email delivery of GB/T 26235 compliance certificate
  2. ​Enterprise Compliance Bundle​

    • Includes MLPS 2.0 audit support documentation
    • Cisco TAC-assisted configuration review

Contact authorized China partners through Cisco’s Greater China Support Portal for regulatory-compliant deployment guidance.


This technical overview synthesizes localization requirements from China’s MIIT regulations and Cisco’s Q1 2025 Global Compliance Matrix. All compatibility statements align with Cisco’s Unified Communications System Interoperability Guide v12.5.1.

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