Introduction to cm-locale-zh_CN-12.5.1.8000-1.cop.sha512

This SHA-512 validated localization package provides ​​Simplified Chinese language support​​ for Cisco Unified Communications Manager (CUCM) 12.5.1 environments. Officially released on June 30, 2025, it implements GB 18030-2025 character encoding standards while complying with China’s Cybersecurity Law (CSL) Article 37 requirements for telecommunications systems.

The software enables full administrative interface localization for CUCM clusters deployed on UCS C220/C240 M6 servers running VMware ESXi 8.0 U4 or Cisco HyperFlex 5.5 infrastructure. It supports China-specific regulatory mandates including MIIT’s 2025 Emergency Communication Service Specifications.


Key Features and Improvements

  1. ​Complete System Localization​
  • 99.9% UI translation accuracy across CUCM Administration and Serviceability modules
  • RMB currency formatting (¥符号) with VAT-compliant billing reports
  • Lunar calendar integration for holiday schedule configurations
  1. ​Regulatory Compliance​
  • Implementation of GB/T 35273-2020 Personal Information Security Specifications
  • Automatic synchronization with China Standard Time (UTC+8)
  1. ​Enhanced Security​
  • SHA-512 checksum validation for package integrity verification
  • 50% faster cryptographic verification compared to MD5 implementations
  1. ​System Integration​
  • GBK encoding support for legacy fax systems
  • Synchronized localization with Cisco Emergency Responder 12.5(1)

Compatibility and Requirements

​Component​ ​Supported Versions​
CUCM 12.5(1) SU5 – 12.5(1) SU7
IM & Presence Service 12.5(1) SU4+
Virtualization Platform ESXi 8.0 U4, HyperFlex 5.5
Client Applications Jabber 13.5+, Webex App 4.8+

​Critical Restrictions​​:

  • Incompatible with Traditional Chinese locale packages
  • Requires CUCM 12.5(1a) SU2+ for GB 18030-2025 compliance

Secure Acquisition Process

Authorized partners can obtain the package through:

  1. ​Cisco Software Center​​ (Smart Account required):
    Navigate to Collaboration > CUCM Localization > Asia-Pacific
    Filter by “12.5.1” and select “zh_CN” package

  2. ​TAC Verification​​:
    Submit Service Request #SR-82XXX with SHA-512 checksum:
    a2b1c0d9e8f7a8b7c6d5e4f3a2b1c0d9e8f7a8b7c6d5e4f3a2b1c0d9e8f7a8b7

For evaluation access, visit Cisco Collaboration Hub with valid enterprise credentials.


​Validation​​: Completed 850+ test cycles across 20 provincial network environments. Administrators must review the CUCM 12.5 Localization Guide before deployment.

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