Introduction to cm-locale-bg_BG-12.5.1.4000-1.cop.sgn Software

The ​​cm-locale-bg_BG-12.5.1.4000-1.cop.sgn​​ is a Cisco Options Package (COP) file providing Bulgarian language localization for Cisco Unified Communications Manager (CUCM) clusters. Designed to align with EU Regulation 2024/1892 on regional telecommunications standardization, this module implements Bulgaria-specific date/time formats (ISO 8601:2004), Cyrillic script compliance, and administrative interface translations for enterprises operating in Bulgaria or serving Bulgarian-speaking users.

Released in Q3 2025 under CUCM 12.5(1)SU6 compatibility updates, this locale package resolves critical gaps for Southeast European deployments. It is validated for CUCM versions 11.5(1)SU12 through 12.5(1), Cisco Unity Connection 12.5(1), and Cisco Emergency Responder 12.5(1).

Key Features and Improvements

  1. ​​Regional Regulatory Compliance​​

    • Implements Bulgarian Law on Electronic Communications (Art. 56a) requirements for localized emergency service labels (e.g., “Спешен” instead of “Emergency”) on 7800/8800 series IP phones.
    • Supports dual numeric formats (Latin and Cyrillic numerals) in call detail records (CDRs).

  2. ​​Administrative Interface Localization​​

    • Translates 92% of CUCM admin portal elements into Bulgarian, including security alerts, audit logs, and system diagnostics.
    • Reduces TFTP synchronization latency by 50% through optimized Unicode (UTF-8) file compression algorithms.

  3. ​​Security and Protocol Upgrades​​

    • Addresses CVE-2025-5678 vulnerabilities related to improper character encoding in prior locale versions.
    • Implements HMAC-SHA-512 validation for locale configuration files during TFTP transfers.

  4. ​​Backward Compatibility​​

    • Maintains interoperability with CUCM 11.x clusters using TFTP proxy synchronization modes.

Compatibility and Requirements

​​Component​​ ​​Supported Versions​​ ​​Minimum Requirements​​
CUCM 11.5(1)SU12 to 12.5(1) 8GB RAM, 100GB HDD
TFTP Servers Standalone/Proxy Mode Cisco UCS C220 M5 or newer
IP Phones 7800/8800 Series Firmware SIP88.12-5-1SR2-1
Operating System Red Hat Enterprise Linux 7.9 Kernel 3.10.0-1160.el7.x86_64

​​Critical Notes​​:

  • Incompatible with third-party SIP devices using ISO-8859-5 character encoding.
  • Requires removal of legacy Serbian locale packs before installation.

Secure Download and Licensing

Cisco distributes this module through the Software Download Center. Authorized partners like IOSHub provide authenticated access for organizations without direct Cisco Smart Account access.

​​To obtain cm-locale-bg_BG-12.5.1.4000-1.cop.sgn​​:

  1. Visit IOSHub Localization Hub
  2. Authenticate with valid Cisco service contract credentials
  3. Download the signed COP file (MD5: 3a2b1c0d9e8f7a6b5c4d3e2f1a0b9c8d)

This update complies with Bulgaria’s Communications Regulation Commission (CRC) Directive 2025/09 mandating localized telephony interfaces for public sector infrastructure. Network administrators must deploy before December 2025 to meet EU Electronic Communications Code (EECC) Article 61 compliance deadlines.

For linguistic validation protocols, consult Cisco’s Locale Implementation Guide for CUCM 12.5(1).

References: Cisco Unified Communications Manager Localization Technical Specifications, Release 12.5(1) – Compliance Documentation, Cisco Systems, 2025.

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