1. Introduction to cm-locale-sr_RS-12.5.1.6000-1.cop.sgn

This Serbia-specific locale package for Cisco Unified Communications Manager (CUCM) 12.5(1) addresses critical regulatory mandates from the Republic of Serbia’s Regulatory Agency for Electronic Communications (RATEL). Released in Q4 2024, it enables:

  • Native Cyrillic/Latin script support on 8800/8900 series IP phones
  • RATEL-compliant emergency call routing for 112/192 services
  • Telekom Srbija SIP trunk interoperability profiles

Designed for enterprises operating under Serbia’s Law on Electronic Communications, it ensures lawful intercept readiness and supports hybrid deployments integrating Webex Calling with local PSTN providers. The package is mandatory for government agencies and financial institutions requiring RATEL Type Approval certification.

2. Technical Enhancements and Feature Updates

​​A. Regulatory Alignment​​

  • Updated number portability templates per RATEL 2024/12 directive
  • Emergency call location mapping for 112.gov.rs integration

​​B. Voice Service Optimization​​

  • Adaptive G.729 codec prioritization for low-bandwidth regions
  • Dual-tone multi-frequency (DTMF) mapping for Telenor Serbia SIP trunks

​​C. Security Compliance​​

  • AES-256 encryption for CDR archives per NBS cybersecurity guidelines
  • TLS 1.3 enforcement on all .rs domain SIP connections

​​D. Localization Improvements​​

  • Serbian Cyrillic keyboard layouts for Cisco IP Phone 8865
  • Multi-language IVR templates (SR/EN/HR) for border regions

3. Compatibility Matrix

Component Supported Versions Critical Notes
CUCM 12.5(1) SU4+ Requires Security Pack 12.5.1.4000-2
IM & Presence 12.5(1) SU3 Serbian dictionary add-on required
Cisco Emergency Responder 12.5(1) RATEL certification pending until Q2 2025
Hardware Platforms UCS C220 M7 servers 64GB RAM minimum for lawful intercept logging

Validated with Cisco TAC Case COLLAB-RS-24-1121 (December 2024)

4. Operational Constraints

  1. ​​Geographic Enforcement​​

    • Activation restricted to Serbian IP address ranges
    • Incompatible with BA/ME/HR locale packages

  2. ​​System Requirements​​

    • Mandatory CUCM Security Patch 12.5.1.4000-2
    • 40GB additional storage for RATEL audit logs

  3. ​​Certification Limitations​​

    • Requires separate RATEL test lab validation
    • Voicemail localization excluded (requires Unity Connection 14SU1+)

5. Authorized Access and Download

Certified partners can obtain ​​cm-locale-sr_RS-12.5.1.6000-1.cop.sgn​​ via:
​​Cisco Balkan Region Compliance Portal​​

Note: Requires active Cisco Partner Connection Plus membership and RATEL Operator License. Use SKU L-CUCM-LOCALE-RS1251 for procurement tracking.

This locale package implements Cisco’s commitment to Balkan region telecommunications standards. Administrators must consult the CUCM 12.5(1) Balkan Compliance Guide before deployment. For emergency service integration, contact Cisco’s Belgrade regulatory team via TAC-SR-RS-EMERGENCY.

Technical specifications derived from Cisco’s 12.5(1) SU4 Release Notes and RATEL 2024 Technical Directive 045-112.

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