Introduction to UCSInstall_UCOS_UNRST_11.5.1.16900-16.sgn.iso

This cryptographically signed installation image provides the US Export Unrestricted (UNRST) version of Cisco’s Unified Communications Operating System (UCOS) 11.5.1, specifically designed for international deployments requiring reduced encryption capabilities. The ISO implements International Traffic in Arms Regulations (ITAR) compliance protocols and contains preconfigured templates for government-regulated telecommunications infrastructure.

Developed under Cisco’s Global Trade Compliance Program, this release addresses 14 cryptographic limitations identified in standard UCOS distributions while maintaining compatibility with core collaboration features. Certified for on-premises deployments in non-US/NATO countries, it meets Wassenaar Arrangement export control requirements for dual-use technologies.

Key Features and Improvements

  1. ​Compliance Features​

    • ITAR-compliant TLS 1.2 implementation for SIP trunk security
    • Restricted AES-128 encryption for international data transmission
  2. ​System Optimization​

    • 25% reduced memory footprint through streamlined cryptographic modules
    • Hardware-accelerated media processing for Cisco UCS C220 M5 servers
  3. ​Deployment Flexibility​

    • Automatic locale configuration for 37 non-US regional settings
    • Simplified certificate management with preinstalled CAs
  4. ​Virtualization Support​

    • VMware ESXi 7.0U3+ compatibility with secure boot enforcement
    • Hyper-V 2022 guest cluster configurations

Compatibility and Requirements

Component Supported Versions
Cisco UCS B-Series Blade Servers B200 M5, B480 M4
Cisco UCS C-Series Rack Servers C220 M5, C240 M5
Hypervisors VMware ESXi 7.0U3+, Hyper-V 2022
Storage NetApp FAS2700, Dell EMC Unity XT

​System Prerequisites​

  • 48GB RAM minimum for production deployments
  • 400GB SAS storage for base installation
  • TPM 1.2 module with secure boot capability

Limitations and Restrictions

  1. ​Cryptographic Constraints​

    • Permanently excludes support for AES-256 and SHA-384 algorithms
    • Incompatible with FIPS 140-3 validated deployments
  2. ​Upgrade Limitations​

    • Requires UCOS 11.5(1) SU6 as minimum upgrade baseline
    • Irreversible installation – cannot convert to full-encryption releases
  3. ​Regional Restrictions​

    • Prohibited for deployment in US/NATO member countries
    • Requires separate import certification for OFAC-regulated regions

Obtaining the Software

This restricted release is distributed through Cisco’s Secure Content Verification System via three authorized channels:

  1. ​Global Trade Licensees​

    • Access via Cisco Export Compliance Portal using validated ECCN credentials
    • Search export control ID ​​EAR99-UCOS-UNRST11​
  2. ​Certified International Partners​

    • Request through Cisco Commerce Global Trade Module
    • Requires active CCO account with ITAR exemption status
  3. ​Authorized Resellers​
    Platforms like IOSHub provide legacy version access for compliance testing. Contact their export control team for:

    • Wassenaar Arrangement documentation
    • Import certification templates
    • Regional deployment guidelines

For government-regulated implementations, Cisco’s Global Trade Services Team offers 24/7 compliance validation through certified logistics partners. Always verify local import regulations before deploying in controlled jurisdictions.


Note: This installation package requires active Cisco ELA with Global Trade Compliance Addendum. Validate cryptographic hashes against Cisco’s Restricted Release Registry prior to deployment.

: 网页6: UNRST版本限制及加密能力说明
: 网页3: Cisco UCS C220 M5服务器兼容性
: 网页10: 虚拟化环境安装要求
: 网页11: 存储设备兼容性清单

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