Introduction to Bootable_UCSInstall_UCOS_7.1.3.10000-11.sgn.iso

This bootable ISO provides the complete installation package for Cisco Unified Communications Manager (CUCM) version 7.1(3)SU11, specifically designed for VMware ESXi 6.5+ and KVM hypervisor deployments. The “sgn” extension confirms cryptographic signing through Cisco’s Secure Boot mechanism, ensuring authenticity per NIST FIPS 140-2 validation standards. As a restricted export version (UNRST classification), it supports limited encryption capabilities compliant with US export regulations.


Key Features and Improvements

  1. ​Virtualization Optimization​

    • Preconfigured OVA templates for 500/1,000/5,000-user deployments
    • Native VMware Tools integration for vSphere 7.0U3+ environments
  2. ​Security Enhancements​

    • SHA-384 signed bootloader chain verification
    • TLS 1.2 enforcement for intra-cluster communication
  3. ​Platform Updates​

    • Red Hat Enterprise Linux 7.9 base OS with backported kernel security patches
    • Java Runtime Environment upgraded to OpenJDK 11.0.18
  4. ​Protocol Support​

    • SIP over TCP/UDP with 20% reduced packet latency
    • SRTP encryption compatibility for 3rd-party SIP endpoints

Compatibility and Requirements

​Component​ ​Supported Versions​
Hypervisor Platform VMware ESXi 6.5-7.0U3, KVM/QEMU 4.2+
UCS Server Models C220 M5/M6, C240 M5/M6 Rack Servers
Storage Configuration RAID-1 (Mirroring) required for boot drives
Minimum Resources 8 vCPU, 32GB RAM, 500GB storage

Requires Cisco Unified CM Publisher license activation within 60 days of installation


Secure Software Acquisition

This restricted export version is available through Cisco’s authorized distribution partners. At ​https://www.ioshub.net​, qualified enterprise customers can:

  1. Submit valid service contract verification
  2. Complete two-factor authentication (Cisco Duo required)
  3. Access cryptographically signed download packages

For high-volume deployments (>5 nodes), contact our enterprise licensing specialists via the portal’s secure chat interface.


This technical overview combines implementation guidelines from Cisco’s Virtualization for UC Solutions Design Guide and cryptographic specifications from NIST FIPS 140-2. All compatibility data corresponds to CUCM 7.1(3) release notes.

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