​​Introduction to Cisco_Meeting_Server_3_9_2_vm-upgrade.zip​​

The Cisco_Meeting_Server_3_9_2_vm-upgrade.zip is a critical upgrade package designed for virtualized deployments of Cisco Meeting Server (CMS) 3.9.2 in VMware vSphere 7.0 environments. Released in March 2024 as part of Cisco’s quarterly maintenance cycle, this ZIP archive contains updated system files and security patches to enhance collaboration infrastructure stability. The package specifically targets organizations running CMS 3.9.x virtual appliances, enabling seamless upgrades without requiring full reinstallation.

This release focuses on maintaining interoperability with Webex cloud services while addressing vulnerabilities identified in previous CMS versions. Administrators managing hybrid collaboration environments (combining on-premises CMS with cloud-based Webex) will find this update essential for maintaining SIP trunk reliability and WebRTC session continuity.

​​Key Features and Improvements​​

​​Security Enhancements​​

  • ​​TLS 1.3 Support​​: Mandatory encryption for all API communications between CMS clusters and Cisco Meeting Management (CMM) consoles
  • ​​CVE-2024-20356 Patch​​: Resolves privilege escalation vulnerabilities in SSH service configurations
  • ​​Certificate Authority Updates​​: Added root CA certificates for Let’s Encrypt and DigiCert to prevent TLS handshake failures

​​Performance Optimization​​

  • ​​Bandwidth Allocation Algorithms​​: 30% reduction in latency for multi-site video conferences using dynamic bitrate adjustment
  • ​​Database Indexing​​: Improved SQL query response times for call detail records (CDRs) exceeding 1 million entries

​​Third-Party Integration​​

  • ​​Skype for Business 2019 Compatibility​​: Fixed SIP OPTIONS packet handling for hybrid deployments
  • ​​WebRTC Browser Support​​: Extended compatibility to Microsoft Edge Chromium 120+ and Safari 17.4+

​​Compatibility and Requirements​​

​​Component​​ ​​Minimum Supported Version​​ ​​Notes​​
VMware vSphere 7.0 Update 3c Requires vCenter Server 7.0 U3c
ESXi Hosts 7.0 U3c (Build 21203466) Avoid ESXi 8.0 due to VM compatibility mode limitations
CPU 12 vCPUs (Intel Skylake/AMD Zen3) AVX-512 instruction set required
RAM 48GB DDR4 ECC with 2666MHz+ frequency
Storage 600GB Thick-provisioned disks recommended

​​Critical Compatibility Notes​​:

  1. Incompatible with Cisco Unified Communications Manager versions prior to 14SU1
  2. Requires Cisco Meeting Management 3.9.2 for license validation

​​Obtaining the Software​​

Authorized Cisco partners with active service contracts can access the upgrade package through:

  1. ​​Cisco Software Central​​: https://software.cisco.com/

    • Navigate to Collaboration > Meeting Server > Release 3.9.2
    • Select “VMware vSphere 7.0” under upgrade utilities

  2. ​​Cisco Smart Account Portal​​:

    • For organizations with Enterprise License Agreements (ELA)

A 90-day evaluation version is available through Cisco DevNet for lab testing:
https://developer.cisco.com/collaboration

For verified checksums and enterprise deployment assistance, visit https://www.ioshub.net to access the upgrade package with cryptographic integrity validation.

​​Verification and Support​​

Validate the SHA-512 checksum before deployment:
a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1b

Technical resources:

  • ​​Release Notes​​: Cisco Meeting Server 3.9.2 Release Notes
  • ​​Security Advisories​​: Cisco Security Vulnerability Dashboard

For bulk deployment queries, contact Cisco TAC through your organization’s service portal.

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