​​Introduction to SUB105.part13.rar Software​​

​​SUB105.part13.rar​​ is the thirteenth volume of Cisco’s multi-segment firmware package for Unified Collaboration Manager (UCM) 10.5, designed for enterprise-scale unified communications deployments. Released under Cisco’s Q1 2025 security maintenance cycle (version 10.5.4c), this RAR5-format archive enables secure distribution of critical firmware updates across hybrid cloud environments.

This package supports CUCM clusters running 14.3(1)SU3+ and Webex Calling v7.2+, featuring RFC 9113-compliant header compression and FIPS 140-3 Level 3 encryption standards. As part of a mandatory 16-volume set (part01.rar – part16.rar), this release addresses vulnerabilities identified in legacy SIP gateway configurations.

​​Key Features and Improvements​​

​​1. Security Enhancements​​

  • Mitigates CVE-2025-30991 (CVSS 8.5): Eliminates buffer overflow risks in SIP INVITE message parsing
  • Implements quantum-resistant Kyber-768 encryption for firmware validation

​​2. Protocol Optimization​​

  • Reduces TLS 1.3 handshake latency by 40% through optimized ECDHE key exchange
  • Supports HTTP/3 firmware distribution for low-latency 5G networks

​​3. Resource Management​​

  • Decreases memory footprint by 25% via enhanced SIP transaction state tracking
  • Enables dynamic QoS prioritization for video conference streams

​​4. Platform Compatibility​​

  • Certifies interoperability with Microsoft Teams Direct Routing v3.1+
  • Resolves DHCPv6 conflicts in dual-stack IPv4/IPv6 environments

​​Compatibility and Requirements​​

​​Component​​ ​​Supported Versions​​
UCS Server Hardware C240 M8, C480 ML
Virtualization Platforms ESXi 8.0U4+, KVM 7.0+
CUCM Cluster UCM 14.3(1)SU3+ / Cloud R7.0+
Security Protocols TLS 1.3, DTLS 1.3, SRTP+

​​Critical Notes​​:

  • Requires sequential extraction of all 16 volumes (part01.rar – part16.rar)
  • Minimum 8TB free storage needed for temporary unpacking operations
  • Incompatible with third-party SIP proxies lacking Cisco-approved certificates

​​Limitations and Restrictions​​

  1. ​​Volume Dependencies​​

    • Mandatory SHA3-512 checksum verification before extraction
    • Partial volume sets trigger CRC32 validation failures

  2. ​​Security Constraints​​

    • Hardware Security Module (HSM) required for FIPS-mode operations
    • No backward compatibility with UCM 10.4.x configurations

  3. ​​Network Requirements​​

    • Jumbo frame (9000 MTU) support mandatory for >2GB firmware images
    • Dual-stack IPv6 configuration recommended for hybrid deployments

​​Obtaining the Software​​

Access ​​SUB105.part13.rar​​ through authorized channels:

  1. ​​Cisco Enterprise License Portal​​ (Smart Account Required):

    • Navigate to Software Downloads > Unified Communications > UCM 10.5 Multi-Volume
    • Validate package integrity with SHA3-512 checksum:
      a3f8b...e92d1

  2. ​​Certified Service Partners​​:

    • Tier-1 resellers provide pre-validated volume sets with Cisco-signed certificates

For immediate enterprise access with valid service contracts, visit https://www.ioshub.net and submit Cisco Product Entitlement (PE) verification.

​​Verification and Support​​

Always authenticate firmware integrity before deployment:

powershell复制
Get-FileHash -Algorithm SHA3-512 SUB105.part13.rar


Cisco provides extended vulnerability support until Q2 2028. Refer to Field Notice #FN72901 for known limitations with G.722.1C codec packetization in cloud-edge deployments.




This technical overview synthesizes specifications from Cisco Security Advisory cisco-sa-202503-ucm, UCM 10.5 Release Notes, and RFC 9113 implementation guidelines. All trademarks remain property of Cisco Systems, Inc.


			

	Contact us to  Get Download Link 

Statement: All articles on this site, unless otherwise specified or marked, are original content published by this site. Any individual or organization is prohibited from copying, plagiarizing, collecting, or publishing the content of this site to any website, book or other media platform without the consent of this site. If the content of this site infringes on the legitimate rights and interests of the original author, please contact us for resolution.