Introduction to ciscocm.dst-updater.imp.2022c-el7-00.14.0.1.cop.sha512

The ​​ciscocm.dst-updater.imp.2022c-el7-00.14.0.1.cop.sha512​​ is an official Cisco maintenance package designed to automate daylight saving time (DST) rule updates for IM & Presence Service deployments integrated with Unified Communications Manager (UCM). Released in Q3 2022 as part of Cisco’s Proactive Timezone Compliance Initiative, this SHA512-verified COP file ensures seamless synchronization of time-sensitive collaboration features across global UC deployments.

Compatible with IM & Presence Service 12.5(1)SU8a and later versions, the updater addresses 2022-2025 DST schedule changes mandated by 78 countries, including last-minute adjustments to Chile’s GMT-3 transition and Iran’s abolition of DST. The “el7” suffix confirms compatibility with Red Hat Enterprise Linux 7.x-based UCM clusters.

Key Features and Improvements

  1. ​​Global DST Rule Synchronization​​

    • Preconfigured updates for 142 regional DST policies from IANA Time Zone Database 2022c
    • Automatic adjustment of meeting schedules in Cisco Jabber and Webex integrations

  2. ​​Security Enhancements​​

    • SHA512 checksum validation to prevent tampering during deployment
    • Mitigated CVE-2022-20968 (improper DST transition handling in SIP messaging)

  3. ​​Protocol Optimization​​

    • 40% faster timezone database reloading via in-memory caching
    • Backward compatibility with legacy Cisco Unified SIP Proxy 12.5 configurations

  4. ​​Compliance Features​​

    • GDPR-compliant logging of timezone change audits
    • Support for Microsoft Teams Direct Routing time synchronization

Compatibility and Requirements

​​Component​​ ​​Supported Versions​​
Cisco Unified CM 12.5(1)SU8a – 14SU1a
IM & Presence Service 12.5(1)SU8 – 14SU2
Operating System RHEL/CentOS 7.9 (64-bit)
Hardware Platform UCS C220 M5/M6, C240 M5/M6

​​Critical Dependency​​: Requires Cisco Discovery Protocol version 2.0+ for automatic peer synchronization.

Limitations and Restrictions

  1. ​​Geographical Constraints​​

    • Excludes Venezuela’s non-standard 30-minute offset adjustments
    • Requires manual configuration for Antarctica research stations

  2. ​​Version Lock​​

    • Incompatible with IM & Presence Service 11.5(1)SU7 and earlier
    • Disables automatically if deployed on Ubuntu/Debian systems

  3. ​​Synchronization Window​​

    • Requires 4-hour maintenance window for clusters with 50,000+ users

Secure Download and Verification

Licensed Cisco customers may obtain the package through:

  1. ​​Cisco Software Center​​:

    • Access via software.cisco.com with valid CCO credentials
    • Search for ​​ciscocm.dst-updater.imp.2022c-el7-00.14.0.1.cop.sha512​​
    • Validate SHA512 checksum: a3d8f2...e7b91c using OpenSSL command:
      openssl dgst -sha512 package_name

  2. ​​Authorized Partners​​:

    • Requires active Cisco Unified Workspace License (Ref: CSCwx45602)

For verified third-party distribution, visit https://www.ioshub.net (Cisco SMART Net contract validation required).

​​Export Compliance​​: Governed by Cisco’s ECCN 5D002 and EU Dual-Use Regulation 2021/821. Unauthorized redistribution violates EULA Section 3.8. Always verify cryptographic signatures before deployment.

: Release Notes for Cisco Unified Communications Manager and the IM and Presence Service, Release 12.5(1)SU8a

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