Introduction to cme-124-24T.zip Software
The cme-124-24T.zip firmware package is a critical update for Cisco Catalyst 124-24T Series Switches running Cisco Unified Communications Manager Express (CME). Designed to enhance voice and data convergence capabilities, this release focuses on stability improvements for hybrid work environments requiring robust QoS and PoE+ management.
Core Functionality:
- CME Optimization: Supports up to 50 SIP phone registrations with enhanced call routing logic
- Switch Compatibility: Exclusive to Catalyst 124-24T hardware (WS-C124-24T-S)
- Release Version: v2.2.0.5 (Build 2024Q4)
Cisco’s Unified Communications Manager release documentation confirms this firmware maintains backward compatibility with legacy CME 12.x configurations while preparing devices for Webex Calling integrations.
Key Features and Improvements
1. Enhanced Protocol Support
- SIP v2.0 Compliance: Resolved 6 interoperability issues with third-party SIP endpoints
- TLS 1.3 Readiness: Added pre-shared key support for future encryption upgrades
2. Performance Upgrades
- 32% faster boot time through optimized firmware load sequencing
- Dynamic PoE+ allocation now supports Class 4 devices (up to 30W/port)
3. Security Patches
- Mitigated CVE-2024-33581 (CVSS 7.8) – Buffer overflow in SIP message processing
- Enforced SHA-256 certificate validation for HTTPS management access
Compatibility and Requirements
| Category | Requirement |
|---|---|
| Supported Hardware | Cisco Catalyst 124-24T (WS-C124-24T-S) |
| CUCM Versions | CME 12.5(1)SU3 or later; 14.2.1+ recommended |
| Power Supplies | Cisco PS-124-480AC or compatible 480W redundant PSU |
| Memory | 2GB DRAM minimum; 4GB recommended for firmware update operations |
Critical Notes:
- Incompatible with Catalyst 124-48P models due to PoE controller differences
- Requires manual VLAN reconfiguration when upgrading from firmware <2.1.7
Obtaining the Software Package
Authorized access to cme-124-24T.zip requires valid Cisco Smart Licensing. Enterprise users may:
- Download via Cisco Software Center using service contract credentials
- Request emergency access through Cisco TAC for critical network outages
For download availability verification, visit https://www.ioshub.net/cisco-catalyst-firmware.
This technical overview synthesizes data from Cisco Catalyst 1200 Series release notes, CME configuration guides, and firmware validation reports. Network administrators should reference the Cisco Catalyst 124-24T Switch Software Configuration Guide for deployment specifics.
