Note: The loadInformation must match the specific version files within the 8.5.4 package. 4. Upgrading/Converting the Phone (Steps)
: Specifies compatibility. This single package contains the binary images for both the Cisco 7941G and 7961G IP phone models.
This is a critical rule: You cannot always jump directly to version 8.5.4. According to Cisco's own release notes, if your phone is running a firmware version older than 8.3(3) , you must first upgrade it to version 8.5(2) before you can upgrade to 8.5(4) or later.
Navigate to > Phone and select a specific 7941 or 7961 phone. Locate the Phone Load Name field.
– Only TLS 1.0 (deprecated). Do not use on public internet without a VPN or SBC. cmterm 7941 7961 sip 8 5 4 zipl
A tool like Tftpd64 (for Windows) or a built-in Linux TFTP server to host the files.
In the rapidly evolving landscape of Voice over IP (VoIP), hardware longevity often clashes with software modernization. Cisco’s venerable 7941G and 7961G IP phones, part of the 7900 series, have remained operational in countless enterprise environments for nearly two decades. While End-of-Life (EOL) announcements have pushed many organizations toward migration, a surprising number of legacy deployments continue to rely on these rugged endpoints—especially when converted from Skinny Client Control Protocol (SCCP) to Session Initiation Protocol (SIP).
If a 7941 or 7961 phone is running a very old factory firmware (such as v7.x), attempting to flash it directly to v9.x or higher will often fail, brick the device, or result in a continuous boot loop.
The phone will look for the XMLDefault.cnf.xml , see the P00308050400 tag, and begin downloading the 8.5.4 files. while the phone says "Upgrading." Scenario B: Manual TFTP Upgrade Note: The loadInformation must match the specific version
Now, copy the contents of the extracted folder (including the XML configuration files) to the root directory of your TFTP server. The typical location for this on a Windows system is C:\Program Files\TFTP-Server\ , but it can vary based on your TFTP server software.
Create or modify the XML configuration file specific to the phone's MAC address (e.g., SEP001122334455.cnf.xml ).
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Upgrading Cisco 7941 and 7961 IP Phones to SIP Firmware 8.5.4 This single package contains the binary images for
The specific file cmterm-7941-7961-sip.8-5-4.zip is an designed for manual installation when a Cisco Unified CallManager (CUCM) installer is not being used. 🛠️ Installation Requirements
: A server to host the files (e.g., Tftpd64 on Windows, or standard Linux tftp-hpa).
Repeat this step for every node running the TFTP service in your cluster. 5. Applying the Firmware to the IP Phones
The Cisco CMTERM 7941 7961 SIP 8 5 4 is a SIP (Session Initiation Protocol) enabled IP phone that supports both SIP and SCCP (Skinny Client Control Protocol) protocols. The device is designed to work with the Cisco Unified Communications Manager (CUCM) and provides a range of features and functionality to enhance business communication.