Cmterm-7975-sip.9-4-2sr4 May 2026

Deploying this firmware requires careful steps. Below is a high-level procedure for a typical CUCM 10.x environment.

This firmware is a "Service Release" (SR), meaning it is not a feature-heavy update but rather a stability patch. It is intended for administrators using Cisco Unified Communications Manager (CUCM) cmterm-7975-sip.9-4-2sr4

: Addresses bugs found in earlier 9.x releases, making it the preferred choice for SIP environments. Deploying this firmware requires careful steps