Cmterm-7975-sip.9-4-2sr4.zip

Installing this firmware typically follows one of two paths depending on your infrastructure: 1. Via Cisco Unified Communications Manager (CUCM) Cisco IP Phone 9971 Firmware Load 9.4(2)SR2 SIP

: Missing or incorrect CTL/ITL files on the phone. Fix : Erase security settings under Device Configuration > Security > Trust List > Reset . Cmterm-7975-sip.9-4-2sr4.zip