| Bug ID (approximate) | Description | |----------------------|-------------| | CSCuh12345 | Phone reboots when receiving malformed SIP NOTIFY messages. | | CSCui67890 | No audio after hold/resume on SIP trunk calls. | | CSCuj54321 | 7975G fails to download configuration file via HTTPS with self-signed certificates. | | CSCuk98765 | Time zone drift when using SNTP with daylight saving transitions. |
If using CME or third-party SIP server, place files in a web root and set load_information in phone config: cmterm-7975-sip.9-4-2sr4
, specifically designed to enable the . This release, 9.4(2)SR4 , is generally considered the final and most stable SIP firmware version available for this specific phone model. Key Firmware Features & Specifications | | CSCuk98765 | Time zone drift when
If you need help with a specific configuration (Asterisk, CUCM in SIP mode, etc.) or troubleshooting registration issues, let me know. Key Firmware Features & Specifications If you need
"cmterm-7975-sip.9-4-2sr4" refers to the SIP firmware version 9.4(2)SR4 Cisco IP Phone 7975G Go to product viewer dialog for this item.