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Why Cisco 8961 IP Phone cannot authenticate CTL file?
If your Cisco IP Phone cannot authenticate the CTL file, the security token that signed the updated CTL file does not exist in the CTL file on the phone.
Why Cisco IP Phone cannot authenticate configuration files other than ITL file?
If the Cisco IP Phone cannot authenticate any of the configuration files other than ITL file, the configuration file may not be signed by the corresponding certificate in the phone Trust List.
General| Resolution | 640 x 480 pixels |
|---|---|
| Display | 5-inch TFT color display |
| Ethernet | 10/100/1000 Mbps |
| Power | IEEE 802.3af Power over Ethernet (PoE) Class 3 |
| Connectivity | Two-port Gigabit Ethernet switch |
| Buttons | 4 softkeys |
| USB Port | Yes, supports USB 2.0 |
| Headset Jack | Yes, dedicated headset port |
| Speakerphone | Full-duplex speakerphone |
| Codec Support | G.711, G.722, G.729, iLBC |
| Security | 802.1X authentication, TLS, SRTP, HTTPS |
Introduces the Cisco Unified IP Phone 8961, detailing its features and hardware.
Guidance on connecting the phone to the network and basic operational setup.
Instructions for adjusting the phone display viewing angle and understanding its hardware.
Explains the phone screen layout, line configurations, and user navigation.
Lists available phone applications such as Call History, Preferences, and WLAN Sign in.
Guide to viewing, filtering, and managing call history records on the phone.
How to configure user preferences for ringtone, wallpaper, and brightness.
Explains the function of dedicated feature buttons and available softkeys on the phone.
Covers features like All Calls, Answer, Auto Answer, and Barge for managing calls.
Instructions for setting up Call Forward All and using the Call Park feature.
Steps for creating, joining, and managing conference calls on the phone.
Accessing and managing phone settings, directories, and services via web pages.
Configuring call forwarding, message indicators, and ring settings per phone line.
How to set up speed-dial buttons and codes via User Options web pages.
Information on supported phone accessories, including headsets and USB devices.
Details on the Cisco Unified IP Color Key Expansion Module and its capabilities.
Guidelines for using Bluetooth headsets with the phone, including performance and pairing.
Guidance on power outages, external devices, and potential performance impacts.
Statements regarding FCC compliance for radio frequency and digital device regulations.
Overview of phone features supporting visually, hearing, and mobility impaired users.
