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Hello,I have Cisco 8841 model phones, which currently have SIP firmware installed. Now, I want to upgrade all of them to MPP/3PCC firmware.However, when I try to do this via Tftpd64, which used to work before, I am now unable to upgrade the firmware....
Hello everyone,I have configured my Cisco 3700 Series Autonomous Access Points. Now, I am looking to configure the Antenna Gain setting, and I noticed that the command line allows a range that includes -128. Is setting the Antenna Gain to -128 a corr...
Dear all, I would appreciate your guidance on setting up my network.I am using Cisco 3700 Series Access Points (APs) across a 5-story building, with APs installed on every floor. I am currently enabling both 2.4 GHz and 5 GHz bands. The 5 GHz band wi...
I am using a Cisco router as a Call Manager, and I’ve encountered a problem that I can't seem to find a solution for. Most of the phones have an issue where they disconnect shortly after a call starts, whether it’s an incoming call or a transfer to a...
Hello,For loop monitoring, please recommend a suitable tool or command to detect a loop. Specifically:How can I detect a loop on a Cisco router?How can I detect a loop on a Layer 2 switch?As I am currently facing a serious issue, there is a loop in m...
The root cause is an ITL/CTL certificate mismatch combined with a likely CUCM Hostname/DNS resolution issue. Even though your PC can pull the TFTP files via direct IP, the phone is rejecting the new configuration because it is strictly validating the...
I have personally faced this same problem.First, please provide me with the following information: Which phone model are you using?Do all the phones have this problem, or is it just a few?Did this problem occur during the initial setup/configuration,...
I use this exact phone model myself.If your goal is to reset it, first unplug the power or network cable.Then, press and hold the # button and plug the network/power cable back in. Keep holding it for 3 to 5 seconds.During this time, as soon as the h...
