You may use any other DHCP server, just make it provides option 150 to your phone. Option 150 should point to the IP address of TFTP server. The IP address of my laptop running TFTP server is 10.0.0.10. I’m using Cisco switch in my lab and configured very primitive DHCP server like this: Otherwise, the phone will not know where to download the firmware files from once it boots. Option 150īefore we reset the IP phone you we need to configure our DHCP server to provide the IP address of TFTP server to the IP phone. The image below shows the content of the TFTP root directory. Go to and download the TFTPD32 or TFTPD64 server, which is a tiny TFTP server, required to serve the firmware files to the IP phone.Įxtract all files from the previously downloaded package to the TFTP directory. Below is a screenshot showing the 8.5.2 version firmware package for 7911 IP phone. Make sure you download the right SIP firmware for your phone model in a ZIP package. Go to Cisco Download Page and get the required SIP firmware files. Download the SIP firmware.īefore we start, let’s download the required SIP firmware files.
The instruction below applies to all Cisco 7900 series IP phones. This will make possible using the phone with third party SIP servers. In this post we will learn how to upload SIP firmware to Cisco 7911 IP Phone.
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