You have uploaded the files to the TFTP server, created the file, and tested this on one of your phones. Then you go about the process of working on a plan to push this new image out to all of your phones. A third party option is provided at the end of this blog.Cisco Phone Designer This is likely one of the first places you land when doing research on this topic.The IP phone communicates with the switch, using the Cisco Discovery Protocol (CDP), to request the voice VLAN if present.The switch CDP response provides the phone with the appropriate 802.1Q VLAN ID, known as the voice VLAN ID (VVID).Cisco may require you to have a smartnet contract before you download the firmware, but if you do not have one, there are firmware files available on the internet. Download the firmware for the specific phone you are using. If you are downloading an older version of the SIP/SCCP firmware and it only comes in a file extension.(if cisco doesnt allow you to download the firmware, check here: ftp://ua/pub/cisco/ip-7900ser/ or for phone firmware). Just rename the extension to gz and extract it to a directory using winzip or winrar.
The Liberty University IT Help Desk is currently aware of an issue where physical Cisco phones will encounter the following error when the Corporate Directory is being accessed and also may be unable to access call history: If these steps do not solve your issue or if you have any questions or concerns regarding them, please call the Help Desk at (434) 592-7800 or (866) 447-2869. To deploy Cisco Unified Communications Manager Express, network services need to be established and properly configured on all routers and switches for Cisco IP phones to function.This chapter describes the typical boot process for Cisco IP phones and indicates the best practices related to configuring the network to support Voice over IP (Vo IP). Just like a switch, the phone can support 802.1Q frames between itself and another switch, and more than one VLAN can be supported between the Cisco Unified IP phone and an access switch.Thank goodness for DHCP option 150 which does this for us when the phone grabs an IP address after loading the bootloader.Below are instructions to upgrade/convert any Cisco 7940, 7941, 7960, 7961, 7970, 7971, 7942, 7962, 7945, 7965 IP phone to any firmware you want from the Cisco web site (SIP/SCCP), and to recover any cisco phone which may have screwed up somehow while upgrading firmware (like if you get the protocol application invalid message). Goto and create a login if you do not already have one.