Superb call quality, a large easy-to-read display screen and user-friendly button layouts/designs make the Cisco phone models of old and late some of the best hardware available for IP-based phone systems.
However, for all their outstanding advantages, configuring these phones to work with a non-Cisco managed Vo IP network can be a bit of a chore.
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Upgrading your Cisco IP phone firmware is a very simple process.
Special consideration must be taken into account when upgrading to the latest firmware.
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.
From that information, the steps to configure the following phone models has been confirmed: 7940, 7960, 7945, 7965, 7970, and Communicator (softphone).
A Cisco 7975 was not available for testing, however, the 79X5 models have standardized configuration templates and the information for these units should apply (We are still trying to acquire one to confirm this).A user locale is comprised of localized graphical user interface, telephone user interface and annunciators (audio prompts) that can be heard via a telephone.User locales are produced individually and are specific to a language and country combination. Network Locale and Combined Network Locale are synonymous.According to Cisco, when initiating a factory reset procedure certain information from the IP phone is erased while other information is reset to the factory default value, as shown in the list below: Information Erased: It is highly advisable to follow the firmware upgrade procedure in a non-working environment to ensure other phones are not affected (in case of an accidental reboot), and to avoid the freshly factory reset ip phones obtaining the working environment’s settings.Cisco IP phone SCCP firmware files version 9.2., 7965 & 7975 IP phones (latest version at the time of writing this article) are available at our Cisco IP Phone & ATA Firmware Download section. When performing the factory reset procedure we are about to describe it is important to keep in mind that the IP phone will lose all configuration files and phone application.This article explains how to reset your Cisco 7945, 79 IP phone to factory defaults, and how to upgrade the firmware to the latest available version.