Cisco SPA525G Administration Guide - Page 141
Upgrading Firmware on a Phone, Provisioning, Firmware Upgrade, Upgrade Enable: yes - firmware update
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Provisioning Basics Upgrading, Resyncing, and Rebooting Phones 7 256-bit symmetric key encryption of profiles is supported. In addition, an unprovisioned Cisco IP phone can receive an encrypted profile specifically targeted for that device without requiring an explicit key. a secure first-time provisioning mechanism using SSL functionality. 1- User intervention is not required to initiate or complete a profile update or firmware upgrade. The Cisco IP phone upgrade logic is capable of automating multi-stage upgrades, if intermediate upgrades are required to reach a future upgrade state from an older release. A profile resync is only attempted when the Cisco IP phone is idle, because this may trigger a software reboot. General purpose parameters are provided to help service providers manage the provisioning process. Each Cisco IP phone can be configured to periodically contact a normal provisioning server (NPS). Communication with the NPS does not require the use of a secure protocol because the updated profile is encrypted by a shared secret key. The NPS can be a standard TFTP, HTTP or HTTPS server. The administrator can upgrade, reboot, or resync Cisco IP phones using the web interface. Upgrading Firmware on a Phone Use the upgrade URL to upgrade firmware on the Cisco IP phone. You can upgrade from either a TFTP or HTTP server. The Upgrade Enable parameter on the Provisioning web page must be set to Yes: Cisco IP phone web UI: Provisioning > Firmware Upgrade > Upgrade Enable: yes Use the following syntax to upgrade firmware on a phone: http://phone-ip-address/admin/upgrade?protocol://servername[:port]]/firmware-path • Protocol defaults to TFTP. • Server name is the host requesting the URL. • Port is the port of the protocol being used (for example, 69 for TFTP or 80 for HTTP). • Firmware-path defaults to /spa.bin (for example, http://192.168.2.217/ admin/upgrade?tftp://192.168.2.251/spa.bin) for SPA phones and / wip310.img for the WIP310. The firmware-pathname is typically the file name of the binary located in a directory on the TFTP or HTTP server. Cisco SPA and Wireless IP Phone Administration Guide 139