Provisioning Basics
Using HTTPS
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 172
6
You can set the Phone-UI-user-mode parameter in the configuration utility, but you
then need to designate individual parameters as “na” or “ro” using provisioning
files. For more information on provisioning, see the
Cisco Small Business IP
Telephony Devices Provisioning Guide
on cisco.com.
To change the Phone-UI-user-mode parameter using the web administration
interface:
STEP 1 Log in to the configuration utility.
STEP 2 Click Admin Login and advanced.
STEP 3 Click the System tab.
STEP 4 In the System Configuration section, in the Phone-UI-user-mode field, choose yes.
STEP 5 Click Submit All Changes.
Using HTTPS
The Cisco IP phone provides a reliable and secure provisioning strategy based on
HTTPS requests from the Cisco IP phone to the provisioning server, using both
server and client certificates for authenticating the client to the server and the
server to the client.
To use HTTPS with Cisco IP phones, you must generate a Certificate Signing
Request (CSR) and submit it to Cisco. The Cisco IP phone generates a certificate
for installation on the provisioning server that is accepted by Cisco IP phones
when they seek to establish an HTTPS connection with the provisioning server.
The Cisco IP phone implements up to 256-bit symmetric encryption, using the
American Encryption Standard (AES), in addition to 128-bit RC4. The Cisco IP
phone supports the Rivest, Shamir, and Adelman (RSA) algorithm for public/
private key cryptography.
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