Aastra Telecom 9143i Series User Manual

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41-001160-03, Rev 00, Releaes 2.4  

IP Phone Administrator Guide

An administrator can setup and configure the IP phone using the Aastra Web UI. 
The Aastra Web UI supports Internet Explorer and Gecko engine-based browsers 
like Firefox, Mozilla or Netscape.

The Aastra Web UI supports both Hypertext Transfer Protocol (HTTP) and 
Hypertext Transfer Protocol over Secure Socket Layer (HTTPS) client and server 
protocols. 

HTTP is the set of rules for transferring files (text, graphic images, sound, 
video, and other multimedia files) over the Internet. When you open your 
Web browser, you are indirectly making use of HTTP. HTTP is an 
application protocol that runs on top of the TCP/IP suite of protocols (the 
foundation protocols for the Internet).

HTTPS is a Web protocol that encrypts and decrypts user page requests as well as 
the pages that are returned by the Web server. HTTPS uses Secure Socket Layer 
(SSL) or Transport Layer Security (TLS) as a sublayer under its regular HTTP 
application layering. 

SSL is a commonly-used protocol for managing the 

security of a message transmission on the Internet. 

It uses a 40-bit key size 

for the RC4 stream encryption algorithm, which is considered an adequate degree 
of encryption for commercial exchange. TLS is a protocol that ensures privacy 
between communicating applications and their users on the Internet. When a 
server and client communicate, TLS ensures that no third party may eavesdrop or 
tamper with any message. TLS is the successor to SSL.

An Administrator can enable or disable the Aastra Web UI for a 

single phone or all phones in a network. For more information about 
enabling/disabling the Aastra Web UI, see 

 on 

.

HTTPS uses port 443 instead of HTTP port 80 in its interactions 

with the TCP/IP lower layer. Both the HTTP and HTTPS port numbers 
are configurable using the configuration files, the IP Phone UI, the Aastra 
Web UI and DHCP Option 66. For more information about configuring 
these ports, see Chapter 4, the section, 

 on 

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