Developing Cisco IP Phone Services: A Cisco AVVID Solution

Chapter 5. Using HTTP

This chapter provides an in-depth look at the Web client and the Web server capabilities of the Cisco IP Phone. The client and the server components in the Cisco IP Phone use the Hypertext Transfer Protocol (HTTP) version 1.1 to communicate with other Web entities on the network. We will look at some of the key HTTP headers that the Cisco IP Phone supports. The full HTTP 1.1 Specification is available as RFC-2616 on the Internet Engineering Task Force Web site at the following URL:

• http://www.ietf.org/rfc/rfc2616.txt

HTTP headers provide functions like content refresh, content expiration, and session cookies for state management. This information helps developers understand the types of applications and solutions that can be ...