Chapter 4: Configuring Sip, Spcp, And Nat; Sip And Cisco Ip Phones - Cisco SPA301 Administration Manual

Configuring SIP, SPCP, and NAT

SIP and Cisco IP Phones

Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide
The Cisco SPA IP phones use the following protocols:
• Session Initiation Protocol (SIP)—Cisco SPA300 Series, Cisco SPA500
Series, Cisco WIP310
• Cisco Smart Phone Control Protocol (SPCP)—Cisco SPA300 Series,
Cisco SPA500 Series
This chapter describes how to configure the phone protocols:
• SIP and Cisco IP Phones
• Configuring SIP
• Configuring the IP Phone Communications Protocol
• Configuring the Protocol on a Cisco SPA300 Series or Cisco SPA500
Series IP Phone
• Managing NAT Transversal with Cisco IP Phones
Cisco IP phones use Session Initiation Protocol (SIP), allowing interoperation with
all IT service providers supporting SIP.
SIP handles signaling and session management within a packet telephony
Signaling
network. allows call information to be carried across network
Session management
boundaries.
The diagram shows a SIP request for connection to another subscriber in the
network.
controls the attributes of an end-to-end call.
4
114