Chapter 4: Configuring Sip, Spcp, And Nat; Session Initiation Protocol And Cisco Ip Phones - Cisco WIP310 - iPhone Wireless VoIP Phone Administration Manual
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Configuring SIP, SPCP, and NAT
Session Initiation Protocol and Cisco IP Phones
Cisco SPA 500 Series and WIP310 IP Phone Administration Guide
The Cisco SPA 500 Series and Wireless IP Phones use the following protocols:
•
Session Initiation Protocol (SIP)—Cisco SPA 500 Series, WIP310
•
Cisco Smart Phone Control Protocol (SPCP)—Cisco SPA 500 Series
This chapter describes how to configure the phone protocols and other
parameters. It contains the following sections:
•
Session Initiation Protocol and Cisco IP Phones, page 80
•
Configuring SIP, page 83
•
Configuring SPCP on the Cisco SPA 525G, page 103
•
Configuring SPCP on the Cisco SPA 50XG, page 104
•
Network Address Translation (NAT) and Cisco IP Phones, page 104
Cisco IP phones use Session Initiation Protocol (SIP), allowing interoperation with
all ITSPs 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 following diagram shows a SIP request for connection to another subscriber
in the network.
In typical commercial IP telephony deployments, all calls go through a SIP proxy
server. The requesting phone is called the SIP user agent server (UAS), while the
receiving phone is called the user agent client (UAC).
controls the attributes of an end-to-end call.
4
80
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