Cisco SPA 501G Administration Guide

Cisco SPA 500 Series and WIP310 IP Phone Administration Guide 4
Contents
Chapter 4: Configuring SIP, SPCP, and NAT 78
Session Initiation Protocol and Cisco IP Phones 78
SIP Over TCP 79
SIP Proxy Redundancy 80
RFC3311 Support 80
Support for SIP NOTIFY XML-Service 81
Configuring SIP 81
Configuring SIP Parameters 81
Configuring SIP Timer Values 85
Configuring Response Status Code Handling 88
Configuring RTP Parameters 88
Configuring SDP Payload Types 90
Configuring SIP Settings for Extensions 93
Configuring a SIP Proxy Server 97
Configuring Subscriber Information Parameters 100
Configuring SPCP on the Cisco SPA 525G 101
Configuring SPCP on the Cisco SPA 50XG 102
Network Address Translation (NAT) and Cisco IP Phones 102
NAT Mapping with Session Border Controller 103
NAT Mapping with SIP-ALG Router 103
Configuring NAT Mapping with a Static IP Address 103
Configuring NAT Mapping with STUN 104
Determining Whether the Router Uses Symmetric or
Asymmetric NAT 106
Chapter 5: Configuring Security, Quality, and Network Features 108
Setting Security Features 108
SIP Initial INVITE and MWI Challenge 109
SIP Over TLS 109
SRTP and Securing Calls 110
Secure Call Indication Tone 111

Cisco SPA 501G Specifications

General

Brand	Cisco
Model	SPA 501G
Category	IP Phone
Language	English