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Cisco SPA500 Series and WIP310 IP Phone Administration Guide
4
Contents
Configuring SIP
71
Configuring SIP Parameters
71
Configuring SIP Timer Values
74
Configuring Response Status Code Handling
77
Configuring RTP Parameters
78
Configuring SDP Payload Types
79
Configuring SIP Settings for Extensions
82
Configuring a SIP Proxy Server
86
Configuring Subscriber Information Parameters
89
Configuring SPCP on the SPA525G
90
Configuring SPCP on the SPA50XG
91
Network Address Translation (NAT) and Cisco IP Phones
91
NAT Mapping with Session Border Controller
92
NAT Mapping with SIP-ALG Router
92
Configuring NAT Mapping with a Static IP Address
92
Configuring NAT Mapping with STUN
93
Determining Whether the Router Uses Symmetric or Asymmetric NAT
95
Chapter 5: Configuring Security, Quality, and Network Features
97
Setting Security Features
97
SIP Initial INVITE and MWI Challenge
97
SIP Over TLS
98
SRTP and Securing Calls
99
Secure Call Indication Tone
100
Ensuring Voice Quality
100
Supported Codecs
101
Bandwidth Requirements
102
Factors Affecting Voice Quality
103
Configuring Voice Codecs
105
Configuring Domain and Internet Settings
108
Configuring Restricted Access Domains
108
Configuring DHCP, Static IP, and PPPoE Information
108