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Table of Contents
Linksys SPA9x2 Administration Guide 2
Downloaded Ring Tones 33
Ring Tone Notes 33
For more information about downloading ring tones, see: 33
What’s Next? 33
Chapter 3: Setting System Features . . . . . . . . . . . . . . . . . 35
Setting Security Features 35
SIP Initial INVITE and MWI Challenge 35
SIP Over TLS 35
SRTP and Securing Calls 36
Ensuring Voice Quality 37
Supported Codecs 37
Bandwidth Requirements 38
Factors Affecting Voice Quality 39
Setting System Features 40
Setting System Configuration Information 41
System Configuration Notes 41
Setting Internet, IP and PPPoE Information 42
DHCP and PPPoE Notes 42
Setting a Static IP Address on the IP Phone 42
Setting Optional Network Parameters 43
Optional Network Configuration Notes 43
Configuring VLAN Settings 44
VLAN Settings Notes 44
Chapter 4: Setting SIP Parameters . . . . . . . . . . . . . . . . . . 45
SIP Parameters 45
SIP Parameter Notes 46
SIP Timer Values 48
SIP Timer Notes 48
Response Status Code Handling 51
Response Status Notes 51
RTP Parameters 51
RTP Notes 51
SDP Payload Types 52
SDP Payload Parameters 52
NAT Support Parameters 53
NAT Support Parameter Notes 53
Linksys Key System Parameters 53
Linksys Key System Notes 54
Chapter 5: Provisioning Basics . . . . . . . . . . . . . . . . . . . . 55
Provisioning Capabilities 55
Provisioning Configuration from Phone Keypad 56
Configuration Profile 56
Upgrading, Resyncing, and Rebooting Phones 57
Upgrading Firmware on a Phone 57
Resyncing a Phone 58
Rebooting a Phone 58
Redundant Provisioning Servers 59