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Linksys IP Phone Administrator Guide
Firmware Version 5.1
CONTENTS
Document Audience i-ix
How This Document is Organized i-x
Related Documentation i-x
Technical Support i-x
CHAPTER
1 Introducing Linksys IP Phones 1-1
Overview 1-1
Linksys IP Phone Features 1-2
SPA901 Features 1-4
SPA92x, SPA94x, SPA962 1-4
Ensuring Voice Quality 1-4
Feature Descriptions 1-5
SIP Proxy Redundancy 1-5
Supported Codecs 1-6
Other Features 1-7
Technology Background 1-8
Session Initiation Protocol 1-9
Using Linksys IP Phones with a Firewall or Router 1-9
Network Address Translation 1-10
NAT Overview 1-10
NAT Types 1-11
Simple Traversal of UDP Through NAT (STUN) 1-11
SIP-NAT Interoperation 1-12
CHAPTER
2 Getting Started 2-1
Linksys 900 Series IP Phones 2-1
Caring for Your Hardware 2-2
SPA901 2-2
Front Panel and Side of Phone 2-3
Back Panel 2-3
SPA92x, SPA94x, and SPA962 Hardware Features 2-3
SPA921 2-4