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Chapter 15 Voice
Basic Home Station VDSL2 P8802T User’s Guide
223
SIP Servers
SIP is a client-server protocol. A SIP client is an application program or device that
sends SIP requests. A SIP server responds to the SIP requests.
When you use SIP to make a VoIP call, it originates at a client and terminates at a
server. A SIP client could be a computer or a SIP phone. One device can act as
both a SIP client and a SIP server.
SIP User Agent
A SIP user agent can make and receive VoIP telephone calls. This means that SIP
can be used for peer-to-peer communications even though it is a client-server
protocol. In the following figure, either A or B can act as a SIP user agent client to
initiate a call. A and B can also both act as a SIP user agent to receive the call.
Figure 95
SIP User Agent
SIP Proxy Server
A SIP proxy server receives requests from clients and forwards them to another
server.
In the following example, you want to use client device A to call someone who is
using client device C.
1
The client device (A in the figure) sends a call invitation to the SIP proxy server
(B).
Summary of Contents for P8802T
Page 10: ...Table of Contents Basic Home Station VDSL2 P8802T User s Guide 10...
Page 11: ...11 PART I User s Guide...
Page 12: ...12...
Page 58: ...Chapter 2 User Setup Guide Basic Home Station VDSL2 P8802T User s Guide 58...
Page 59: ...59 PART II Technical Reference...
Page 60: ...60...
Page 74: ...Chapter 3 Device Info Screens Basic Home Station VDSL2 P8802T User s Guide 74...
Page 120: ...Chapter 6 Network Address Translation NAT Basic Home Station VDSL2 P8802T User s Guide 120...
Page 150: ...Chapter 10 DNS Setup Basic Home Station VDSL2 P8802T User s Guide 150...
Page 160: ...Chapter 11 UPnP Basic Home Station VDSL2 P8802T User s Guide 160...
Page 168: ...Chapter 12 USB Services Basic Home Station VDSL2 P8802T User s Guide 168...
Page 200: ...Chapter 14 Wireless Basic Home Station VDSL2 P8802T User s Guide 200...
Page 204: ...Chapter 15 Voice Basic Home Station VDSL2 P8802T User s Guide 204...
Page 240: ...Chapter 16 Diagnostic Basic Home Station VDSL2 P8802T User s Guide 240...
Page 244: ...Chapter 17 Settings Basic Home Station VDSL2 P8802T User s Guide 244...
Page 248: ...Chapter 18 Log Basic Home Station VDSL2 P8802T User s Guide 248...
Page 252: ...Chapter 19 TR 069 Client Basic Home Station VDSL2 P8802T User s Guide 252...
Page 254: ...Chapter 20 Internet Time Basic Home Station VDSL2 P8802T User s Guide 254...
Page 256: ...Chapter 21 Access Control Basic Home Station VDSL2 P8802T User s Guide 256...
Page 260: ...Chapter 23 Reboot Basic Home Station VDSL2 P8802T User s Guide 260...
Page 268: ...Chapter 24 Troubleshooting Basic Home Station VDSL2 P8802T User s Guide 268...
Page 272: ...Appendix A Legal Information Basic Home Station VDSL2 P8802T User s Guide 272...