Chapter 10 The VoIP Account Screens
BM2022 Users Guide
154
SIP Service Domain
The SIP service domain of the VoIP service provider (the company that lets you make phone calls
over the Internet) is the domain name in a SIP URI. For example, if the SIP address is
, then VoIP-provider.com is the SIP service domain.
SIP Register Server
A SIP register server maintains a database of SIP identity-to-IP address (or domain name)
mapping. The register server checks your user name and password when you register.
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 79
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
).
2
The SIP proxy server forwards the call invitation to C.
Figure 80
SIP Proxy Server
A
B
A
C
B
1
2
Содержание BM2022
Страница 12: ...15 PART I User s Guide ...
Страница 22: ...Chapter 2 Introducing the Web Configurator BM2022 User s Guide 26 ...
Страница 55: ...59 PART II Technical Reference ...
Страница 56: ...60 ...
Страница 60: ...Chapter 5 System Status BM2022 User s Guide 64 ...
Страница 86: ...Chapter 6 WiMAX BM2022 User s Guide 90 ...
Страница 187: ...Chapter 12 Maintenance BM2022 User s Guide 192 ...
Страница 193: ...Chapter 13 Troubleshooting BM2022 User s Guide 198 ...
Страница 203: ...Appendix A WiMAX Security BM2022 User s Guide 208 ...
Страница 237: ...Appendix C Pop up Windows JavaScript and Java Permissions BM2022 User s Guide 242 ...
Страница 273: ...Appendix E Importing Certificates BM2022 User s Guide 278 ...