Zyxel-communications 802.11g Wireless ADSL2+ 4-port VoIP IAD P-2602HWNL Manual de usuario Pagina 167

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 442
  • Tabla de contenidos
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 166
P-2602HWNLI User’s Guide
Chapter 11 Voice 167
11.2.3.1 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 89 SIP User Agent
11.2.3.2 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.
Vista de pagina 166
1 2 ... 162 163 164 165 166 167 168 169 170 171 172 ... 441 442

Comentarios a estos manuales

Sin comentarios