Architectural Components - Linksys SPA9000 Administrator's Manual

SPA9000 Architecture

Architectural Components

Figure 1-6
As shown in
and 4. Each line can be configured with the same or a different ITSP. Each SPA400 also occupies one
line interface. The SPA9000 has five internal clients that register implicitly with the internal SIP proxy:
•
•
•
•
•
FXS1 and FXS2 correspond to the two physical FXS ports. The FXS ports can only register with the
local SIP proxy. The Call Park is used to maintain calls that are parked, and AA is a scriptable
auto-attendant application.
Table 1-1
Architectural Component
SIP proxy and Registrar server
Media proxy server
Configuration server
Application server
Linksys SPA9000 Administrator Guide
1-12
SPA9000 Architecture
Application
server
Media (RTP) Proxy
FXS1 FXS2
Figure 1-6, the SPA 9000 provides four logical line interfaces, referred to as Line 1, 2, 3,
FXS1 (fxs1)
FXS2 (fxs2)
Call Park (callpark)
Auto-Attendant (aa)
Internal Music Server (imusic)
Architectural Components
SPA9000
Administration
Line 1
web server
Line 2
SIP Proxy
SIP Registrar
Line 3
Line 4
Call
aa imusic park
Function
Accepts registration from client stations and
proxies SIP messages.
Proxies RTP packets between client stations and
proxies SIP messages.
Serves configuration files to client stations and
auto configures un-provisioned client stations.
Supports advanced features such as call
park/pickup, directory, directed call pickup and
group paging, hunt groups, and shared line
appearances.
Chapter 1 Using the Linksys Voice System
(408)111-1000 to 7
ITSP SIP Proxy
(408)111-1111
SPA 400
(408)111-1112
SIP-PSTN
(408)111-1113
(408)111-1114
gateway
(949)111-2000 to 7
ITSP SIP Proxy
(888)111-3000 to 7
ITSP SIP Proxy
Document Version 3.01
PSTN