Information Technology Reference
In-Depth Information
2
IP Trunks
Site 1
Site 2
WAN
PSTN
Router
Router
Ethernet
1
3
Signaling
Signaling
Voice
Corporate LAN
Voice
Switch
Switch
4
IP Soft Phone
(
Dual-Connect
)
Switch
IP Telephony
Signaling
Voice via PSTN
Voice Server
Voice Server
End User PC
5
IP Soft Phone
(
Single-Connect
)
IP Telephony
Voice & Signaling
Analog Station
End User PC
Digital Station
6
IP Phone
= Cross connects to house wiring
PSTN = Public Switched Telephone Network
End User PC
Figure 7.3
ip telephony endpoints oeriew. (
IP Telephony—The Business Case
, Keith D. Willett, April 2002.)
