User Guide

2 • Applications overview Model 4520 & 4110 Series Getting Started Guide
32 Applications for SmartNode 4520 Series
Application—Single-phone PSTN and VoIP access
The SmartNode 4520 Series with a combination of FXS and FXO ports can be used to make and receive calls
via PSTN and Internet calling services over the same telephone handset (see figure 15). Using individually con-
figurable routing tables, an outbound call can be directed to the local PSTN connection or to an Internet tele-
phony service provider (ISTP). Inbound calls from the Internet and the PSTN can ring the same phone.
Figure 15. Single-phone access
Console
VoIP Gateway Router
ToIP Integrated Access Device
SmartNode 4524
Link
100M
Activity
0/0
0/1
0/2
0/3
Enet 0 Voice Ports
Power
Run
VoIP Link
Link
100M
Activity
Enet 1