Fxo Gateway To Pstn - Cisco WS C4224V 8FXS - 200Mbps Ethernet Switch Software Configuration Manual

FXO Gateway to PSTN

Figure C-3 FXO Gateway to PSTN (Example)
Catalyst 4224 SJ
(408) 555-4000
San Jose
Voice port
0/0
Note
Catalyst 4224 Access Gateway Switch Software Configuration Guide
C-10
Foreign Exchange Office (FXO) interfaces provide a gateway from the VoIP
network to the analog public switched telephone network (PSTN) or to a PBX that
does not support Ear and Mouth (E&M) signaling.
In this scenario, users connected to Catalyst 4224 SJ in San Jose, California, can
reach PSTN users in Salt Lake City, Utah, via Catalyst 4224 SLC. Router SLC in
Salt Lake City is connected directly to the PSTN through an FXO interface.
Figure C-3 illustrates the topology of this scenario.
IP cloud
V
172.16.65.182
172.16.1.123
This example assumes that the company has already established a working IP
connection between its two remote offices.
Appendix C
Catalyst 4224 SLC
V
(801) . . . . . . .
Salt Lake City
Voice port
0/0
VoIP Configuration Examples
PSTN user
PSTN
cloud
OL-2031-02