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Cisco IAD2430 Series Integrated Access Devices Software Configuration Guide
OL-4306-03
Chapter 4 Configuring Voice over IP
VoIP Configuration Examples
Note
PBXs should be configured to pass all dual tone multifrequency (DTMF) signals to the Cisco IAD. We
recommend that you do not configure “store-and-forward” tone.
Note
If you change the gain or the telephony port, make sure that the telephony port still accepts DTMF
signals.
PSTN Gateway Access Using an FXO Connection
The following example shows how to configure VoIP to link users with the PSTN gateway using a
Foreign Exchange Office (FXO) connection.
In this example, users connected to Router SJ in San Jose, California, can reach PSTN users in Salt Lake
City, Utah, using Router SLC. Router SLC in Salt Lake City is connected directly to the PSTN through
an FXO interface.
Figure 4-3
shows the topology of this connection example.
Figure 4-3
PSTN Gateway Access Using FXO Connection Example
Note
This example assumes that the company already has established a working IP connection between its
two remote offices.
IAD SJ Configuration
! Configure pots dial-peer 1
dial-peer voice 1 pots
destination-p14081111111
port 2/0
! Configure voip dial-peer 2
dial-peer voice 2 voip
destination-p9...........
session target ipv4:172.16.65.182
! Configure the serial interface
interface serial 0/0
clock rate 2000000
ip address 172.16.1.123
no shutdown
95109
1(408) 555-4000
IAD SJ
FaE 0/0
Analog to FXS
FXO
San Jose
Salt Lake City
IAD SLC
172.16.1.123
172.16.65.182
PSTN user
Voice port
2/0
IP cloud
FaE 0/0
Voice port
2/0
PSTN
cloud
IAD
IAD