D-Link DI-1750 Reference Manual page 465

Model Name
12.4.4 Configure Dial Peers
The key point to understand how Voice over IP functions is to understand dial peers. Each dial peer
defines the characteristics associated with a call leg, as shown in Figure 1 and Figure 2. A call leg is a
discrete segment of a call connection that lies between two points in the connection. All the call legs for
a particular connection have the same connection ID.
Four call legs make comprise and end-to-end call—two from the perspective of the source router as
shown in Figure 1, and two from the perspective of the destination router as shown in Figure 2. Dial
peers are used to apply attributes to call legs and to identify call origin and destination.
Dial peers are used for both inbound and outbound call legs. An inbound call leg originates outside the
router. An outbound call leg originates from the router. For inbound call legs, a POTS dial peer might be
associated to the calling setup. POTS peers associate a telephone number with a particular voice port
so that incoming calls for that telephone number can be received and outgoing calls can be placed. For
outbound call legs, this call is associated with the the VoIP dial peer at setup time. VoIP peers associate
destination telephone numbers with a specific IP address so that outgoing calls can be placed.
IP Voice Equipment Connection
Figuer 12-3
To configure call connectivity between the source and destination as illustrated in Figure 3, enter the
following commands on 2621 (10.1.2.2):
2621_config#dial-peer voice 1 pots
2621_config_dialpeer#destination pattern 2601
2621_config_dialpeer#port 1/0
2621_config_dialpeer#exit
2621_config#dial-peer voice 2 pots
2621_config_dialpeer#destination pattern 2602
2621_config_dialpeer#port 1/1
2621_config_dialpeer#exit
2621_config#dial-peer voice 3 voip
2621_config_dialpeer#destination-pattern 170.
2621_config_dialpeer#session target ipv4: 10.1.1.2
2621_config_dialpeer#exit
Enter the following commands on 1750(10.1.1.2):
1750_config#dial-peer voice 1 pots
1750_config_dialpeer#destination-pattern 1701
1750_config_dialpeer#port 1/0
1750_config_dialpeer#exit
1750_config#dial-peer voice 2 pots
1750_config_dialpeer#destination-pattern 1702
1750_config_dialpeer#port 1/1
1750_config_dialpeer#exit
1750_config#dial-peer voice 3 pots
1750_config_dialpeer#destination-pattern 1703
1750_config_dialpeer#port 2/0
1750_config_dialpeer#exit
1750_config#dial-peer voice 4 pots
1750_config_dialpeer#destination-pattern 1704
1750_config_dialpeer#port 2/1
1750_config_dialpeer#exit
1750_config#dial-peer voice 5 voip
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