No, you just configure 2 pots dial-peers . For instance,if you have 2 analog phones with extensions 1111 connected to port 0/0 and 2222 on port 0/1 your configuration should look like that
dial-peer voice 1 pots
destination-pattern 1111
port 0/0
dial-peer voice 2 pots
destination-pattern 2222
port0/1