More IAX trunk

hi, could someone tell if asterisk can use more than one iax connection?
i have this in iax.conf:
[general]
register => 600367:********@iax.freevoice.cz
register => 600411:@iax.freevoice.cz
register => 600412:
@iax.freevoice.cz
[600367]
type = user
context = pecek
secret = **********
username = 600367
[600367]
type = peer
secret = ******
username = 600367
host = iax.freevoice.cz
qualify = yes
[600411]
type = user
context = karel
secret = *******
username = 600411
[600411]
type = peer
secret = ********
username = 600411
host = iax.freevoice.cz
qualify = yes
[600412]
type = user
context = bulantovi

[600412]
type = peer
secret = ******
username = 600412
host = iax.freevoice.cz
quality = yes
if a call comes on any number, its always go to context witch is defined in the last section. could someone tell me how can I for example put a call to a context defined in the firt section?
thanks a lot. bye Lokiji

you mean like

Dial(IAX2/credentials@extension@context) ?