B200P nt mode msn problem

HI,
sorry
If i setup
Ervin ---> channel 12
Leon ---> channel 13
this did not help. When i call 12 or 13 bouth phones ringing same time.
I have a question.
Is it possible to ISDN - NT B200P card set on one port more than one MSN?
There are two voice channels and 8 MSN numbers in ISDN?

Hi,
i made in freepbx:
3 extensions 31,32,33

channel: 12-13
signaling: bri_net_ptmp
dial: DAHDI/i3/31
and
dial: DAHDI/i3/32
and
dial: DAHDI/i3/33

phone setup with msn 31,32,33

This works.
I can call to 31 and only phone with msn 31 rings.