asterisk users - Mar 2007 - make calls with different phone numbers

Hi everybody,
i've a E1 connection with 30 phone numbers, i'm using freepbx
(trixbox) with TE110P card,
when i call my sell phone just the first number of E1 is always showed
evenif i set up different trunk with different zapchannel
(g0,1,2,3...)
for example when i type 1MyPhonenumber , i get the Head of line
555-55555 (the trunk is g0)
when i type 3Myphonenumber, i get also the same 555-55555 (the trunk
is channel 3) or the normaly the number that it must be shown is
555-55557
any help :)
Kind Regards