error on fist steps

hi,
Sorry my noob question.
I try run unixODBC and FreeTDS but still having problem, I try connect with tsql and run fine, but with isql no, and with software in .c no run.
need help to solve this please.
let me show.
tsql:
ts7500:~# odbcinst -s -q
[MSSQLTestServer]
[NSSQL]
ts7500:~# odbcinst -d -q
[FreeTDS]
ts7500:~# tsql -S MSSQLTestServer -U sa
Password:
locale is "C"
locale charset is "ANSI_X3.4-1968"
using default charset "ISO-8859-1"
1> use Teste
2> select * from tabela1
3> go
ID Nome
1 Reinaldo
3 Charles
10 Teste
(3 rows affected)
1>
Now isql
ts7500:~# isql MSSQLTestServer sa **** -v
[S1000][unixODBC][FreeTDS][SQL Server]Unable to connect to data source
[01000][unixODBC][FreeTDS][SQL Server]Adaptive Server connection failed
[01000][unixODBC][FreeTDS][SQL Server]Unexpected EOF from the server
[ISQL]ERROR: Could not SQLConnect
ts7500:~#
and with software basic connect sample
ts7500:~/temp# ./conect
Failed to connect
The driver reported the following diagnostics whilst running SQLDriverConnect
08001:1:0:[unixODBC][FreeTDS][SQL Server]Unable to connect to data source
01000:2:20002:[unixODBC][FreeTDS][SQL Server]Adaptive Server connection failed
01000:3:20017:[unixODBC][FreeTDS][SQL Server]Unexpected EOF from the server
ts7500:~/temp#