求救：刚安装的freetds却测试不通

安装完后用tsql -H10.0.0.153 -p1422 -Usa -Psapasswd显示：
locale is "C"
locale charset is "ANSI_X3.4-1968"
Msg 20009, Level 9, State -1, Server OpenClient, Line -1
Unable to connect: Adaptive Server is unavailable or does not exist
There was a problem connecting to the server

我的PHP之前已经安装的，好像是集成于apache2里的。
我试着用MSSQL的企业管理器直接去连是OK的。