[Serusers] ATA phone not working

[Min ZOU]

Hi,

I am trying to get an ATA phone working for SER server.
Now the ATA phone can receive calls from softphone(kphone) on a PC, 
while it cannot call out. (softphone, ATA phone and SER server are in 
the same subnet)

$ serctl ul show 100
<sip:100 at 192.168.1.100:5600>;q=0.00;expires=802

Any idea on how to resolve the problem? Thanks!

-- 
Best regards,
Min