[Serusers] serctl failure + authentication

[Gurol Akman]

folks

i'd appreciate if i could get some pointers re: following incidences...

1. my attempts to invoke serctl to add a new subscriber fail [error: 400; 
check if you use aliases in SER] at all times which suggest i must be doing 
something wrong.

2. when i enable the authentication code block in ser.cfg, my 1st 
registration attempt fails with a response type of 401 (unauthorized) which 
contains a WWW-Authenticate header. subsequently, my ua (x-lite softphone) 
sends another register message which contains an Authorization header with 
some number of credentials. unfortunately, this 2nd attempt also results in 
a 401 response. are there certain things that i should do on the 
client/server side to get ser authentication to work?

thanks for your help in advance,

gurol