asterisk users - Jan 2011 - Regarding error in asterisk or SIPp

Hi every one,
                     I am using client as sipp and server as asterisk.... i
want to register an sipp client with asterisk..... I have configured
sip.conf and extensions.conf........ when i start asterisk and run sipp
register client.xml file i am getting result as

register------------------10
401------------------------10
register-------------------10
200OK-------------------------------------------------10 as unexpected
message

when i traced in wireshark and take a look at sipp -trace_err file i had
same error like : Aborting call on unexpected message while receiving 200 Ok
received 401---- unauthorized..

actually i have given .csv file also.......... i need help regarding
this........ i dont know exactly what is happening there?




Anybody help me plzzzzzzzzzzzzzz.........................



Best regards
viswavardhan
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