asterisk users - Oct 2008 - Is there a way to test SIP credentials without making a call?

Is there a SIP packet that a SIP client can send to Asterisk to  
confirm that the credentials entered by the user are correct, without  
placing a call?

We'd like to test the credentials when the user enters them, rather  
than wait until they try to make their first call.

--
Eric Chamberlain

hi,
(i am no sur):
the user credential is tested during SIP Registration Step
thanks and tel me if this is a error
----- Original Message ----- 
From: "Eric Chamberlain" <eric at rf.com>
To: "Asterisk Users Mailing List - Non-Commercial Discussion" 
<asterisk-users at lists.digium.com>
Sent: Saturday, October 11, 2008 5:20 PM
Subject: [asterisk-users] Is there a way to test SIP credentials 
withoutmaking a call?

> Is there a SIP packet that a SIP client can send to Asterisk to
> confirm that the credentials entered by the user are correct, without
> placing a call?
>
> We'd like to test the credentials when the user enters them, rather
> than wait until they try to make their first call.
>
> --
> Eric Chamberlain
>
>
>
>
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