asterisk users - Oct 2008 - What syntax to send user:pass in SIP Dial string?

Hi All,

I'm trying to get the user:pass embedded in a SIP Dial string instead
of calling a SIPuser in sip.conf:

Regular way, exten => 1234,1,Dial(SIP/${EXTEN}@sipuser|30|)
Where the 'sipuser' is a context on sip.conf
[sipuser]
fromuser=sipuser

What I would like to do is embed the username:password in the Dial
string, something like this:
exten => 1234,1,Dial(SIP/${EXTEN}@user:password at 10.10.10.1|30|)
doesn't work though, can't create sip channel.

I'm not sure if this can be done?

Any guidance will be appreciated.

JR
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JR Richardson
Engineering for the Masses