<p>Looks like it's printing the <strong>password</strong> as well. However, the password is NULL, so it seems like it's just appending a colon.</p>

<p>Nevertheless, the resulting uri "sip:15125551212:@example.com:5061;user=phone" seems valid according to <a href="http://www.in2eps.com/fo-abnf/tk-fo-abnf-sipuri.html">http://www.in2eps.com/fo-abnf/tk-fo-abnf-sipuri.html</a>.</p>

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