Subject: [Sip] Tone control for an existing dialog

From: "Henry Chen" <[email-masked]>
Date: Tue, 26 Feb 2002 10:36:53 -0600

Hi, 
    Is there any sip extension or mechanism to control  a SIP endpoint in an existing dialog to generate ringback / busy / reorder tones? 
 
    Thanks, 
 
    Henry