The ringback tone is generated locally by the callers user agent - typically as soon as the 180 ringing is received.
If a 183 Early media is received, the callers UA will use the incoming RTP stream as ringback tone.
klaus
GR S wrote:
Folks,
Sorry to bother you all with such a silly question, but I am facing some issues with ringback tones. I am using SJphones with SER. They work perfectly well, I can make calls to other extensions and talk. I am maintaining a list of valid users in a database table, and have a small module which checks the authennticity of the dialed extension when SER receives INVITEs, and if it is valid, the call is t_relayed to the called extension. My problem is when an extension is dialed, I cannot hear the ringing tone at the callers end. I searched on the archives, but could not find mails addressing such a problem. Obviously I am missing something here. Can anyone help?
Thanks for your time...
Regards, Girish
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