[Asterisk-Dev] Distinctive ringing on Cisco 79xx - useful feature

[Christoph Frei]

Hi Todd,

John Todd wrote:

> Interesting feature on the Cisco 79xx phones that you can activate 
> distinctive ringing with an additional SIP header.  It would be really 
> useful to permit this as a set-able variable in a dialplan, so that 
> different inbound callers might activate different ringtones, or the 
> same ringtone in a quieter format based on time of day.

If this is not possible within asterisk, is there a way to change the 
ring of a line on the phone itself?
Is there a way to insert a variable into an outgoing INVITE?


Greetings,

Chris