Am 18.01.2011 15:30, schrieb Joegen Baclor:
> I don't think this can be done using plugins since plugins are only 
> given access to the request and not the responses.  You of course 
> could modify the proxy code to insert the alert-info header for 18x 
> responses.  You may also do this in sipXbridge if it is in the middle 
> of the flow.
>
> On Tuesday, 18 January, 2011 05:55 PM, David Becker wrote:
>> Am 17.01.2011 16:44, schrieb Douglas Hubler:
>>> On Mon, Jan 17, 2011 at 7:12 AM, David Becker
>>> <[email protected]>   wrote:
>>>> We're looking into having phones play different ringtones when 
>>>> called by
>>>> an external number as opposed to an internal one using the alert-info
>>>> header. Is there any existing functionality for this? If not, which
>>>> component would be the most suited for adding this value to SIP 
>>>> traffic
>>>> from the gateway?
>>> sipXproxy and sipXregistrar both have plugin architectures. Question
>>> is, would they have a list of the gateways to identify and would they
>>> be allowed to modify the SIP message which I believe you need.
>>> Outside that, fronting the sipXproxy with another proxy like opensips,
>>> kamailio, openser, opensbc... might be another option.
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>> Since we'd like to avoid adding a second proxy, how would one go about
>> adding a plugin to the proxy? If plugins are not capable of doing this
>> job, could we modify the proxy itself?
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>>
>
I meant the sound the receiving telephone makes when ringing, not the 
tone the caller hears while waiting for the callee to pick up. I believe 
that only requires modifying the INVITE.
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