[VoIP] Legacy Ringback from Recordings in Asterisk

[Shane Young]

in an SS7 network, the ringback tone can be generated by the calling  
office, rather than the called office.

using "progress" will tell the calling office to listen to the audio  
from the far end.




Quoting John Novack <jnovack at stromberg-carlson.org>:

>
>
> John R. Covert wrote:
>> I notice that when I reposted the instructions for doing
>> legacy ringback using Music on Hold that I didn't mention
>> that you should put in a "Progress()" command before the
>> Dial.
>>
> Could you elaborate on the need for this??
>> That may affect certain people depending on how the provider
>> behaves.
>>
> And this as well?
> Sorry to appear ignorant.
>
> John Novack
>
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--Shane
+1-821-7311 CNET