[VoIP] Legacy Ringback from Recordings in Asterisk

[Greg Blakely]

Unfortunately, t-mobile isn't providing any audio at all when it goes to
my switch -- unless I have the 'normal' ringback tone going.  I've tried
both a recording of an XY switch and a recording of the modulated
ringback tone -- a recording of a mercury drum tone plant.

I'm going to record plain old ESS-type ringing, and see if t-mobile will
pass it through, or whether they just won't allow recorded noises of any
type before they get answer supervision.

Cell providers!  What a hassle... 

> -----Original Message-----
> From: voip-bounces at ckts.info [mailto:voip-bounces at ckts.info] 
> On Behalf Of Shane Young
> Sent: Sunday, April 22, 2007 5:54 PM
> To: voip at ckts.info
> Subject: Re: [VoIP] Legacy Ringback from Recordings in Asterisk
> 
> 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
> 
> 
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