[VoIP] Legacy Ringback from Recordings in Asterisk

[Greg Blakely]

I have noticed that not everyone can hear my ringback tone.

For example, when I call in from my t-mobile phone, I hear silence until
the call is answered.

Additionally, when my mom calls long distance from Colorado Springs, she
says that all she hears is a "weird noise" until the call is answered.

Thinking that it may have to do with the codecs accepted for incoming
calls, I am left to wonder:

Should I have a .gsm file in the same directory?   

(I have an ISDN PRI line that accepts two different audio types (au3 and
another I can't remember), as well as C56 and C64.




John Covert wrote:
> 
> It has been asked before if it's possible in Asterisk to use 
> a recording for ringback.  The answer is YES.  IMHO, don't 
> bother unless you've got a good ulaw recording, but anyway, 
> here's how.
> 
>
 8<  SNIP    8<