[asterisk-users] Asterisk 1.8.10

[Yaroslav Panych]

Hi
As far as I know "Alert-Info" is as far as vendor specific extension
to SIP used by CISCO VOIP-gateways only. Didn't noticed any other
vendors to support that. Software clients neither. So such trick is
only usable in conjunction with CISCO.
Anyway, wait another answer, probably somebody knows more.

2012/6/12 motty.cruz <motty.cruz at gmail.com>:
> Hello,
> How to change ring tone on interncal call? I'm using Centos 5.8 Asterisk 1.8
>
> exten =>
> 666,1,SIPAddHeader("Alert-Info:<http://1.2.3.4/ringtones/ghost.wav>")
> exten => 666,n,Dial(SIP/10)
>
> The above would not how to defirenciate from internal call or external call?
>
>
> Thanks,
> motty
>
>
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