Does anyone know the mechanism by which companies like YouMail (and MNO's using their own voicemail system) are able to redirect ALL calls from a ALL subscribers to *just one* voicemail DID, yet determine WHICH subscriber did the redirection?
I had always assumed this was simply done using RDNIS. In other words, the original calling party's CallerID is passed with the redirected call, (and I assumed) the redirecting subscriber's number was passed via RDNIS--thusly the voicemail system knows to place the call into the voicemail account belonging to the RDNIS value. In practice I find that YouMail, when presented with a redirected call as described above ignores the RDNIS value and prompts me for an subscriber account number. By contrast, when various MNO's do the redirection, YouMail is able to determine the redirecting subscriber account number--presumably some other way. Does anyone know the mechanism(s) by which this is normally done? Is there even a 'normal' way to do this (such as a QSIG call transfer message), or is truly home-spun and carrier-specific, such as a Q.931 facility message. Any advice on the subject would be much appreciated! Thanks! -Karl -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
