Not able to fully under stood the questions. are you asking other
implementation of Alert-Info or you use you want to know the other user of
specific alert urn "urn:alert:service:call-waiting"

Their are few more implementation example for alert URN

urn:alert:tone:{tone-indication}


where the tone-indication identifies the semantic or rendering
      characteristics of a ring tone.



urn:alert:ringback:{ringback-indication}


      where the ringback-indication is a unique identifier for a
      country-specific ringback tone.


below is the link with more details.


https://tools.ietf.org/html/draft-liess-dispatch-alert-info-urns-01#section-4.4

Not seen urn:alert:service:call-waiting other than 3GPP.


On Fri, Jun 17, 2016 at 1:09 AM, Dale R. Worley <wor...@ariadne.com> wrote:

> Does anyone know of implementations of the 'alert' URNs in Alert-Info
> (RFC 7462) beyond the use of urn:alert:service:call-waiting by 3GPP?
>
> Dale
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-- 
Thanks and Regards

Dheeraj kumar

9999733671
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