[SIPForum-discussion] UAs

[Richard Shockey]

Manpreet Singh wrote:
> Richard
> 
> Thanks for the response. Yes I know about the reversed field, I think I 
> copied the example from 2916 instead. So I guess SRV is the right way to 
> go about it.

yes ..

> 
> Just on the side note, is there any document available explaining the 
> reason as to why the fields were reveresed? I have tested severel Uas, 
> including cisco UA ( GWs and IPIP GWs) and they fail the call with new 
> implementation, which is E2U+SIP. If you can share any document 
> explaining why this change was done, I would really appreciate it.

Well 3761 has been around for a while and UA's should be updated to 
reflect the change.

The judgment of the ENUM WG ( which I co-chair ) was the reversal was 
more in line with classic URI syntax and its was clear that there was 
going to be many Enumservice fields that were going to have longer and 
more complex expressions such as  E2U+mms:smtp etc using service type 
and subtype expressions.

The IANA registry for Enumservices is growing by the day.

> 
> Thanks
> Manpreet
> 
> 
-- 


 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Richard Shockey, Director - Member of Technical Staff
NeuStar Inc.
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