[enum-wg] Why is there no "SMS center is here" ENUM record?

On 16 May 2012, at 12:23, Rick van Rein wrote:

> As far as I can tell, there is no ENUM record that says
> "please deliver SMS for this number at the SMS Centre
> at IP address 123:456::789" -- is there a reason for that?

NAPTRs can point at just about anything that has a URI scheme. So does  
RFC5724 "URI Scheme for Global System for Mobile Communications (GSM)  
Short Message Service (SMS) not meet your need? Admittedly, this talks  
about delivery to phone numbers rather than IP addresses.