Registry for terminal DA responses?

[Michael Sokolov]

Hello again,

As I was working on my terminal application (people usually say "terminal
emulator", but I avoid that term since I'm creating a new terminal rather
than emulating one made by someone else), the following question came up:
there is a control sequence called Device Attributes (DA) whose generic
form CSI c requests that the terminal send another DA sequence back to
the host to identify itself.  Each DEC terminal, for example, has a unique
DA response.

This is what the ECMA 48 standard (equivalent of ISO 6429) says:

8.3.24	DA - DEVICE ATTRIBUTES

	Notation: (Ps)
	Representation: CSI Ps 06/03

	Parameter default value: Ps = 0

	With a parameter value not equal to 0, DA is used to identify
	the device which sends the DA.  The parameter value is a device
	type identification code according to a register which is to be
	established.  If the parameter value is 0, DA is used to request
	an identifying DA from a device.

My question is: does anyone know if such a registry exists and where can
one apply for a DA code assignment?  TIA,

MS