14.1.3 Callback-Number

ATTRIBUTE Callback-Number 19 string

	Users:	-R
	Hints:	--
	Huntgroups:	--
	Additivity:	Replace
	Proxy propagated:	No

This attribute indicates a dialing string to be used for callback. It may be used in Access-Accept packets. It may be used in an Access-Request packet as a hint to the server that a Callback service is desired, but the server is not required to honor the hint.