AT&T feature module 2 system manual Transfer Return Interval, Dial #306

Administration Procedure	Do This
Transfer Return Interval	1 Touch Message.
	2 Dial #306.
	3 Dial number of rings (1 through 9) preferred before calls return to
	original voice terminal. Dial 0 if transferred calls should not return.
	4 Touch Message.

3-16Button Code Administration Procedures