exten=>999,1,goto(context1,s,1)

[context1]
exten => s,1,goto(context2,s,1)

[context2]
exten => s,1,saynumber(111)

context		exten	priority	app	appdata
context1,	s	1		goto	context2|s|1
context2,	s	1		saynumber	111