pLEASE HELP ! IVR MENU Cannot pass through when press 1~4

Here is my extentions.conf
PLEASE HELP!

[general]
static=yes
writeprotect=no
[globals]
CONSOLE=Console/dsp ; Console interface for demo
;CONSOLE=Zap/1
;CONSOLE=Phone/phone0
IAXINFO=guest ; IAXtel username/password
;IAXINFO=myuser:mypass
TRUNK=Zap/g2 ; Trunk interface
TRUNKMSD=1 ; MSD digits to strip (usually 1 or 0)

[mainmenu]
exten => s,1,Answer
exten => s,2,SetMusicOnHold(default)
exten => s,3,DigitTimeout,5
exten => s,4,ResponseTimeout,10
exten => s,5,Playback(welcome) ;welcome message
exten => s,6,Background(options,15) ;options
exten => t,1,Goto(default,201,1)
exten => i,1,Playback(invalid)
exten => i,2,Goto(s,2)
exten => 1,1,Goto(sales,1001,1)
exten => 2,1,Goto(support,1001,1)
exten => 3,1,Goto(til,1001,1)
exten => 4,1,Goto(ahfu,1001,1)

[sales]
exten => 1001,1,Playback(thank_you) ; Calls may be recorded notice
exten => 1001,2,SetVar(CALLFILENAME=ACCOUNTS-RESERV-${CALLERIDNUM}-${TIMESTAMP})
exten => 1001,3,Monitor(gsm,/etc/asterisk/recording/incoming/${CALLFILENAME},m)
exten => 1001,4,Goto(default,201,1)
exten => 1001,102,Congestion

[support]
exten => 1001,1,Playback(/etc/asterisk/sound/8)
exten => 1001,2,SetVar(CALLFILENAME=DEVELOPMENT-RESERV-${CALLERIDNUM}-${TIMESTAMP})
exten => 1001,3,Monitor(gsm,/etc/asterisk/recording/incoming/${CALLFILENAME},m)
exten => 1001,4,Goto(default,2203,1)
exten => 1001,102,Congestion

[til]
exten => s,1,Playback(hiterence) ;Hi terence
exten => s,2,Background(tiloption) ;for 1home press 2nantong 3yanhome 4manaustralia
exten => t,1,Goto(s,2)
exten => i,1,Playback(invalid)
exten => i,2,Goto(s,2)
exten => 1,1,Goto(tilnum,1001,1)
exten => 2,1,Goto(tilnum,1002,1)
exten => 3,1,Goto(tilnum,1003,1)
exten => 4,1,Goto(tilnum,1004,1)

[tilnum]
;Home
exten => 1001,1,Dial(SIP/0060xxxxxxxx@gossiptel,90,tr)
exten => 1001,2,Goto(default,201,1)
exten => 1001,3,Congestion
exten => 1001,101,Goto(default,201,1)
exten => 1001,102,Congestion

;nantong
exten => 1002,1,Dial(SIP/0086xxxxxxxxxx@gossiptel,90,tr)
exten => 1002,2,Goto(default,201,1)
exten => 1002,3,Congestion
exten => 1002,101,Goto(default,201,1)
exten => 1002,102,Congestion