/system scheduler
add name=onreboot on-event=":delay 00:00:5\r\
    \n:if ([/interface get [find name=\"ppp-out1\"] running]=!true) do={/system routerboard usb power-reset duration=1}" policy=\
    ftp,reboot,read,write,policy,test,password,sniff,sensitive,romon start-time=startup
add interval=00:01:15 name=tc on-event=tc policy=ftp,reboot,read,write,policy,test,password,sniff,sensitive,romon start-time=startup

/system script
add name=tc owner=admin policy=ftp,reboot,read,write,policy,test,password,sniff,sensitive,romon source=":if ([/interface get [find name=\"pptp-out1\"] running]=!true) do={\
    \r\
    \n:interface ppp-client set apn=wap numbers=0\r\
    \n:delay 25\r\
    \n:interface ppp-client set apn=mms numbers=0\r\
    \n:delay 10\r\
    \n:interface disable pptp-out1\r\
    \n:delay 1\r\
    \ninterface enable pptp-out1\r\
    \n}"