Vietnamese disconnect tone string for Cisco Linksys SPA devices

I have recently acquired a Cisco SPA8800 device to do a VoIP installation. I was having a lot of trouble getting it to recognise the disconnect tones for my landline. I recorded some, analysed them, and--with the help of these awesome instructions--created a disconnect string.

So, to help others in Vietnam and beyond, here is the disconnect string for Vietnam (specifically VNPT in the south of Vietnam):

430@-30,430@-30;1(.5/.5/1+2)