Anytime Ex FSO GRIFFO.
I spent a few years flying around that part of the world from the mid 90s through 2000. The first months were rather nerve racking especially approaching FIR Boundry Points. I compare it to going to somebody's home, knocking on their door and no ones home. The next best thing was to try the old radio relay thing. During those years, Perth was a great help, even when we tried to contact Jaakarta Radio when approoching their area of control! I would hope that there would be some improvement.
Sure was interesting flying.