Got some stuck here with understanding of how systems include terminator for address signals (F-filler). Some just insert it for called party like 84 10 36 99 69 27 40 32 0f (this is called party), some do not. The problem is how to understand rules for inserting this terminator into calling or called party numbers. I have a feeling this is up to design to make address length even or odd...lost here ;)
Can someone give a hint here?