Spell rxgkTime correctly

Change-Id: I3266b10f59456ed73f532ad599ba6f4fb982df08
Spell start_time consistently with the rxgk document

Change-Id: Ic5773403550e803be7d1354156d9f379e50c3161
Fix typo/grammar

Change-Id: I6a6e36d92c73524f78915aa06195d67db8d37b88
Improve handling of call numbers

Change-Id: Ib846b5077743f349d5fec2cf86705bc2de71d16d