>> Really, Assyrian (and cuneiform writing at all) had no signs
for
phonemes more back then velar/uvular. Perhaps, Hebrew spelling can
help? Is Hebrew or Phoenician word for Assur known? Although,
unfortunately, Hebrew has no words with initial vowels. So there
automatically is to be a glottal stop. But another laringeals can
testify that they were also in Assyrian.
> Hebrew has aleph in the
word for Assur.
So, no certainty... Assyrian
still may have the aleph (= glottal stop) as well, and may have no initial
consonant.