How to abbreviate All Trunks Busy?

The ways to abbreviate All Trunks Busy.

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15
ATB:
All Trunks Busy(Telecommunications, Telecom, Technology)
For more, try ALL TRUNKS BUSY on ALL ACRONYMS DICTIONARY
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APASmart Define. (2018). all trunks busy. Retrieved September 25, 2026, from http://smartdefine.org/all_trunks_busy/abbreviations/a
ChicagoSmart Define. 2018. "all trunks busy" http://smartdefine.org/all_trunks_busy/abbreviations/a (accessed September 25, 2026).
HarvardSmart Define 2018, all trunks busy, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/all_trunks_busy/abbreviations/a>.
MLASmart Define. "all trunks busy" 15 January 2018. Web. 25 September 2026. <http://smartdefine.org/all_trunks_busy/abbreviations/a>