ES (Emergency Service) Trunks

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ES (Emergency Service) Trunks are message trunks capable of providing ANI, connecting the serving central office of the 9‑1‑1 calling party and the designated E9‑1‑1 Control Office.

Relevant NENA Documents
Note: To find and download the document, copy the document number (like NENA-STA-010) from below and search the NENA Standards and Documents page.

NENA 03-502, Trunking for Private Switch 9-1-1 Service Technical Information Document (TID)

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