The Next Generation 9-1-1 Guide for 9-1-1 Authorities
https://cdn.ymaws.com/www.nena.org/resource/resmgr/standards/nena-ref-005.1-2020_ng911_gu.pdf
WEBreferred to as an Emergency Services IP Network (ESInet), replace existing narrowband, circuit switched 9‐1‐1 networks which carry only voice, and very limited data. Existing E 9-1-1 networks do not support such things as real-time text messages for emergencies, images and video (including support for American Sign Language users), and
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