Loopback
Loopback is a type of diagnostic test in which a transmitted signal is returned to the transmitting device and then compared to the original signal.
Relevant NENA Documents
Note: To find and download the document, copy the document number (like STA-010) from below and search the NENA Standards and Documents page.
NENA-STA-010, NENA i3 Standard for Next Generation 9-1-1