E-911 Trunking

An E911 trunk can transmit Automatic Number Identification (ANI) of a 911 call from the caller's central office (CO) to the E911 system.

Benefits includes:

Helps speed response and save lives

Provides security for vital E911 calls

Features includes:

Provides a direct connection to the E911 network

Product Details includes:

  • When a 911 call is made, the local CO routes it to the E911 network, which is a dedicated portion of the Public Switched Telephone Network (PSTN). Here's how it works:
  • The call is routed to a local E911 trunk between the local CO and the E911 tandem CO. The tandem CO then routes the 911 call to the appropriate Public Safety Answering Point (PSAP) via a PSAP E911 Trunk.
  • The PSAP answers the call and the callers location commonly referred to as Automatic Location Identification (ALI) is displayed on a computer screen along with an electronic map display identifying the callers location in most instances. The 911 call taker can then dispatch emergency personnel or transfer the caller to the appropriate agency for dispatch.

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