NENA Urges Continuing Support for TDM

The National Emergency Number Association urged that the FCC require carriers to continue to support time-division multiplexing (TDM) as they move to IP-based services. NENA said the transition is “occurring unevenly.” NENA “wants to ensure that all calls to 9-1-1 are completed” and there is a “need to support TDM delivery of 9-1-1 traffic to selective routers for the immediately foreseeable future,” said a filing posted Thursday in docket 21-17.