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Emergency service identification Old: sos.fire@example.com New: only ‘sos’, but add callee capabilities, e.g., Accept-Contact: *;service=sos.fire Fits better into call routing architecture only ‘sos’ needed for coarse routing ECC and call taker can register for appropriate service specialty apparently, mountain rescue is sometimes managed separately (Switzerland) Can no longer be typed directly by human user assume that users don’t type ‘sos’, but rather numbers or (rarely) select emergency services from menu Dialplan-by-DNS mapping more difficult no longer just a string translation |