Golden rule for telephone numbers with letters?

[coezbek]

I stumbled upon the following case where (the otherwise wonderful) PragmaticSegmenter trips up:

It will split a sentence containing a telephone number with letter characters 800.ACME.NOW is split after 800.:

    it "Telephone number with letters" do
      sentence = "If you have questions, call ACME Enterprises at 800.ACME.NOW (800.123.4567) or visit our website at: ACME-Enterprises.com."
      ps = PragmaticSegmenter::Segmenter.new(text: sentence, language: "en")
      expect(ps.segment).to eq([sentence])
    end