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TK-PCM-E1-60 is 1U High, which provides telephone outputs 60, Equipment electrical part for the whole digital circuits, machine reliability, stability, low power consumption, high integration, small size, easy installation and maintenance. Many customers are telecommunications operators 2*E1 leased lines used in computer networking, this equipment can be rented at the E1 line opened a few line phone, you can make free calls between headquarters and branch offices of this.