1.Application:ADSL over POTS with billing tone and 2.Standard :ETSI TR 101 728-1-1 & ETSI TR 101 952-1-1 and ITU-T G.992.1 & ITU-T G.992.5 Complicance with ADSL2&2+ The spliiter can be used in North American,Southeast Asia. We can provide samples for free. We looking forward to doing business with you! Currency: USD Unit Price: interview Quantity: 500k pcs Delivery: We can provide you with our free samples for your testing approval. The goods can be delivered to the door by air or by sea, as requested.