ISDN NT 1 Plus supplies 2-wire bi-directional transferring ability of 2B+D and provides high-quality Internet access ,data transmission service and dials up to Internet via ISDN network with a high-speed data rate of 64kbps and 128kbps. Feature: Has cold start and warm start, and fixed timer and self-adapt time Provides point-to-point and point-to-multipoint connections Support Reverse Polarity for analog ports (for call metering) Directly accesses analog services such as ordinary phone,G3 fax, modem, etc One analog phone or one ISDN phone can work in the case of power failure Supports supplementary services such as MSN (Multiple Subscriber Number), SUB (sub address), CW (Call Waiting), 3PTY (Three Party Service), etc Call restriction function A law selectable by POTS Supports RVS-COM ISDN application packets Very strong compatibility: supports various switchers Supports caller ID,FSK type Ⅰor DTMF mode selectable by POTS Keeps the link status while switching between local power and remote power, and the switching is automatic Complies with international and national standards High integrity circuit and stable quality Network Interface U Interface: Line Code: 2B1Q, ITU-T G.961, ETR 080, ANSI T1.601 Data Rate: 160KBPS Startup Link Time: Cold start-3 seconds typical; warm start-110 milli -second typical Termination Resistance: 135 ;distance range: > 5.5 kilometers Switch Compatibility: EURO ISDN DSS1 Connector: RJ45 S/T interface: Line Coding: AMI code, per ITU-T I.430 Termination Resistance: 50 ohm, 100ohm, No termination Bus connection: Point-to-point, short passive bus, extended passive bus Connector: RJ45 Power source: Output voltage at S-interface: 42V