The ISDN TA (Integrated Service Digital Network Terminal Adapter) is a communication product for the Internet and digital communication era. It provides high speed and high quality transmission. The TA supports two analogs and one digital port. The two analog ports act like two regular telephone lines, which can be connected to regular telephone, answering machine, fax and modem products. Also, the TA can provide flexible functions like: supplementary service, call screening, speed dial and global call function to meet user’s requirements.

The digital port with the RS232 link can be connected to PC to support data communication with remote site. It supports many protocol selection such as V.110, V.120, X.75, X.25 on D channel, PPP (Point-toPoint Protocol), MLPPP (Multi-Link PPP), BACP (Bandwidth Allocation Control Protocol) / BOD (Bandwidth On Demand) function. With the MLPPP, the entire 128k ISDN bandwidth can be used to access the Internet. The BOD function can utilize dynamic bandwidth demand under MLPPP connection. Under MLPPP data connection, the TA will automatically release one B channel for voice communication when the user picks up the phone to make a call and returns to two B channels for MLPPP when the phone hangs up. With the BACP function, the 128k capacity of ISDN can be utilized fully. The TA is equipped with channel bundling feature which allows the user to use both B channels to maximize the 128k bandwidth for data transmission. The TA complies with ITU-T Q.921, Q.931 for D channel protocol, and provides switching type selections for different countries. Following are the switch types supported by the TA: *Euro-ISDN EDSS1 The TA is equipped with flash EPROM for easy future software upgrade through RS232 port.

Download D-Link DMI-128ESU+ ISDN Terminal Adapter (TA) Users Manual