Cabletron Systems CyberSWITCH CSX101 User's Information Manual

About the CyberSWITCH 100 Router12 CyberSWITCH 100 Advanced User InformationISDNISDN provides switched digital access to remote sites. The ISDN BRI standard provides for twohigh speed 64 Kbps bearer (B) channels used for voice or data connections and one 16 Kbpssignaling data (D) channel used for call setup, signaling and other information. ISDN allows alltypes of information to be transmitted including voice, data, fax, and video. Multiple devices canbe linked to a single ISDN connection, each having their own telephone number. Two or morechannels can be combined into a single larger transmission pipe offering variable transmissionspeeds.The CyberSWITCH 100 supports one ISDN BRI line and either or both of the B channels fortransferring data. Voice is transferred using either B channel. If the two B channels are used forseparate connections, each provides up to 64 Kbps transfer rates. Both channels can be usedtogether to provide uncompressed data transfer at up to 128 Kbps. The CyberSWITCH 100 canalso transfer compressed data at up to 512 Kbps (data rate, after decompression).A Network Terminator device (NT1) provides the interface between ISDN terminal (router)equipment and the ISDN service provider. In the U.S., the NT1 is provided by the customer;outside the U.S., the NT1 is provided by the ISDN service provider.Telephone Switch SupportThe following telephone switch types are supported within the U.S.:• National ISDN (NI-1)• AT&T 5ESS w/Custom Software• DMS-100Outside of the U.S. the following switch types are supported:• NET3 (European ISDN)• NET3SW (European Swiss-variant)• NTT (Nippon Telegraph and Telephone)• KDD (Kokusai Denshin Denwa Co., Ltd.)• French Delta (VN4) switches