ISDN Star

Product description By using the ISDN Star 1/4, it is possible to integrate the ISDN-S0-Bus into a physical star topology such as Twisted Pair Ethernet. This offers the user significant cost savings, particularly in the case of small networks, since only one cable system is required. The ISDN Star 1/4 is connected directly via patch cable or IDC block to the NTBA (Network Termination Basic Access). 100 Ω terminators are already installed in the star point of the device. The ISDN Star 1/4 is equipped with four ports for connecting either via IDCs, wiring cables and outlets, or by using patch cables and patch panels. Cat. 5e outlets can be used for telephone wall sockets. There is no need to fit these with terminators. The length of cable per bus is 100 m - including the wiring to the NTBA. This conforms to the maximum cable length permitted in a universal structured cabling system. If Cat. 5 cable is used, the total length of all the bus wiring must not exceed 400 m; when using category 3 cable a maximum of 300 m is permitted. In total, up to 12 wall outlets and maximum 8 terminals may be connected. The ISDN Star 1/4 is available either in a smart plastic housing as a desktop device, or in a metal panel type housing size 3 HU/8 PU for 19" rack-mount. Performance Characteristics star partitioning of an S0-Bus into 4 channels connection to the NTBA via unshielded RJ45-jack or via LSA Plus IDC block connection to the terminals via unshielded RJ45 jacks or LSA-Plus IDC blocks cable length between NTBA and terminal up to 100 m each maximum total bus cabling maximum 400 m using Cat.5 cable (or better) plastic housing; colour light grey (RAL 7035), for use as a desktop device, for mounting to wall or in cable ducts 19" rack-mount design size 3 HU/8 PU with anodized front plate 19" rack-mount design size 1 HU, light grey RAL 7035

Mini-Distibutor 1x 1/4