Filters for Communication Lines ISDN Systems Series/Type: B84312 Date: January 2004 EPCOS AG 2015. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS prior express consent is prohibited. EPCOS AG is a TDK Group Company.Filters for communication lines B84312 ISDN systems For ISDN-Interfaces S , S , U 0 2 P0 and U plus Siemens Hicom installations 2 Stopband attenuation up to 40 GHz Features Use of coaxial feed-through capacitors on input and output Single or current-balanced chokes depending on requirement Insertion loss to CISPR 17 Installation Single filters are attached straight to the shielding wall. Larger numbers can be housed in filter cabinets or boxes. Various models and the matching flexible connector fittings are available. Overview of ISDN systems and suitable filters System Standard Number Transmission Focal Filter Z Filter L of pairs rate frequency band (Ordering code) f width test (5 x f ) test S CCITT, 2 2.048 Mbit/s 1.024 MHz 5.12 MHz 120 B84312C0112E001 2 and/or G.703 PCM 30 S CCITT, 2 144 kbit/s 96 kHz 480 kHz 85... B84312C0110E001 0 ISDN, I.430 160 2B+D ETS300012 U ZVEI 1 304 kbit/s 192 kHz 960 kHz 100 B84312C0114B001 P0 ISDN, (152 kbit/s 2B+D in each direction) U ANSI 1 160 kbit/s 40 kHz 200 kHz 135 B84312C0060B001 2B1Q ISDN, 2B+D T1.601-1988 U FTZ 1 1 160 kbit/s 60 kHz 300 kHz 150 B84312C0060B001 K0 ISDN, TR 220 2B+D U Interface for 1 160 kbit/s 128 kHz 640 kHz 130 B84312C0114B001 200 1B+D Siemens (80 kbit/s Hicom in each direction) 2