EN 28877:1993

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Information technology - Telecommunications and information exchange between systems - Interface connector and contact assignments for ISDN Basic Access Interface located at reference points S and T (ISO/IEC 8877:1992)Informationstechnik - Telekommunikation und Informationsaustauch zwischen Systemen - Steckverbinder und Kontaktbelegung für die ISDN-Basisanschluß-Schnittstelle an den Bezugspunkte S und T (ISO/IEC 8877:1992)Technologies de l'information - Télécommunications et échange d'informations entre systemes - Connecteur d'interface et affectation des contacts pour l'interface d'acces de base au RNRNIS située aux points de référence S et T (ISO/IEC 8877:1992)Information technology - Telecommunications and information exchange between systems - Interface connector and contact assignments for ISDN Basic Access Interface located at reference points S and T (ISO/IEC 8877:1992)35.100.10Physical layer31.220.10Plug-and-socket devices. ConnectorsICS:Ta slovenski standard je istoveten z:EN 28877:1993SIST EN 28877:1997en01-december-1997SIST EN 28877:1997SLOVENSKI
STANDARD



SIST EN 28877:1997



SIST EN 28877:1997



SIST EN 28877:1997



SIST EN 28877:1997



SIST EN 28877:1997



SIST EN 28877:1997



SIST EN 28877:1997



SIST EN 28877:1997



ISO/IEC 8877:1992(E) NOTE - This Portion of the plug illustrates a structure necessary for securing the cordage and is not pertinent to proper mating with the jack. Figure 1 - Plug - 8 pole \ \ Figure 2 - Jack - 8 pole SIST EN 28877:1997



ISO/IEC 8877:1992(E) z u: 2 c L CP n C .- 8 -t E .- - i! ‘9; E .- - z E c .- : .- c E .- n * 4 'U!~(6~0'0) ‘IZ’L a1ou aq1 aas ; ‘XWJ (150’0) ZE’L r I I l 1 --m--L I I - I 0 7 KOL'O)L9 z ( ELL’O) L8'Z I I i L, 1 l/ / 1 - .- w - E L .- E g = m s e c; ;t z m s- ’ * Cu‘ - a 7 . 55 I 2 .---- g: I r‘ 7 1 1-1 4 I 1 J -- F3;, RN 4m 00: $20 -. - l -P. l %c 19 drrr‘ da 5 SIST EN 28877:1997



ISO/IEC 8877:1992(E) 1 - NOTES . z E - 7 z e z Ln’ 1 Dimensions in millimetres (inches in parentheses) See note 2 0,5(0.0195) 0103 (0.001) u A . . 7 The 24O min. angle applies only to plugs with front plastic Walls higher than 4,83 mm (0.790 in). 2 Jack contacts may be rectangular with a width of 0,5O (0.079 5) max. and 0,36 (0.014) min. - Jack contact (0.011) min (0.024) Figure 4 - Plug/jack contact specification SIST EN 28877:1997



ISO/IEC 8877:1992(E) Cu -4-d f” m 0) Y = 0 a m a -- II 2- -s & *$ ü= Q, .- tiL$ QL w2 Ul c .- .- l (L’E’O) 99’8 / ('IL2'0196'9 ‘U!uJ (ISO-01 8O'Z Ir I 'XeuJ (6+10'0)'7Z4 Yd-- * Ni m a =r Aö $ c 3 c? .- . 0 *g ; Q! +1 .- - -m E E-Eo .- U- 0 yj ,r 5 +I crogr .- EEL$ z z .m;T Co m m - -4 ao-J’ t--t3 MN i / 4-m 66 E s N - 6 0 0 z 0 Nu 0 I ri 6 I SIST EN 28877:1997



ISO/IEC 8877:1992(E) Annex A (informative) Interface cabling arrangements! The interface cabling arrangements, implied by the requirements in CCITT Recommendation 1.430, section 4 are described in this annex. Figure A.l illustrates the cabling arrangements, for the ISDN basic access interface, and Shows the different Parts of the physical interconnection: “connecting Cords”, “extension Cords” and “interface ca bles”. The same contact numbers assigned at the interface (Point IA in CCITT Recommendation 1.430, figure 2/1.430) of TEs for TRANSMIT and RECEIVE conductor pairs are assigned at the interface (Point IB in CCITT Recommendation 1.430, figure 211.430) of NTs for RECEIVE and TRANSMIT , respectively, conductor pairs. This provides for a given conductor to be connected to the same contact in jacks at both ends of interface cables. However, it means that interface cables are suitable for NT-to-TE and NTi-to-NT2s interconnections only. For TE-to-TE interconnections, an adapter with a crossover to connect TRANSMIT to RECEIVE is required. Similar Statements apply to contactslconductors (pairs assigned to contact numbers 1-2 and 7-8) used for optional power transfer. As indicated in Recom mendation 1.430, part (jack) at both ends . This means that section 4, interface ca bles are termi nated in the same type of con NTs or TEs may be connect .ed at eith er end of ’ Point-to-Point cables. nector Extension Cords have a plug at one end and a jack at the other end. They cannot be used to extend TE connecting Cords in connections to Passive Bus wiring configurations because the bridging impedance of an extension Cord (of even a short length) tan adversely affect Operation (including that of other TEs) in Passive Bus configurations. The length of the extension Cord(s) associated with a TE in Point-to-Point configurations is limited to 25 m. Connecting Cords provide a plug for connection to an interface cable (or extension Cord). The acceptable maximum length of such Cords will generally be limited by the need for compliance with transmit and receive-circuit impedance requirements specified in CCITT Recommendation 1.430, section 8. While there is no restriction on the minimum length required to include a Cord of at least 5 m in length . of such Cords in a particular a pplicati on , TEs are lt is also significant that, in most ISDN applications, the interface cable will be user’s premises wiring and the jack must be available in a form suitable for wall mounting. Available assemblies of the specified jack, which are intended for such mounting, may provide a housing for a suitable mounting of the transmit and receive pair terminating resistors. As specified in CCITT Recommendation 1.430, figure Ul.430, the terminating resistors must be located, for Point-to-Point wiring configurations, in or at the jack and must be connected across contact pairs 4-5 and 3-6. For passive bus w
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