INFORMACION E IMPLEMENTACION DE INFRAESTRUCTURA

                                [pic 2]

INFORMACION E IMPLEMENTACION DE INFRAESTRUCTURA

ESTANDARES DE INSTALACION

Consideraciones de Cableado

Información e Implementación de Infraestructura                                 Marzo 05

Avantel Publicación Técnica

Vasconcelos 130 Ote. Col. Santa Engracia

Nuevo Leon, México

AVANTEL CONFIDENCIAL

PREFACIO

El documento Consideraciones de Cableados en sitios de Avantel, es una guía técnica con referencias visuales con la descripción de procedimientos paso a paso que permitirán la realización de un trabajo más eficiente.

HISTORIAL

CONTENIDO

Pág.

SECCION 1

Carácteristicas de los Cables Coaxial 734 y 735………..……………………     4

        1.0. Physical Requirements …………………………………………….      4

        1.2. Longitudes Permitidas 734 y 735 75 Ohm Cable Coaxial …….     5

SECCION 2

Armado Conectores BNC y Microsiemens………………..……………………    6

SECCION 3

Configuracion para cableados con RJ45   ………………..……………………    9

3.1. Configuración Ethernet UTP Categoría 5e, Cable Cruzado y Uno a Uno  ……………………………………………………………………………….      9

        3.2    Pinout del RJ45 con respecto al DSX para E1 …………..……    10

SECCION 1

Caracteristicas de los Cables Coaxial 734 y 735.

Del Doc. 734 and 735 75 Ohm Coaxial Cable. MCI 048 170 3301

1. PHYSICAL REQUIREMENTS 

1. 1 Center Conductor For 734 cable the center conductor shall be #20 AWG solid circular, annealed copper silver or tin plated. Overall conductor diameter shall not exceed 0.0345 inch. For 735 cable the center conductor shall be #26 AWG solid circular, annealed copper silver plated wire. Overall conductor diameter shall not exceed 0.020 inch.

1. 2 Dielectric The dielectric shall be an insulating grade of stabilized low or high density foamed polyethylene or polypropylene to control flexibility. The dielectric shall be constructed of 100% virgin oaxial as defined by ASTM D-883 and shall contain an antioxidant system that includes a copper inhibitor.

1. 3 Shield The shield shall consist of an inner and outer segment.

1. 3.1 Inner (Foil) Shield The inner shield shall be constructed of aluminum-polyester-aluminumtape, aluminum thickness of 0.001 inches or greater, applied longitudinally over the core, aluminum side out, to provide 100% coverage. The inner shield shall be bonded to the dielectric to simplify connector installation.

1. 3.2 Outer (Braid) Shield The outer shield shall be a 6-end, tinned, copper weave. Weave shall be constructed of #34 AWG wire, providing a minimum of 80% coverage for 734 cable and #36 AWG or smaller (0.005 inches or smaller) wire providing not less than 90% coverage when tested in accordance with TA-TSY-000139. The braid shall not be bonded to the foil.

1. 4 Cable Jacket The jacket of both individual oaxial cables and multi-coaxial bundled cables shall be constructed of polyvinyl chloride (PVC). The jacket shall be durable and flexible, able to withstand exposure to sunlight, atmospheric temperature, and stresses expected during normal installations and service. The jacket thickness shall be 0.025 inches to 0.030 inches for 734 and 0.012 inches to 0.016 inches for 735 cable.

1. 4.2 Flammability The cable shall be classified CMR in accordance with UL 444.

1. 4.3 Static Coefficient of Friction Static Coefficient of Friction for the jacket shall be between 0.75 and 1.8 tested in accordance with TA-TSY-00139.

1. 4.4 Jacket Marking The outer jacket of any finished coaxial cable or multi-coaxial bundled cable, shall be marked longitudinally with the following information:
2. 
   1. cable manufacturer/supplier
   2. part number
   3. date of manufacture (day, month, and year)
   4. UL flame test classification
   5. gage size of conductors (AWG units)
   6. running footage number
   
7. The outer jacket of each individual coaxial cable in a multi-coaxial bundled cable shall be marked longitudinally with the following information:
   1. cable manufacturer/supplier
   2. date of manufacture (day, month, and year)
   3. conductor identifier

1.2. Longitudes Permitidas 734 y 735 75 Ohm Cable Coaxial 

E1 level/Sync

For E1 transmission and Sync, 24 AWG multipair, 735 coax and 734 coax can be used within the following limits:

E3 (34 Mbps) and DS-3 (45 Mbps level)

For these levels it's recommended to use 734 coaxial cable as a rule. The mini-coaxial 735 cable shall only be used by exception in very short distance cases, within the following limits:

...