Sockets & Ntp's; Cable Requirements - Avaya INDeX 30 Installation & Maintenance

Page 8 - Cabling & Trunking Requirements
Sockets & NTP's

Cable Requirements

Page 8 - Preparing for Installation
INDeX 30
INDeX 20 Series Terminal Sockets :
Each INDeX 20 Series terminal requires a slave jack (LJU 2/3A) socket connected
to the MDF by a single twisted-pair cable. Connect to socket terminals 3 & 4.
Two-Wire Extension Sockets :
All two-wire terminal devices connected to the INDeX 30 require a master jack (LJU
2/1A) socket fitted with gas discharge tubes for additional protection. The socket
connects to the INDeX 30 MDF by a single twisted-pair cable. Connect to socket
terminals 2 & 5.
Network Termination Points : (NTP)
This equipment is provided and installed by the PSTN provider. It remains their
equipment and no actions should be carried out on the line connection side. INDeX
30 is usually connected to the NTP points.
Unless otherwise stated, all devices connect to the MDF using standard telephone
cable (type CW1308). This can be a single or multiple pair cable. All cables should
run through cable ducting or protective trunking.
General Cable Specification :
– Type : CW1308 (0.5mm diameter copper wire). CAT5 cabling can also be used
– Wire Insulation : PVC Type 2 insulation to BS6746.
– Cable Sheathing : PVC Type TM1 sheathed to BS6746.
– Resistance : 84Ω/Km maximum at 20°C.
– Capacitance Unbalance : Between any conductor and all other conductors
connected to earth this is limited to 500pf maximum.
Preparing for Installation
Installation & Maintenance
38DHB0002UKDF- Issue 4 (07/2001)