Avaya S8100 사용자 설명서

Install off-premises station wiring

An analog out-of-building (500-, 2500-, or 7100-series) telephone connected to an Analog Line circuit 
pack should be near enough that its maximum loop resistance does not exceed 1300 Ohms.

The following voice terminals cannot be installed in an exposed environment:

7300-series voice terminals connected to TN762 Hybrid Line circuit packs

Multibutton Electronic Telephone (MET) sets connected to TN735 MET Line circuit packs

Analog telephones connected to TN746 Analog Line circuit packs

 on page 63 for circuit protector ordering 

information (comcodes).

Use the following equipment to protect digital out-of-building voice terminals and Digital Line circuit 
packs at both building entrances:

4C3S-75 Enhanced Protector

ITW Linx Enhanced Protector

These units provide primary and sneak-current protection. The 4C3S-75 is equipped with a heat coil for 
sneak-current protection while the ITW Linx is equipped with replaceable fuses for sneak-current 
protection.

Use the 4C3S-75 only with Vintage 14 or newer TN754 circuit packs. The 4C3S-75 can be used on any 
vintage of the TN754B circuit pack. The ITW Linx may be used on any vintage of the TN754 circuit 
pack. 

 on page 126 lists the approved protectors.

The TN2181 (2-wire 16-port Digital Line circuit pack) may not be approved for some out-
of-building uses. Contact your Avaya representative for more information.

1 The 3-type protectors should only be used if they are already part of the existing protection system. A sneak-

current protector is always required when a 3-type primary protector is used.

3B1A (carbon)

4B1C (carbon)

220029 Fuse

3B1E-W (wide-gap gas tube)

4B1E-W (wide-gap gas tube)

SCP-1

3C1S (solid state)

4C1S (solid state)