Telephone Restrictions For Exposed Environments; Digital Out-Of-Building Telephone Protection - Avaya S8500 Manual

Installing and wiring telephones and trunks
The multi-pair protector units and the off-premises cabling must be locally engineered. Connected multi-
pair protector units (female 25-pair connector) are recommended.
protectors, on page 256 shows the recommended protectors.
Table 32: Analog line circuit protectors
*
Primary
3B1A (carbon)
3B1E-W
(wide gap gas tube)
3C1S
(solid state)
* The 3-type protectors should be used only 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.
For catalogs and ordering information, go to the Avaya Cable Management Systems for Service
Providers Web site (http://connectivity.avaya.com/exchangemax/) and click Products & Solutions.
Telephone restrictions for exposed
environments
Analog telephones connected to TN746B Analog Line circuit packs cannot be installed in an exposed
environment.

Digital Out-of-Building Telephone Protection

Digital out-of-building telephones require protection at both building entrances. The 4C3S-75 Enhanced
Protector and the ITW Linx Enhanced Protector can be used to protect digital telephones and digital line
circuit packs. These units provide primary and sneak current protection. The 4C3S-75 is equipped with a
heat coil for sneak current protection, and the ITW Linx is equipped with replaceable fuses for sneak
current protection.
The 4C3S-75 may be used only with TN754B Digital Line circuit packs.
Protectors, on page 257 lists the approved protectors.
256
Primary
(with heat coil)
4B1C (carbon)
4B1E-W
(wide gap gas tube)
4C1S
(solid state)
NOTE:
The TN2181 16-port, 2-wire digital line circuit pack may not be approved for some out-
of-building uses. Contact your Avaya representative for more information.
Installing the Avaya S8500 Media Server with an Avaya G650 Media Gateway
Table 32, Analog line circuit
Sneak current
*
protectors
220029 Fuse
SCP-1
Table 33, Digital Voice Circuit
December 2003