Installing and wiring telephones and trunks
Installing the Avaya S8700 Media Server with an Avaya G650 Media Gateway
217
December 2003
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.
Table 26, Analog line circuit
protectors,
on page 217 shows the recommended protectors.
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.
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.
The 4C3S-75 may be used only with TN754B Digital Line circuit packs.
Table 27, Digital Voice Circuit
Protectors,
on page 218 lists the approved protectors.
Table 26: Analog line circuit protectors
Primary
1
1 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.
Primary
(with heat coil)
Sneak current
protectors
1
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)
