Avaya S8700 Installing Manual page 161

An example of this is where screw-type carbon block protectors—or other
non–plug-compatible types—are in place and it is too costly to reterminate the outside plant
cable on a 5-pin mounting block for only a few out-of-building terminals.
Installing the ITW Linx Enhanced Protector
The ITW Linx Enhanced Protector can be installed in series with existing primary protection.
The ITW Linx Enhanced Protector mounts directly on connecting blocks and requires a
separate ground bar.
Installing the 4C3S-75 Enhanced Protector
The 4C3S-75 protector cannot be installed in series with other types of primary protection. It
must be installed as the only protection on the line entering the building. For the 4C3S-75
protector there are a variety of 25-, 50-, and 100-pair protector panels equipped with 110-type
connecting blocks and/or RJ21X connectors.
Installing the Data Link Protector
The maximum range for out-of-building digital telephones is 3400 feet when using 24 AWG
(#5) (0.5 square millimeters) wire and 2200 feet (670 meters) when using 26 AWG (#4)
(0.4 square millimeters) wire. The range can be extended to 5000 feet (1524 meters) using 24
AWG (#5) wire or 4000 feet (1220 meters) using 26 AWG (#4) wire with the use of a data link
protector. The protector is an isolating transformer used to remove phantom power on the media
gateway side and re-introduce it on the terminal side.
When a protector is used, the telephone must be locally powered by an external power supply or
through the AC power cord provided with some telephones. The protector is installed on the
equipment side of the protection in both buildings.
Refer to ''Example Adjunct Power Connections'' on page 150
Trunk/Auxiliary Field'' on page
Digital Voice Circuit Protectors
Circuit Pack
TN754B all vintages
TN2181 all vintages
TN2224CP all vintages
162.
Enhanced Primary Protector
(With Sneak Current Protection)
4C3S-75 or ITW Linx
4C3S-75 or ITW Linx
4C3S-75 or ITW Linx
October 2002
Installing and Wiring Telephones
and ''Connections at
161