Install Sneak Current And Off Premise Protection - Avaya S8700 Installing Manual

136 Installing the Avaya™ S8700 Media Server with Avaya™ MCC1 or SCC1 Media Gateway

Install Sneak Current and Off Premise Protection

Protection from hazardous voltages and currents is required for all off-premises (out of
building) trunks, lines, and terminal installations. Protection for incoming analog trunks is
required between the incoming RJ21X or RJ2GX network interface and the media gateway for
both trunk and off-premise circuit packs. Both over-voltage protection (lightning, power
induction, and so forth), and sneak current protection are required.
NOTE:
Sneak current protectors with a rating of 350 mA at 600 volts must be Underwriter's
Laboratory, Inc. (UL) listed for United States installation and Canadian Standards
Association (CSA) certified for Canadian installation.
The following devices protect the media gateway from over-voltages:
Analog trunks use the 507B sneak protector or equivalent. Over-voltage protection is
•
normally provided by the local telephone company.
DS1/E1/T1 circuits require isolation from exposed facilities. This isolation may be
•
provided by a CSU (T1), LIU (E1), or other equipment that provides equivalent
protection
Analog telephones use 146 Series Line Protectors combined over-voltage and sneak
•
current protection, or equivalent: See PEC 8310-0xx; SAP Code 10512x.
DCP and ISDN-BRI terminals use a low voltage version of the 146 Series Line
•
Protectors.
DS1/E1/T1 circuits require isolation from exposed facilities. This isolation may be
•
provided by a CSU (T1), LIU (E1), or other equipment that provides equivalent
protection
The Model 507B sneak current fuse panel, or equivalent, is recommended for sneak current
protection for analog trunks. The panel contains two 25-pair connectors, one fuse removal tool,
and 50, 220029 sneak fuses (and two spares). Each column of sneak fuse panels requires
approximately 8 inches (20 cm) of horizontal wall space.
See ''Model 507B sneak fuse panel'' on page
Information'' on page 137
137. See
for ordering information.
May 2003
''Sneak Fuse Panel Ordering