Off-Premises Circuit Protection; Install Sneak Fuse Panels - Avaya S8700 Manual

80
Installing the S8700 IP Connect

Off-premises Circuit Protection

Protection from hazardous voltages and currents is required for all off-premises (out of
building) trunks, lines, and terminal installations. Both over-voltage protection (lightning,
power induction, and so forth) and sneak current protection are required. Sneak current
protectors must be either UL listed/CSA certified, or must comply with local safety standards.
Sneak current protectors must have a maximum rating of 350 mA and a minimum voltage rating
of 600 V, or as required by local regulations. The following devices protect the system from
over-voltages:
Analog trunks use the 507B sneak protector or equivalent. Over-voltage protection is
•
normally provided by the local telephone company.
Analog voice terminals use one of the following types of combined over-voltage and
•
sneak current protection, or equivalent:
DCP and ISDN-BRI terminals use the solid state 4C3S-75 with heat coil protector, or
•
equivalent.
• DS1/T1 circuits require isolation from exposed facilities. This isolation may be provided
by a channel service unit (CSU) (T1), or other equipment that provides equivalent
protection.

Install Sneak Fuse Panels

Sneak current protection is required between the incoming RJ21X or RJ2GX network interface
and the system for both trunk and off-premises circuit packs. The model 507B sneak current
fuse panel, or equivalent, is recommended for sneak current protection. See
sneak fuse panel'' on page
— Carbon block with heat coil for UL code 4B1C
— Gas tube with heat coil for UL code 4B1E-W
— Solid state with heat coil for UL code 4C1S
81.
May 2002
''Model 507B