Off-Premises Circuit Protection; Install Sneak Fuse Panels - Avaya DEFINITY ONE Installation And Upgrades

Installation and Upgrades for DEFINITY ONE and
IP600 Internet Protocol Release 10 555-233-109
1 Install and Cable the Cabinet
Install equipment room hardware for Avaya IP600

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 600V, 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
— 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
Figure 1-20 on page
December 2001
1-47.
Issue 6
1-46