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DEFINITY Enterprise Communication Server Release 9
Getting Started with the Avaya R300 Remote Office Communicator
Issue 1
November 2000
Avaya R300 Installation and Upgrade
35Installing the Avaya R300
3
Off-Premises Circuit Protection
Protection from hazardous voltages and currents is required for all off-premises
(out-of-building) trunks. Both over-voltage (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 350mA, and a minimum voltage
rating of 600V. The following devices protect the system from over-voltages:
■ Analog trunks use the 507B or SCP-110 sneak current protectors. Over-voltage
protection is normally provided by the local telephone company.
■ T1 / E1 / DS1 circuits require isolation from exposed facilities. This insulation
must be provided external to the T1 / E1 / DS1 circuit pack, and be must be
equipment agency-approved for this application. A CSU (T1), LIU (E1), or other
equipment that provides equivalent protection, is assumed.
The DCP voice terminals and analog voice terminals used with the R300 system are
restricted to on-premise use only, and do not require sneak current 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 110-SCP-9 sneak current protectors shall be
used. The panel contains two 25-pair connectors, fuse removal tool, and fifty 220029
Sneak Fuses (and two spares).
NOTE:
The 507B includes 52 sneak fuses and 2 cables and can be ordered using PEC code
63210. The SCP-110 protectors are used with 110-type hardware and on the 507B
Sneak Fuse Panel. The SCP-110 Protectors can be ordered separately and installed
on the 157B connecting block. Fifty protectors are required per block.
Install the 507B near the network interface or MDF with locally-obtained #12 ¾-inch
screws (or equivalent).
Table 6. Sneak Fuse Panel Ordering Information
Description Comcode
157B Connecting Block 403613003
SCP-110 Protector 406948976
507B Sneak Current Fuse Panel 107435091
220029 Sneak Current Fuse 407216316