IMG 1004 - Site Preparation
Ensure that the following requirements are met before beginning installation.
Important: Any variances from the mutually agreed upon site preparation details (such as power cabling, network cabling, equipment room readiness) may affect installation scheduling.
Site Preparation Checklist
Requirements | Completed |
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Location | |
Spacing | |
Mounting | |
Power | |
Electromagnetic Interference | |
Channel Service Units | |
Electrostatic Discharge Protection |
Location
The 120/240 V AC unit does not have to be located in a restricted area. It can be located in a clean and well ventilated office space.
Spacing
There are no spacing requirements.
Mounting
The IMG 1004 can be mounted in a 19-inch rack. The mounting brackets can be mounted at either the front or the rear of the IMG 1004 chassis.
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Power
See IMG 1004 - Connecting AC Power
Electromagnetic Interference
Electromagnetic Interference (EMI) is a type of radiation that can hinder your system. Keep the following in mind when selecting cables:
Sangoma requires that all cabling with the exception of the power cord be shielded. Shielded cable will prevent outside electrical interference and will drain off any induced current.
Twisted wire reduces induction, and thus interference, from one wire to the other. Varying the length of twists reduces the potential for signal interference between pairs.
Twisted pair wiring is available in various thicknesses. Thicker cable covers longer distances and provides better sound quality but it is more expensive.
Channel Service Units
A Channel Service Unit (CSU) connects a digital phone line (T1, E1) from the phone company to a digital communications device. CSUs are required between all telecommunication ports and the network to provide necessary linking capabilities such as:
Line conditioning for long haul transmissions
Remote loopback
Equalization
Regeneration and monitoring of digital signals
Digital circuit testing
Protection from outside lines
Electrostatic Discharge Protection
Electrostatic Discharge Protection (EDP) must always be used. Electrostatic Discharge (ESD) protective straps, shoes, or mats must be used when working with electronic components.
Electrostatic discharge from your body can damage integrated circuits during installation. |