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

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.

If mounting multiple IMG 1004's in a rack, ensure that a hazardous condition does not exist due to uneven mechanical loading. Avoid mounting inside a cabinet with closed doors unless you can provide sufficient ventilation inside the cabinet. Elevated operating ambient conditions may occur in an enclosed equipment rack. The operating ambient temperature may be greater than the room temperature. Do not block the front of the chassis. Doing so can cause the unit to overheat.

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.