CHAPTER5 Cabling the Device
Mediant 1000 Gateway & E-SBC | Hardware Installation Manual
5 Cabling the Device
This section describes how to cable the device.
Earth Grounding and Power Surge Protection
Connecting the device to earth ground is required.
Protective Earthing
The equipment is classified as Class I EN 662368-1 and UL 62368-1 and must be
earthed at all times (using an equipment-earthing conductor).
● Finland: "Laite on liltettava suojamaadoituskoskettimilla varustettuun
pistorasiaan."
● Norway: "Apparatet rna tilkoples jordet stikkontakt."
● Sweden: "Apparaten skall anslutas till jordat uttag."
Grounding and Power Surge Protection
● The device must be installed only in telecommunication sites / centers in
compliance with ETS 300-253 requirements "Earthing and Bonding of
Telecommunication Equipment in Telecommunication Centers".
● Prior to installation, earth loop impedance test must be performed by a certified
electrician to ensure grounding suitability at the power outlet intended to feed the
unit. It is essential that the impedance will be kept below 0.5 ohms!
● Proper grounding is crucial to ensure the effectiveness of the lightning protection,
connect the device permanently to ground (as described in the procedure below).
The device's grounding screw must be connected to the equipotential grounding
bus bar located in the Telecommunication rack or installation site, using a wire of
6 mm
2
surface wire. If the device is installed in a rack with other equipment, the
rack must be connected to the equipotential grounding bus bar of the
Telecommunication room, using a stranded cable with surface area of 25 mm
2
.
The length of this cable must be as short as possible (no longer than 3 meters).
● The device does not include primary telecom protection! When the FXO and FXS
telephone lines are routed outside the building, additional protection using a
350V three-electrode Gas Discharge Tube (GDT) must be provided at the entry
point of the telecom wires into the building (usually on the main distribution frame
/ MDF), in conjunction with proper grounding. The center pin of the GDT (MDF
grounding bar) must be connected to the equipotential grounding bus bar of the
Telecommunication room.
● Failing to install primary surge protectors and failing to comply with the grounding
instructions or any other installation instructions, may cause permanent damage
to the device!
● As most of the installation is the responsibility of the customer, AudioCodes can
assume responsibility for damage only if the customer can establish that the
device does not comply with the standards specified above (and the device is
within the hardware warranty period).
● The device complies with protection levels as required by EN 55024 / EN
300386. Higher levels of surges may cause damage to the device.
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