AudioCodes Mediant 1000B - Figure 5-10: RJ-11 Connector Pinouts for FXO; Outdoor FXO Cabling

Mediant 1000B Gateway & E-SBC
Hardware Installation Manual 48 Document #: LTRT-41441
5.3.2.2 Outdoor FXO Cabling
The following procedure describes how to cable FXO ports for outdoor routing.
Warnings:
• 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 unit permanently to ground as per the illustration in this section.
• The device accommodates only secondary surge protection. Where the FXO lines
are routed outside the building, it is essential to install additional three-electrode
Gas Discharge Tube (GDT) rated 350V as a primary protection on the MDF,
located at the entrance point of telephone wiring to the building. The center pin of
the GDT must be connected to ground as per the illustration in this section.
• 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 unit.
Cabling specifications:

Cable: Straight-through RJ-11-to-RJ-11 telephone cable; 26-AWG minimum wire

Connector: RJ-11

Connector Pinouts:
Figure 5-10: RJ-11 Connector Pinouts for FXO
 To connect FXO interfaces for outdoor routing:
1. Ground the device as described in Section 5.1 on page 39 and shown in Figure 5-11.
2. Connect one end of a straight-through RJ-11 cable to the RJ-11 port on the FXO
module.
3. Connect the other end of the cable to your MDF.