Contents - Page 29
Grounding
Provision is made for both protective ground (earthing) and functional ground
(earthing) of IP Office analogue trunk modules. In addition, where the installation
of telephone and/or other standard (tip/ring) devices in another building is
required, In-Range-Out-Of-Building (IROB) protectors must be fitted (see page
30).
Protective Ground
A protective ground
must be permanently
fitted to IP400 Analogue Trunk 16
modules (see page 42). Connection of this protective ground requires the use of
suitable tools and
must be
connected at
both ends
before connection is made to
the telecommunications network.
To connect the protective ground:
1. Attached one end of a #14 AWG (minimum) solid insulated cable (sleeve
must be
green/yellow) to the Protective Ground Point as shown below.
Ensure that the Ground Post securing screw is fully tightened.
Protective Ground Point
(M4 pan head screw with shakeproof washer)
EXPANSION
PF2
PF1
Analog Trunk 16 Module
(Rear view)
2. Connect, using a fastening that satisfies local regulations, the other end of the
wire to the approved protective ground.
Functional Ground
To ensure proper operation of the IP Office equipment, functional grounding is
required:
Caution:
This functional ground is
not
a protective ground – see above for
protective
grounding.
On some models of the units/expansion modules, there may not be a specific M4
functional ground point. In which case use either the Trunk module kit fixing screw
or the top cover centre fixing screw as shown below:
Use this M3 grounding screw, with int.
teeth washer, when M4 is not fitted
Functional Ground Point
M4 pan head screw with shakeproof washer
Slot B
ANALOG TRUNK
1 2 3 4
IP406
or
IP412
Expansion
Modules
Use centre cover fixing screw,
when M4 is not fitted
To connect the functional ground:
1. Attached one end of a #14 AWG (minimum) solid insulated cable (sleeve
must
not be
green/yellow) to the grounding screw and fully tightened.
2. Connect, using a fastening that satisfies local regulations, the other end of the
wire to the approved ground, such as building steel or an earthed metal cold
water pipe.
Installation Manual INDeX Media Gateway
Contents - Page 29
38DHB0002UKGA Issue 1 (12/05/2004)