Tadiran Telecom Coral IPx Office, Руководство по установке и аппаратным средствам, Страница: 149 / 510

Coral IPx Office Installation Manual External Connections
5-11
External Equipment
5
Generally, trunk circuits are connected to the Coral IPx Office system simply by
connecting the trunk interface circuit of a Coral IPx Office trunk card to the point of
demarcation where the trunk circuits from the Telephone utility Company (TELCO)
appear. For more specific data regarding all trunk types supported by the
Coral IPx Office systems, refer to
Peripheral Card Description, page 10-5 . Refer also to
the Coral Service and Peripheral Cards Installation Manual.
Protective devices are regularly provided by the TELCO on circuits originating
outside the building. Determine whether the TELCO protective devices meet the
specifications provided in
Protection Devices, page 5-13 , and if necessary, install
secondary protector devices that meet these specifications. To be effective, the
protective devices, whether TELCO or customer provided, must be grounded to the
same ground point as the IPx Office system.
Figure 5-4 illustrates typical trunk circuit
wiring from building entrance to the Coral IPx Office system.
Figure 5-4 Typical
Trunk Circuit Wiring
Diagram
...................................................................................................
2 Trunk Circuits
IPx Office System
I/O RJ-45
Connector
RJ-21X or Similar
Interface
Bridging
Clips
Earth
Ground
Ground Bus
Ground
Terminal
Lig
htn
ing &
Su
rge
Pro
tect
or
TE
LC
O
De
m
ar
ca
tio
n
(Netwo
rk
In
te
rfa
ce
)
TELCO Circuit
Feed
Blo
ck
CO
R
A
L
I/
O B
lo
ck