urmet domus IPerCom 3.1.0 System Technical Manual For The Installer page 50

Only one IPerCom system can be installed on the same network infrastructure.
The correct operation and IT security of the TCP-IP networks on which Urmet products are installed
are the full responsibility of those who manage the network infrastructure (consisting of switches,
routers, firewalls, etc.) and cannot be charged either to the products or to Urmet. It is recommended
to use certified personnel specialized in IT network security to properly configure the network
infrastructure.
4.3 Maximum distances and sections cables
To ensure correct operation of IPerCom system, the following installation prescriptions must be respected;
they will be described in this chapter. However, besides this specific information, standard rules for a "good"
installation must be followed, for ensuring a sufficient protection against noise and a good system reliability.
All devices must be correctly installed and wired, according to national installation standards. Pay special
attention to wiring operations and particularly to crimp operations of connectors on CAT5 cable, in order to
ensure a correct and reliable electric connection, that is fundamental for correct operation of the system. In
detail, the following must be respected:
Type of connection
LAN
(*) The max. allowed distance is that defined by IEEE 802.3 standards for Fast Ethernet networks (100
Mb/s), connected with UTP CAT5 cable: according to these standards, the distance between two
Ethernet devices must not be longer than 100 m.
(#) To ensure longest-range door phone operation, the cable must be a class 5e device and the twisted
pairs' cross section must be AWG24.
The maximum resistance of the individual wires must not exceed 10ohm / 100m.
The connection between the door phone and POE switch must be ensured by a single cable without
any extra patch cords.
The cable must be up to the following standards: EIA/TIA 568-B.2 o EIA/TIA 568-C.2,
EN50288 3-1, IEC 61156-5.
In presence of a Gateway IPerCom-2Voice 1083/59 for the maximum distances and cable section of the
2Voice side, follow the instructions in the 2Voice technical manual, section 7 "Gateway Ipercom-2Voice"
(available on website www.urmet.com).
50
Max distance
Table 2: Maximum distance and cable cross section by type of LAN connection
100m (*)
Max distance
CAT5e (#)
MT124-032N