Aastra OpenCom 510 - Technical Information

Interfaces and Connectible Terminals U
pn
Ports
45
The (corded) OpenPhone 63 and OpenPhone 65 system telephones can be
cascaded by means of a U
pn
adapter, which enables you to connect two Open-
Phones to one U
pn
port. For further information, refer to the “OpenPhone 61, 63,
65” user guide.
The RFP 22 DECT base station can be used to connect the OpenPhone 26 and
OpenPhone 27 DECT handsets. The OpenPhone 27 has an USB interface for data
transmissions and Internet access. Note that handsets such as the OpenPhone 26
can also be used in conjunction with base stations operating with the GAP/CAP
standard.
Note on the MS+UPN2-8 Interface Card
U
pn
interfaces can only be used to connect DECT base stations if the MS+UPN2-8
has been installed in the master system; if this card is in the slave system, it is not
possible to connect any DECT base stations to the card’s U
pn
interfaces.
Note on the MS+UPN1-8 Interface Card
The U
pn
interfaces of the
MS+UPN1-8 interface card cannot be used to connect DECT base stations.
5.3.2 Technical Information
The U
pn
ports have been implemented as RJ45 sockets.
Each of the devices listed above can be connected to the U
pn
interface by means
of a two-wire 1:1 cable. System terminals come with a suitable cable for con-
nection to the RJ45 socket of the interface.
A two-wire cable connected to a U
pn
port can be up to 1000 m long, provided it is
a 0.6 mm twisted-pair cable.
Each U
pn
port has a power feed of approx. 2.1 W. The short-circuit-proof feed
voltage is
–42 V.