Aastra OpenCom 510 User Manual page 47

Interfaces and Connectible Terminals
5.2.3 Internal S
Up to eight ISDN terminals per bus can be connected to the internal S
means of four-wire cables. Three of these terminals can be supplied with power
from the bus; any additional terminals will require their own power supply. The
internal S buses can be used for point-to-multipoint connections in accordance
0
with the DSS1 protocol (Euro ISDN).
ISDN terminals can be connected to internal S
cable. For the pin assignment of crossed ISDN cables, refer to the illustration Wiring
for direct connection on page 44. If the terminal did not come with a suitable ISDN
cable, contact your dealer or Aastra DeTeWe distributor.
The length of an internal S
has a power feed of approx. 3 W. The feed voltage is
5.3 U Ports
pn
5.3.1 Terminals Connected to U
U ports can be used to connect one of the following system terminal types:
pn
■
RFP 22 DECT base station
■
OpenPhone 71, OpenPhone 73 or OpenPhone 75 system telephone
■
OpenPhone 61, OpenPhone 63 or OpenPhone 65 system telephone
The (corded) OpenPhone 63 and OpenPhone 65 system telephones can be
cascaded by means of a U
Phones to one U
pn
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.
Ports
0
bus cable must not exceed 150 m. Each internal S
0
adapter, which enables you to connect two Open-
pn
port. For further information, refer to the "OpenPhone 61, 63,
ports by means of a crossed ISDN
0
42 V.
–
Ports
pn
U Ports
pn
ports by
0
bus
0
45