Forum Gateway 560 Modules
125
the clock. If no external trunk line is connected, the master gateway generates
the reference clock.
Forum 550 Card 8 S0/T0
Field of application
The Forum 550 Card 8 S0/T0 interface card provides eight 8 S
0
interfaces
which can be used for either external connections, i.e. to connect the
Forum Gateway 560 to a digital network (PSTN, Public Switch Telephony
Network), or internal connections, i.e. to operate digital terminals (ISDN
telephones, ISDN fax machines etc.) with the Forum 5004/5008/5012
communications system.
The Forum 550 Card 8 S0/T0 interface card can be installed in any of the
slots (1 to 12) of a Forum Gateway 560 (see
Technical information
●
The Forum 550 Card 8 S0/T0 interface card can – when operating
multiple Forum Gateways 560 – be operated on any Forum Gateway 560.
The interface card should be installed in the Forum Gateway 560 that will
handle most TDM connections.
●
DIP switches S1 to S16 can be used to activate a 100-ohm terminal
resistor (default: on).
For further information, refer to
●
The power failure circuit can be activated by means of DIP switches S17 to
S20 (default: off). If activated, the system will connect the first S
0
interface with the eighth S
0
interface in the event of a power failure;
provided the system has been configured accordingly, external calls can be
made using an emergency telephone.
For further information, refer to
●
All eight S
0
interfaces can be configured either as subscriber (internal)
interfaces or as trunk (external) interfaces.
For further information, refer to
●
Forum Gateways 560The Forum 550 Card 8 S0/T0 interface card runs
on software acquired from the system. After the card has been installed it
will automatically load the required software.
