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Interfaces and Terminals as of I7.8
20
System Interfaces
sy
d-
023
9/2.
4
– I7.
8
– 0
7
.2009
2. 1. 2. 3
Direct Dialling Out (DDO)
If a fax server is connected to an S bus, individual fax receivers allocated a DDI
number can be specifically addressed. In terms of routing technology, this corre-
sponding to a DDO (Direct Dialling Out) function.
The fax server forwards the incoming faxes via e-mail to the relevant PC stations
that are set up as fax receivers.
Fig. 10
Direct Dialling Out (DDO) to a fax server
Due to the configuration of the S interface as
EXTERNALS
and the use of the DSS1
protocol, the fax calls can be routed via routes and trunk groups. This means that all
fax receivers that have been allocated a DDI number can be reached via a single S
interface
See also:
"Call to DSS1 Terminal Equipment on the S Bus (DDO)" Chapter in the
"System Functions and Features" System Manual
DDI
S
75
76
77
S external
Fax receiver
with allocated
DDI numbers
Fax server
haz0772aaena0
ISDN
PBX