VoIP gateway IP400 version 5.01
Page 55
• Select the desired dial tone in the
Dialtone type
field.
•
Called party
and
calling party number
do not usually have to be modified
in any special way in this configuration. Refer here to section 5.2.7 “Dealing
with the various ISDN address types” from page 62.
5.2.3 Use as a public exchange line for an ISDN-PBX
In this case, the gateway interface is connected to an ISDN-PBX as the sole
exchange line or as an additional line within an exchange line bundle. In this way,
it operates like a “
point-to-point
” connection from your network provider.
The interface must be operated in NT mode here. Consequently, the only inter-
faces suitable for this type of use are
tel1
and
tel2
.
Fig. 12 Gateway as a public exchange line
Tip
With this type of usage, two telephones or other ISDN-terminals can be con-
nected directly to each of the ISDN -interfaces
tel1
and
tel2
, that is a maxi-
mum total of four devices on an IP 400. If an ISDN bus is connected to
tel1
or
tel2
, up to eight terminals can be connected to each bus. If the terminals
concerned draw their power from the ISDN network, the total current con-
sumption of all connected devices must not exceed 4 watts.
ISDN
PBX
BRI
Public exchange
connection
tel1 or tel2
Gateway