2nd-dialing might fail. To avoid such problem, it is
recommended to set the same DTMF mode for all IP
extensions and SIP trunks in the IPBX, as well as for
all IP phones registered to the IPBX. If it is not
feasible to set the same DTMF mode for some IP
extensions or SIP trunks, and inline transfer or
2nd-dialing is necessary for those IP extensions or
SIP trunks, the Fast Bridging feature can be disabled
on a per IP extension and per SIP trunk basis. Note
that Fast Bridging is enabled by default.
3.2.4.2 Add Analog PSTN Trunks
1.
Enter settings shown in
.
2. Click
ADD
to see the newly added analog PSTN trunk in the table in the webpage.
For deleting an analog PSTN trunk, select a trunk identifier and click
DEL
.
Click
Next
to assign trunks to usergroups.
Table 3-9 Add Analog PSTN Trunk Settings
Field Description
Trunk Group
ID number of this PSTN trunk group. A valid number ranges
from 1 to 31. It should not overlap with existing ISDN PSTN
trunk groups.
Trunk Type
Select the port type, FXO or FXS. If selecting FXS, users
can see
By Number
and
By Privilege
in the
DID of
Extension
list, and be able to configure
DID Prefix
and
DID
Stripping
.
Trunk Ports
Select one or more FXO or FXS ports for this Analog PSTN
trunk.
Description
Arbitrary description information.
Port Selection
Click to search for an available port in the group.
Rotating
means to force ports being selected in turns to even cost.
DID Type
DID means direct inward dialing (also called DDI in Europe).
Select a preferred type,
None DID
,
Extension DID
, and
DID
by Privilege
from the list and then enter configuration in
DID
Prefix
and
DID Stripping
to have the incoming calls
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