Allow
<number>
Concurrent
Call(s)
Select
Call Admission Control
and enter a number for allowed
concurrent calls.
Enable ENUM Resolution
Select to use ENUM resolution, or leave it as blank.
Clear Bindings Prior
Registration
If failed to the registration and cannot identify any abnormal settings,
select to un-register before registering again.
Disable NAT Traversal
IP PBX uses NAT traversal for outgoing traffics by default. Select to
disable NAT traversal if media ports in SDP are trusted.
Anti-SIP Blocking
Select to ignore illegitimately inserted CANCEL messages from ISP.
Gateway Trunk
Select to (1) trust the peer if IP matches and (2) retain caller ID.
Call Keep Alive
Select to check if the call is still ongoing in a certain time.
Registered Keep Alive
Select to check the registration status in a certain time.
Delay Before/After
Answering
Delay in seconds before and after answering a call from SIP trunk.
RFC2833 Payload Type
The default payload type is 101. Enter a value between 96 and 127 to
change the default payload type when selecting DTMF mode as
RFC
2833
or
Auto
.
WAN LBR Preference
Select a low bit rate codec to be used as the first priority for outbound
calls. e.g. select
Auto
to use caller’s low bit rate codec, if any, or G.729
as the first priority.
)
To use WAN LBR Preference on a SIP trunk, the WAN Bandwidth
Saver function must be enabled.
6.7 Analog PSTN Trunk configuration
An Analog PSTN trunk group is a logical group of one or more FXO or FXS PSTN subscriber lines
connecting to FXO or FXS ports on IP PBX.
The
Analog PSTN Trunk Management
page allows the administrator to configure PSTN trunks.
Select
Trunk
->
Analog PSTN Trunk
, and one can add, edit and delete PSTN trunks. Go to
Service
->
IP PBX Service
, and click
Reload
to activate changes.
6.7.1
Add an Analog PSTN Trunk
1. Click
the
Add New
tab.
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