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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.
Send
This function has to work with digitmap. Select no RFC3325 ID
header, P-Preferred-Identity or P-Asserted-Identity. When P-
asserted-Identity/P-Preferred-Identity is enabled with the
specified digitmap, this digitmap manipulates internal calling
number into an expected P-Asserted-Identity. E.g. internal
extensions could be 19xx but you want their P-Asserted-Identity
showing 07000019xx.
NAT Traversal Mode
Select Default to use the global settings of IP PBX. Select
Enable/Disable to overwrite IP PBX global settings and
enable/disable NAT traversal for outgoing traffic. Users are
suggested to disable NAT if media ports in SDP are trusted.
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.
6.1.10Analog PSTN Trunk
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
, and click
Reload
to activate changes.
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