User's Manual

Page | 84
GXW450X User Manual
Version 1.0.0.6
“From” Header.
For example, "trunk.GXW450X
.provider.com" is the From Domain in
From Header: sip:[e-mail].
Transport
Configure the SIP transport protocol to be used in this trunk. The default
setting is "UDP".
• UDP
• TCP
• TLS
Advanced Settings
Codec Preference
Select audio and video codec for the VoIP trunk. The available codecs
are: PCMU, PCMA, GSM, AAL2-G.726-32, G.726, G.722, G.729, G.723,
OPUS, ILBC, ADPCM, H.264, H.265, H.263, H.263p.
Send PPI Header
If checked, the invite message sent to trunks will contain PPI (P-
Preferred-Identity) Header.
Send PAI Header
If checked, the invite message sent to trunks will contain PAI (P-
Asserted-Identity) Header. It is not
possible to send both PPI and PAI
Headers.
Passthrough PAI Header
If enabled and "Send PAI Header" is disabled, PAI headers will be
preserved as calls pass through the gateway.
DID Mode
Configure where to get the destination ID of an incoming SIP call, from
SIP Request-line or To-header. The default is set to "Request-line".
DTMF Mode
Configure the default DTMF mode when sending DTMF on this trunk.
• Default: The global setting of DTMF mode will be used. The global
setting for DTMF Mode setting is under Web GUIPBX
SettingsSIP SettingsToS.
• RFC2833: Send DTMF using RFC2833.
• Info: Send DTMF using SIP INFO message.
• Inband: Send DTMF using inband audio. This requires 64 bit codec,
i.e., PCMU and PCMA.
• Auto: Send DTMF using RFC2833 if offered. Otherwise, inband.
Enable Heartbeat Detection
If enabled, the GXW450X will regularly send SIP OPTIONS to the device
to check if the device is still online. The default setting is "No".
Heartbeat Frequency
When "Enable Heartbeat Detection" option is set to "Yes", configure the