NL1901ACV Enhanced Hybrid 4G LTE Gateway – User Guide
UG01063 v. 1.0 December 2018
Enable T38 Redundancy
Support
Select this function if you wish to send or receive faxes via
VoIP and have a
fax machine capable of using the T38 fax over
VoIP protocol.
Enable VBD redundancy
support
Select this checkbox to use the feature.
Enables the Voice Activity Detection function of the gateway.
When enabled, no data is transmitted during periods of
silence or low volume, reducing the data usage.
Select this checkbox to use the feature.
Select this checkbox to use the feature.
Select this checkbox to use the feature.
Registration Expire
Timeout
Enter the registration expire timeout.
The interval of dialog refreshing time.
The minimum interval of dialog refreshing time.
Set the VoIP dial plan. If user-dialled number matches it, the
number is processed by the VoIP gateway immediately.
Set the DSCP QoS tagging for Session Initiation Protocol. You
can select it from the drop-down list.
Set the DSCP QoS tagging for Real-time Transport Protocol.
You can select it from the drop-down list.
Enter the RFC2198 payload value, the valid range is 96 ~ 127.
Set DTMF transmit method, which can be one of the
following:
– Use SIP INFO message to transmit DTMF digits.
– Use RTP packet to encapsulate DTMF events, as
specified in RFC 2833.
– DTMF events are mixed with user voice in RTP
packet.
Caller ID send Delay Time
Set the delay time in milliseconds between 500 to 15000ms.
Select the Caller ID Message Type for your area:
,
or
Select your preferred Frequency-shift keying (FSK) mode:
,
or
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