User`s guide

MBR W40 – Admin’s Manual
38
or office from disguising a Wi-Fi SIP phone as one of your
office extensions and making free phone calls at your
expense.
When this option is selected, the screen refreshes, providing
user name and password fields.
By default, the W40 does not require extension
authentication.
Authentication User Name
The user name used for SIP device authentication. Note that
this user name must first be configured on the SIP device.
Authentication Password
The password used for SIP device authentication. Note that
this password must first be configured on the SIP device.
Optimize RTP Path Using re-
INVITE
Select this option if you would like the W40 to attempt to
enable the telephony LAN device and the SIP proxy to
exchange Real Time Protocol (RTP) traffic (the audio stream)
directly, which is more efficient. Note that in order for this
feature to work, it must also be enabled for the VoIP line
through which the call is routed.
3.7.2.2 External Lines
The W40 telephony service is based on VoIP (Voice over Internet Protocol or Voice over IP). In order to establish
external voice calls VoIP line must be configured additionally to the cellular line configuration. The basic VoIP
parameters can be configured during the installation wizard process. Additional parameters can be configured in
Services  Voice  External Lines -> Edit VoIP Line. Before configuring the VoIP related parameters, make
sure the Cellular Line Parameters are configured.
 To configure the external line:
Navigate to Services  Voice  External Lines (or Home  External Lines). The External Lines screen
appears:
Figure 44: External Lines Screen
When an active SIM card is installed in the unit and there is an adequate cellular network coverage (if not, an
external antenna can be connected), Internet connection and VoIP line are configured, W40 can create external
line voice calls.