Version 5.8 373 October 2009
SIP User's Manual 6. Configuration Parameters Reference
6.8.4 Message Waiting Indication Parameters
The message waiting indication (MWI) parameters are described in the table below.
Table 6-33: MWI Parameters
Parameter Description
Web: Enable MWI
EMS: MWI Enable
[EnableMWI]
Enables Message Waiting Indication (MWI).
 [0] Disable = Disabled (default).
 [1] Enable = MWI service is enabled.
Notes:
 This parameter is applicable only to FXS interfaces.
 The device supports only the receipt of SIP MWI NOTIFY
messages (the device doesn't generate these messages).
 For detailed information on MWI, refer to ''Message Waiting
Indication'' on page 521.
Web/EMS: MWI Analog Lamp
[MWIAnalogLamp]
Enables visual display of MWI.
 [0] Disable = Disable (default).
 [1] Enable = Enables visual Message Waiting Indication by
supplying line voltage of approximately 100 VDC to activate
the phone's lamp.
Note: This parameter is applicable only for FXS interfaces.
Web/EMS: MWI Display
[MWIDisplay]
Determines whether MWI information is sent to the phone
display.
 [0] Disable = MWI information isn't sent to display (default).
 [1] Enable = The device generates an MWI message
(determined by the parameter CallerIDType), which is
displayed on the MWI display.
Note: This parameter is applicable only to FXS interfaces.
Web: Subscribe to MWI
EMS: Enable MWI Subscription
[EnableMWISubscription]
Enables subscription to an MWI server.
 [0] No = Disables MWI subscription (default).
 [1] Yes = Enables subscription to MWI (to MWIServerIP
address).
Note: Use the parameter SubscriptionMode (described in
''Configuring Proxy and Registration Parameters'' on page 147)
to determin
e whether the device subscribes per endpoint or
per the entire device.
Web: MWI Server IP Address
EMS: MWI Server IP
[MWIServerIP]
MWI server's IP address. If provided, the device subscribes to
this IP address.
The MWI server address can be configured as a numerical IP
address or as a domain name. If not configured, the Proxy IP
address is used instead.