User`s manual

MediaPack
SIP User's Manual 218 Document #: LTRT-65408
8.1.6 Message Waiting Indication
Support for Message Waiting Indication (MWI) according to IETF <draft-ietf-sipping-mwi-
04.txt>, including SUBSCRIBE (to MWI server). MediaPack/FXS gateways can accept an
MWI NOTIFY message that indicates waiting messages or that the MWI is cleared. Users
are informed of these messages by a stutter dial tone. The stutter and confirmation tones
are defined in the CPT file (refer to Section 15.1 on page 325). If the MWI display is
configured, the number of waiting messages is also displayed. If the MWI lamp is
configured, the phone’s lamp (on a phone that is equipped with an MWI lamp) is lit. The
gateway can subscribe to the MWI server per port (usually used on FXS) or per gateway
(used on FXO).
To configure MWI set the following parameters:
 EnableMWI
 MWIServerIP
 MWIAnalogLamp
 MWIDisplay
 StutterToneDuration
 EnableMWISubscription
 MWIExpirationTime
 SubscribeRetryTime
 SubscriptionMode
 CallerIDType (determines the standard for detection of MWI signals)
 ETSIVMWITypeOneStandard
 BellcoreVMWITypeOneStandard
8.2 Configuring the DTMF Transport Types
You can control the way DTMF digits are transported over the IP network to the remote
endpoint. The following five modes are supported:
1. Using INFO message according to the Nortel IETF draft:
In this mode DTMF digits are carried to the remote side within INFO messages.
To enable this mode set:
• ‘RxDTMFOption = 0’ (Protocol Management > Protocol Definition > DTMF &
Dialing > 'Declare RFC 2833 in SDP' = 'No')
• ‘TxDTMFOption = 1’ (1
st
to 5
th
DTMF Option = INFO (Nortel))
Note that in this mode DTMF digits are erased from the audio stream
(DTMFTransportType is automatically set to 0 (DTMF Mute)).
2. Using INFO message according to Cisco’s mode:
In this mode DTMF digits are carried to the remote side within INFO messages.
To enable this mode set:
• ‘RxDTMFOption = 0’ (Declare RFC 2833 in SDP = No)
• ‘TxDTMFOption = 3’ (1
st
to 5
th
DTMF Option = INFO (Cisco))
Note that in this mode DTMF digits are erased from the audio stream
(DTMFTransportType is automatically set to 0 (DTMF Mute)).