Version 6.2 461 February 2011
SIP User's Manual 8. IP Telephony Capabilities
3. Define the Call Waiting indication and Call Waiting Ringback tones in the Call
Progress Tones file. You can define up to four Call Waiting indication tones (refer to
the parameter FirstCallWaitingToneID in SIP Configuration Parameters).
4. To configure the Call Waiting indication tone cadence, modify the following
parameters: NumberOfWaitingIndications, WaitingBeepDuration and
TimeBetweenWaitingIndications.
5. To configure a delay interval before a Call Waiting Indication is played to the currently
busy port, use the parameter TimeBeforeWaitingIndication. This enables the caller to
hang up before disturbing the called party with Call Waiting Indications. Applicable
only to FXS modules.
Both the calling and called sides are supported by FXS interfaces; FXO interfaces support
only the calling side.
To indicate Call Waiting, the device sends a 182 Call Queued response. The device
identifies Call Waiting when a 182 Call Queued response is received.
Note: The Call Waiting feature is applicable only to FXS/FXO interfaces.
8.3.8.7 Message Waiting Indication
The device supports Message Waiting Indication (MWI) according to IETF Internet-Draft
draft-ietf-sipping-mwi-04, including SUBSCRIBE (to MWI server).
Note: For a detailed description on IP voice mail configuration, refer to the IP Voice
Mail CPE Configuration Guide.
For analog interfaces: The FXS device 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 the
Product Reference Manual). 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 device can subscribe to the MWI server per
port (usually used on FXS) or per device (used on FXO).
To configure MWI, use the following parameters:
EnableMWI
MWIServerIP
MWIAnalogLamp
MWIDisplay
StutterToneDuration
EnableMWISubscription
MWIExpirationTime
SubscribeRetryTime
SubscriptionMode
To Next Page
Loading...
