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Configuration
DTMF Options the DTMF Options combo box is used to select a type of DTMF digits payload.
The available options include:
1. RFC2833 for all terminal equipment types
2. INFO V.1 for CISCO SIP terminals
3. INFO V.2 for Nortel SIP terminals
Dealing with H.323 Options:
Tunneling enables/disables encapsulation of H.245 messages
Fast Start enables/disables FastStart
Multiple FastStart. With Multiple FastStart set to ‘true’ the system includes FastStart in every
packet
Ext T.38 compatibility
This parameter is intended to overcome slight incompatibilities that frequently exist in vendor-
specific implementations of the H.323 standard. For example, setting Ext T.38 compatibility to
true ensures trouble-free interoperation of Vocaltec endpoints with the DVX-7090 Router.
Start H.245 has three options:
- callproceeding
- connect
- alerting
that help you define which of the above H.225 messages will trigger establishment of the
H.245 control channel
Early Connect – this flag is used to ensure smooth interoperation with endpoints that do not
exchange capabilities (codecs etc.) until the arrival of CONNECT. Select true to provide for an
early CONNECT message.
Dealing with SIP Options:
Ringback Tone is used to configure the RBT capability for the endpoint. If the terminal you are
configuring is capable of generating RBT, select local, otherwise select emulate.
Allow SIP Redirect allows/disallows SIP redirection
Allow noproxy when set to true enables signaling proxy only and direct flow of media streams.
The value false enables full proxy, which involves proxy operation for both signaling and media
packets.
Note: Remember that the setting of the parameter Allow noproxy must be the same for both
the calling and the called endpoint
4.2.4 CALL FORWARD DIALOG
Fig. 17 Call forward configuration form
To configure conditional and unconditional call forwarding:
DVX-7090 VoIP Router page 20 of 83