Nortel VoIP Gateway, Configuration Manual

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30 Configuring the Protocol Definition parameters
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Configure the Protocol Definition parameters according to the following table.
Table 4 Protocol Definition parameters
Parameter Description
General
Connection Mode Select Fast Start if you want the VoIP Gateway to use the Fast Start connection mode.
Select Normal if you want the VoIP Gateway to use the Normal connection mode.
The default value is Fast Start.
The Fast Start connection mode allows a media path to be established using H.225,
without having to start the full H.245 protocol session. In some situations, you need to use
fast start in order to control call progress tones.
Enable Annex D/T.38 Fax
relay Select No to disable Annex D/T.38 Fax relay.
Select Yes to enable Annex D/T.38 Fax relay.
When you enable this feature, the VoIP Gateway can send and receive Fax messages
using the H.323 Annex D T.38 procedure.
Enable DTMF over H.245 Select Yes to enable DTMF over H.245.
When you enable this feature, the VoIP Gateway sends out of band DTMF signaling using
H.245. Out of band signaling is recommended for use with H.323 protocol and the Norstar
KSU.
H.323-ID Enter the VoIP Gateway H.323-ID you want to use for registration to the Gatekeeper.
You can enter a string up to 19 characters long.
When you are using a Gatekeeper, the VoIP Gateway will send a registration message to
the Gatekeeper with this H323-ID string.
Source Number
Encoding Type Select the source number encoding type. This defines the encoding type of the calling
phone number in H.225 setup messages.
You can select E.164, H.323-ID, E.164 & H.323-ID, TableValues or TableValues &
H.323-ID.
Select TableValues if you want the VoIP Gateway to use the values configured in the
Tel -> IP Source Number Manipulation table.
Select H323-ID if you want the VoIP Gateway to add the H323-ID to the source
information.
Select E.164 if you want the VoIP Gateway to use E.164 source encoding and not use the
encoding type defined in the table.
The default value is E.164.
Note: If you select an option that includes “H.323-ID”, you must enter a string in the
H.323-ID box.
Destination Number
Encoding Type Select the destination number encoding type. This defines the encoding type of the called
phone number in H.225 setup messages.
You can select E.164, H.323-ID, E.164 and H.323-ID, or TableValues.
Select TableValues if you want the VoIP Gateway to use the values configured in the
Tel -> IP Dest Number manipulation table.
Select H.323-ID if you want the VoIP Gateway to add the H323-ID to the destination
information.
Select E.164 if you want the VoIP Gateway to use E.164 destination encoding and not use
the encoding type defined in the table.
The default value is E.164.
Note: If you select an option that includes “H.323-ID”, you must enter a string in the
H.323-ID box.