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When communicating with an external H.323 Gateway, there are various attributes/features that need to be associated with that particular gateway. Between the H.323 Signaling object and the H.323 Profile object described in this topic, a user can configure these attributes/features. Once configured, the H323 Profile can be added to the H323 Signaling and the External H.323 Gateways object. The H323 Profiles configured will be selectable from a drop down menu in each of the objects described above. In addition to the fields in the H323 Profile object, an additional object labeled the H.323 Profile Timers object. Refer to the information below.
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When creating the H323 Profile object, the first H323 profile created is a Default profile and the individual fields within this object cannot be modified. To create an H323 Profile that can be modified, right click on the H323 Profiles object again and select New H323 Profile. The second SIP Profile object created can now be modified.
Field Descriptions
Name
Enter a unique name that identifies the H.323 Profile being created. The default name is set to H323_Profile_1. For a list of valid characters that can be used refer to Valid Characters topic.
H.245 Tunneling
In order to conserve resources and to reduce call setup time, the H.245 messages can be embedded within the Q.931 call signaling channel, instead of establishing a separate H.245 channel. The process known as encapsulation or tunneling is the encapsulation of H.245 messages within H.225/Q.931 messages (H.245 Tunneling). When employing a NAT or firewall, the use of H.245 tunneling will reduce the number of TCP ports needed to setup the call. The default value is to have H.245 Tunneling enabled.
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