H.323 - Signaling
- Kelli Higdon
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The H.323 signaling object configures the attributes of the H.323 signaling stack and whether a Gatekeeper will be utilized in the network.
Web GUI Page
Dialogic > IMG 2020 > Signaling > New H323
The Signaling  object must first be created before creating the SIP object.
Gatekeeper Support Disabled
GateKeeper Support Enabled
Maximum Objects
One H323 Signaling object per Signaling object.
Related Topics and Dependencies
As displayed above, the H.323 signaling stack can be configured to communicate with an H.323 Gatekeeper or can be configured to communicate with just an H.323 Gateway. When a Gatekeeper is being utilized, the Gatekeeper functionality (Registration, Admission, and Status (RAS) messaging) is enabled through the  Gatekeeper Support field. If the H.323 signaling stack will be configured using an IP address other than the IP address that is configured during the bootup process, the IP Address object must be created first and configured with a Services IP address. The IP address configured as a Services IP address can then be selected as the IP address that will be configured on the H.323 stack.
Field Descriptions
H.323 Id
The H.323 Id field defines the Id to be used by the concerned Network Interface. This Id must be unique to all IMG 2020's registering with the same Gatekeeper. Any subsequent changes should not be made to this field if the Gatekeeper Support field is set to Enable and the IMG 2020 is already registered with a Gatekeeper. To modify the Id, click in the field, highlight the entry, and enter the desired new Id.
H323 Variant
The H323 Variant field identifies the variant being applied. The default variant displayed is ITU (International Telecommunications Union) and cannot be modified.
H323 Version
The H323 Version field identifies the H.323 Version supported on the IMG 2020. The version supported is displayed as H.323 V2 and cannot be modified.
H323 Terminal Type
The H323 Terminal Type field identifies the Terminal Type being employed. The default Terminal Type GW with no MC(Media Controller) is displayed and cannot be modified
Gatekeeper Support
The Gatekeeper Support field is used to either enable or disable the use of a GateKeeper within the network. If the IMG 2020 is communicating with a Gatekeeper for access to a network and will be utilizing one of the Gatekeepers configured under the External Gatekeepers object, the Gatekeeper Support field should be left in the Enabled state. If no Gatekeeper will be utilized, the Gatekeeper Support field should be modified to the Disabled state. Refer to selections below.
Enabled (Default)- Forces the IMG 2020 to communicate with one of the Gatekeepers configured under the External Network Elements object. Once the IMG 2020 has registered with a Gatekeeper, changes to the Gatekeeper related fields (indicated below with an asterisk) will be allowed.
Disabled -  Upon changing this field to Disabled, the IMG 2020 will automatically send a URQ (unregistration request) message to the Gatekeeper.
When registering with a Gatekeeper, the IMG 2020 registers using the H.323 Registration, Admission, and Status (H.323 RAS) protocol. The following fields below marked with the ** symbol are the different formats that can be used to register. To modify each of these fields, the Gatekeeper Support field must first be set to Enable. Once set, the fields below marked with an ** can be modified.
**E.164 Number
When registering with a Gatekeeper, the IMG 2020 registers using the H.323 Registration, Admission, and Status (H.323 RAS) protocol. E.164 Phone Number addressing is one type of RAS addressing that can be utilized. To enter the E.164 number, the Gatekeeper Support field above must be set to Enable. Once this field is set, the E.164 number can be added to the E.164 field. Example: 5085551212
**Gateway URL
When registering with a Gatekeeper, the IMG 2020 registers using the H.323 Registration, Admission, and Status (H.323 RAS) protocol. Gateway URL addressing is one type of RAS addressing that can be utilized. To enter the Gateway URL addressing, the Gatekeeper Support field above must be set to Enable. Once this field is set, the Gateway URL addressing can be added to the Gateway URL field. Example: test.dialogic.com.
**Gateway EMail
When registering with a Gatekeeper, the IMG 2020 registers using the H.323 Registration, Admission, and Status (H.323 RAS) protocol. Gateway EMail addressing is one type of RAS addressing that can be utilized. To enter the Gateway EMail address, the Gatekeeper Support field above must be set to Enable. Once this field is set, the Gateway EMail addressing can be added to the Gateway EMail field. Example: gateway1@dialogic.com.
**Gateway Technology Prefix
When registering with a Gatekeeper, the IMG 2020 registers using the H.323 Registration, Admission, and Status (H.323 RAS) protocol. Gateway Technology Prefix addressing is one type of RAS addressing that can be utilized. To enter the Gateway Technology prefix address, the Gatekeeper Support field above must be set to Enable. Once this field is set, the Gateway Technology prefix addressing can be added to the Gateway Technology prefix field. Example: 1#5085551212, 2#5085551212, 3#5085551212Â
Monitoring
Gatekeeper Connection Status
Once the IMG 2020 discovers a Gatekeeper or registers the name, the Gatekeeper name will be displayed in the Gatekeeper Connection Status field. If no Gatekeepers are discovered then the status will display Not Discovered.
Buttons
The IMG 2020 can Discover and Register with a Gatekeeper manually using the Discover GK, Register with GK, and Unregister with Gatekeeper buttons. The IMG 2020 can also automatically Discover and Register with a Gatekeeper by enabling the Gatekeeper Auto Discovery field in the External Gatekeeper object. To make changes to a Gatekeeper that is currently registered, the IMG 2020 must first be Unregistered from the Gatekeeper, make the changes and then Discover and Register again.