Specifications

MultiVOIP Gatekeeper Software Guide 6 Parameters Window

Configuration Options

Use Multicast

Select to have the Gatekeeper send an LRQ message over a multicast channel to

resolve an unrecognized alias. Clear to have the Gatekeeper use the Neighbor

Gatekeepers to resolve an unrecognized alias.

Alias Giving

When an endpoint sends an RRQ message, the Gatekeeper uses the additional aliases

that were predefined for the endpoint as online aliases. This enables the Gatekeeper

to assign terminal alias names through which the terminal can be accessed by others.

The following are two examples of how this option can be used:

• Example of Alias Giving for a Terminal

To make a terminal accessible by dialing 100, add the alias 100 to the terminal’s

predefined information, and select the Alias Giving option. When the terminal

sends an RRQ message, the 100 alias becomes a dynamic (online) alias, and all calls

to 100 will be directed to the terminal.

• Example of Alias Giving for Gateways

To make all Gateways supply Service 80, add Service 80 to the Service Table, add

the 80 alias as predefined information to all registered gateways, and select the

Alias Giving option. When the gateways register, they will support Service 80.

DHCP

Select to allow the Gatekeeper to use the terminal ID to identify the terminal. When

Dynamic IP (DHCP) policy governs the network, you do not enter the terminal IP in

the Endpoint window’s Predefined Properties dialog box.

When Dynamic IP (DHCP) policy does not govern the network, you can use DHCP

mode to enable user migration between workstations. When you activate DHCP in a

non-DHCP environment, an H.323 application can register a terminal, and at a later

time, re-register the terminal with a different IP address and the same terminal ID or

phone number. Subsequent calls to the user are routed to the IP address where the

terminal last registered, and calls do not need to be forwarded.

PreGrant All

Select to cause the Gatekeeper to send a pregrantedARQ permission in the RCF

message for each endpoint that wishes to register. The pregranted ARQ permission is

given to both makeCall and answerCall with routed mode. When an endpoint

receives the permission, it may start the call with a Setup message or directly answer

the call with a Connect message.

Delay Call-Proceeding

Select to cause a Q.931 Call Proceeding message to be sent to the originating endpoint

only if a Call Proceeding message is received from the destination endpoint. This

option allows the destination endpoint to request more digits from the origin using

Q.931-based overlapped sending procedures. When the destination wishes to initiate

such a procedure, it needs to reply with a Setup Ack message before sending a Call

Proceeding message or any other Q.931 message.