TANDBERG CODIAN 2200 用户手册

 

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The IP VCR contains a built-in gatekeeper with which devices can register multiple IDs. IDs can be numbers, H.323 IDs 
(e.g. Fredsendpoint) or prefixes. 

Up to 25 devices can be registered without a feature key. Feature keys can be purchased to increase this number. 

: The IP VCR can register with its own built-in gatekeeper. The IP VCR then counts as one registered device. See 

To start the gatekeeper, go to 

 and select the H.323 gatekeeper check box to open a port for the 

gatekeeper. (On the IP VCR, ports are not open by default for security reasons.) Then go to 

, select Enabled 

in the Status field and click 

. If you attempt to enable the built-in gatekeeper without opening the port, an 

error message is displayed. 

You can optionally configure the built-in gatekeeper with up to two neighboring gatekeepers. This means that if the built-
in gatekeeper receives a request (known as an Admission Request or ARQ) to resolve an ID to an IP address and that ID is 
not currently registered with it then it will forward that request to its neighbor gatekeeper(s), as a Location Request 
(LRQ). The built-in gatekeeper will then use the information received from the neighbor(s) to reply to the original 
request.  

You can also configure the behavior of the built-in gatekeeper on receipt of LRQs from another gatekeeper. It can:  

• 

send LRQs regarding unknown IDs to its neighbor(s) 

• 

reply to LRQs from other gatekeepers 

• 

accept LCFs (Locations Confirms) from non-neighboring gatekeepers  

Refer to this table for assistance when configuring the built-in gatekeeper:  

Enables or disables the built-in 
gatekeeper.  

To use the built-in gatekeeper, you must enable it 
here.  

Enter the IP address(es), or hostname(s) 
(or <host>:<port number> to specify a 
port number on the neighboring 
gatekeeper), of the neighboring 
gatekeeper(s). 

These are the gatekeepers to which the built-in 
gatekeeper will send an LRQ if it has received an 
ARQ to resolve an ID which it does not currently 
have registered. The built-in gatekeeper will then 
use the information received from the neighbor(s) 
to reply to the original request.  

Configures the built-in gatekeeper to 
reply to LRQs from other gatekeepers. 

These requests can come from any gatekeeper 
which has the IP VCR's built-in gatekeeper 
configured as one of its neighbors.  

Configures the built-in gatekeeper to 

Unless you have selected to Accept LRQs, you cannot