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This is a summary of the gatekeeper registration behavior on the IP VCR. It also explains how you can use a gatekeeper
for load balancing.
Choice of registered IDs
With the exception of point-to-point prefixes (which are explained below), gatekeeper usage starts with configuring
unique Numeric IDs for individual stored recordings and for folders. For each folder you can configure an Auto attendant ID,
Recording ID and Recording console ID (together called folders IDs in this topic).
After configuring these IDs you can then:
• choose on a per-recording basis whether to register that recording's numeric ID individually with the gatekeeper
using the Numeric ID registration field
• choose on a per-device basis whether to register folders' auto attendant, recording and recording console IDs
individually with the gatekeeper using the Register folder IDs field
• for all recording and folder IDs, choose whether to add a specified prefix to those IDs when registering them
individually with the gatekeeper using the Prefix for IP VCR registrations field with use as prefix for registrations
selected.
• choose not to register recording or folder IDs individually with the gatekeeper but instead make them all
available through one or more registered prefixes using the Prefix for IP VCR registrations field with register as a
service prefix selected and the Play back prefix field. (With a prefix registered, then typically a gatekeeper will send
all calls which start with the prefix to the device which registered the prefix)
You may need to use a prefix if:
• you want more than 100 IDs (recording or folder IDs) to be available through the gatekeeper. (The IP VCR has a
limit of 100 individual dial strings that it is able to register with its configured gatekeeper)
• the number of IDs that you want to be available via the gatekeeper is less than 100 but more than the gatekeeper
that you are using can support
• you want to load balance recording or play back functionality across multiple IP VCRs which register the same
prefix(es). In this case you should configure these IP VCRs so that they deregister those prefixes when all
recording ports are in use. See Load balancing below.
You may not be able to use a prefix if: your gatekeeper does not support prefixes - not all gatekeepers offer this
functionality.
Matching incoming called numbers
A call can reach the IP VCR with a called ID number when:
• a user dials a number that the IP VCR has specifically registered with the gatekeeper
• a user dials a number that starts with a prefix that the IP VCR has registered with the gatekeeper
• a H.323 call is made directly to the IP VCR as a gateway and a subsidiary number is supplied.
When the IP VCR receives an incoming call involving a called ID, it decides what to do with the incoming call by
following a number of rules in a specific order. If any of these rules provides a decision on what to do with the call, the
process stops at that point and no further rules are tested. The rules in order are: