Cisco ISDN GW 3241 Manual de usuario descargar pdf (Pagina 27)

Different video conferencing scenarios

Video conferencing with a gatekeeper

All Codian units can use a gatekeeper. A unit registers with the gatekeeper, then when the unit calls out it

queries the gatekeeper to find out where to connect to.

IP VCR recording a point-to-point call

If you use a gatekeeper, the IP VCR can be used to record both ends of a point-to-point call between two

endpoints. This is initiated from one of the endpoints, and cannot be done via the IP VCR’s Call out and

record function.

Figure 14: IP VCR with a point-to-point call

On the IP VCR you register a prefix for point-to-point calls, say 11, and the endpoint registers its number,

say 222. To call point-to-point another endpoint calls the registered endpoint by dialing 11222. This is

directed to the IP VCR, which knows to call out to 222 and record the call.

The IP VCR records both endpoints' media streams - unlike the earlier scenario in which only one endpoint

was recorded.

MCU or IP VCR with a gatekeeper and two or more endpoints

A gatekeeper also makes it easier for participants to join conferences or watch and make recordings on an IP

VCR because they can dial using directory numbers rather than having to know the IP address or host name

of the unit. For example a participant can call a specific gatekeeper ID that is configured to trigger

recording. Equally an existing recording can be registered on a gatekeeper and it can be played back

subsequently by calling its registered gatekeeper ID.

endpoint

IP network

IP VCR

H.323

Gatekeeper

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Cisco ISDN GW 3241 Manual de usuario Pagina 27