RADVision SCOPIA 400 User Manual page 172

About Dialing In to the IP Network via the Gateway
162 SCOPIA 400/1000 Gateway User Guide
Table 4-1 Routing Methods (continued)
Routing Method Explanation
TCS4 TCS4 is a special routing method for incoming H.320 video calls.
TCS4 allows direct inward dialing to an endpoint on the IP
network through the Gateway when DID is not available. H.323
endpoints on the IP network register with the gatekeeper using
extension numbers. When an ISDN terminal dials one of the
Gateway phone numbers followed by a TCS4 extension, the call
is routed directly to the corresponding IP endpoint registered with
that extension.
IVR IVR (Interactive Voice Response) is a widely deployed automated
call answering system that responds with a voice menu allowing
you to make choices for routing the call. The Gateway can
operate with its own internal IVR or an external IVR located in
another device.
When an incoming call activates the IVR system, it initiates an
interactive session with the caller. The caller directs the call to its
destination endpoint by responding with the dialer to prompts
from the IVR system. If the caller appropriately enters the
destination endpoint phone number, the IVR connects the caller
to the requested IP network endpoint. Otherwise, the call can be
forwarded to an operator. The IVR call transfer is enabled by a
proprietary mechanism that the Gateway uses to transfer a call
from one IP network endpoint to another. The Gateway supports
call transfer for incoming calls from the ISDN network to an IP
network endpoint whether you are using the RADVISION
gatekeeper or a third-party gatekeeper. The Gateway internal IVR
can handle up to 30 simultaneous incoming calls.
With the Gateway, you can define an endpoint on the IP network
as an IVR operator (see
more information). This provides an alternative if the requested
destination endpoint is not available.
Default Extension Any endpoint on the IP network can be defined as a default
destination for calls using the default extension number
(including the Gateway prefix plus the H.320 or PSTN phone
number) that is registered with the gatekeeper. All calls not routed
through one of the above incoming call routing methods are
forwarded to this endpoint.
Configuring IVR Settings on page 92 for