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LifeSize Gateway User Guide
About Dialing In to the IP Network via the Gateway
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 LifeSize 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 LifeSize 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 LifeSize 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 LifeSize Gateway uses to transfer
a call from one IP network endpoint to another. The LifeSize
Gateway supports call transfer for incoming calls from the ISDN
network to an IP network endpoint whether you are using a
LifeSize gatekeeper or a third-party gatekeeper. The LifeSize
Gateway internal IVR can handle up to 30 simultaneous incoming
calls.
With the LifeSize Gateway, you can define an endpoint on the IP
network as an IVR operator (see
page 70 for 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 LifeSize 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.
Table 4-1
Routing Methods
Routing Method
Explanation
Summary of Contents for Gateway-PRI
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Page 26: ...18 LifeSize Gateway User Guide About LifeSize Gateway Functionality...
Page 146: ...138 LifeSize Gateway User Guide Importing Configuration Files...
Page 168: ...160 LifeSize Gateway User Guide Using the Hyperterminal Configuration Commands...
Page 178: ...170 LifeSize Gateway User Guide Using Express Setup...
Page 182: ...174 LifeSize Gateway User Guide Upgrading Software...
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