Polycom MGC Administrator, Administrator'S Manual

Page: 164 / 584

Chapter 3 - Defining Network Services
3-114
Data Flow
In a dial-out conference (Figure 3-1), the MCU dials the number of the
endpoint. This number is transferred via the switch (which is connected to the
ATM network) to the V-Gate. The V-Gate translates the dialed number to the
appropriate UNI address and sends it back to the MCU. The MCU now
connects to the endpoint.
Figure 3-3: Data flow in dial-out conferences
In a dial-in conference (Figure 3-2), the endpoint dials the MCU number. This
number is transferred via the switch (which is connected to the ATM network)
to the V-Gate. The V-Gate translates the dialed number of the MCU to the
appropriate UNI address and sends it back to the endpoint. The endpoint now
connects to the MCU.
Figure 3-4: Data flow in dial-in conferences
ATM
Network
V-Gate
MCU
Dials the number
of the endpoint
Requests the
UNI address
for the dialed
number
Receives the
UNI address
for the dialed
number
Connects the
endpoint
Endpoint
3
4
2
1
ATM
Network
V-Gate
MCU
Connects to
the MCU
Receives the
UNI address
of the MCU
Requests the
UNI address
of the MCU
Dials the
MCU number
Endpoint
3
4
2
1