Polycom (RMX) 1500 User Manual

Chapter 5-Cascading Conferences

Polycom, Inc.

Though the process of cascading conferences mentioned in this section refers to conferences 

running on two different RMX units, it is possible to cascade conferences running between 

RMX units and other MCUs.
The following features are not supported by the cascaded link and therefore are not 

supported in the combined conference:
•

DTMF codes are enabled in cascaded conference, but only in their local conference. The 

operations executed via DTMF codes are not forwarded between linked conferences.

•

FECC (Far End Camera Control will only apply to conferences running in their local 

MCU).

Cascading two conferences requires that the following procedures are implemented:
•

Creating the cascade-enabled Entry Queue
A cascade-enabled Entry Queue must be created in the MCU hosting the destination 

conference (Conference B). The cascade-enabled Entry Queue is used to establish the 

dial-in link between the destination conference and the linked conference and 

bypassing standard Entry Queue, IVR prompt and video slide display.

•

Creating a cascade-enabled Dial-out link
The creation of a cascade-enabled dial-out link (participant) in the linked conference 

(Conference A). This dial-out participant functions as the link between the two 

conferences.

•

(Optional) Enabling the cascaded linked participant to connect to the linked conference 

(Conference A) without entering the conference password. This can be done by 

modifying the default settings of the relevant system flag.

The cascade-enabled Entry Queue maintains the correct behavior of the cascaded link when 
it dials into it.

When cascading High Definition (HD) conferences, the cascade-enabled Entry Queue must 

have the same settings as both cascaded conferences and the participants in both 

conferences must use the same line rate and HD capabilities as set for the conferences and 

Entry Queue.
To Define a Cascade-Enabled Entry Queue:
1

In the RMX Management pane, click the Entry Queues button.
The Entry Queues list pane is displayed.

Click the New Entry Queue  

button.

The New Entry Queue dialog box is displayed.

Define the standard Entry Queue parameters (as described in Chapter 3).

In the Cascade field, select Master or Slave depending on the Master/Slave relationship.
—

Set this field to Master if the Entry Queue is defined on the MCU that is at the 

center of the topology and other conferences dial into it (acting as the Master).

The cascade-enabled Entry Queue should be used only to connect cascaded links and should not 
be used to connect standard participants to conferences.