Polycom 3725-76302-001LI manual DMA Operations Guide MCUs

DMA Operations Guide MCUs

Every conference room (VMR) is associated with an MCU pool order. The pool(s) to which an MCU belongs, and the pool order(s) to which a pool belongs, are used to determine which MCU is used to host a conference. See “MCU Pools” on page 152 and “MCU Pool Orders” on page 156.

Note

If you have a Polycom RealPresence Resource Manager system that uses the DMA system API to schedule conferences on the DMA system’s conferencing resources (MCU pools), you must create MCU pools and pool orders specifically for the use of the RealPresence Resource Manager system. The pool orders should be named in such a way that:

•They appear at the top of the pool order list presented in the RealPresence Resource Manager system.

•Users of that system will understand that they should choose one of those pool orders.

If the RealPresence Resource Manager system is also going to directly schedule conferences on MCUs that it manages, those MCUs should not be part of the conferencing resources (MCU pools) available to the DMA system.

Note

MCU pools and pool orders are not used to select an ISDN gateway for simplified gateway dialing. See “ISDN Gateway Selection Process” on page 147.

When a Polycom RMX MCU is functioning as an ISDN gateway, each call through the gateway consumes two ports, one for the ISDN side and one for the H.323 side. The ports used for gateway calls aren’t available for conferences, so gateway operations may significantly reduce the available conferencing resources.

Note

The Polycom DMA system supports the use of Cisco Codian 4200, 4500, and MSE 8000 series MCUs as part of the Conference Manager’s conferencing resource pool, but their Media Port Reservation feature is not supported. This feature must be set to Disabled on Cisco Codian MCUs in order to use them as part of the Conference Manager’s conferencing resource pool.

The Polycom DMA system supports the use of Polycom MGC MCUs, but not as part of the Conference Manager’s conferencing resource pool. They can register with the Call Server as standalone MCUs and/or ISDN gateways.

Note

In order to efficiently manage multiple calls as quickly as possible, the Polycom DMA system uses multiple connections per MCU. By default, an RMX MCU allows up to 20 connections per user. We recommend not reducing this setting (the MAX_NUMBER_OF_MANAGEMENT_SESSIONS_PER_USER system flag). If you have a DMA supercluster with three Conference Manager clusters and a busy conferencing environment, we recommend increasing this value to 30.

132 Polycom, Inc.