Call Flows - Polycom RMX 1500 Administrator's Manual

Chapter 17-Gateway Calls

Call Flows

IP Participants
17-2
• Forwarding of DTMF codes from the Gateway Session to a conference
running on another gateway, MCU or DMA. This enables the
participant to enter the required conference and/or chairperson
password when connecting to another conference.
DTMF forwarding is enabled when there are only two participants
connected to the Gateway Session.
• Up to 80 gateway calls (same as conferences) may be run on a fully
configured RMX 1500/2000/4000.
• Gateway Profiles are included in the Backup and Restore Configuration
operations.
• CDR files are generated for Gateway Sessions in the same way as for
conferences.
• Cascading. To support cascading, the gateway indicates a lower
number than the MCU for master-slave relation (directly or through
DMA).
• Gateway calls are supported in Microsoft and Avaya environments.
Call flow changes according to the connection protocols: IP or ISDN. This
section describes the call flows between two endpoints connect via one
gateway. For call flows describing connections between two endpoints via
two gateways, or a connection of an endpoint to a conference running on
MCU via a gateway, see "Basic Cascading using ISDN Cascaded Link" on
page 3-7.
Two calling methods are available:
• Direct - the dialing string includes the destination number/
conference ID and the call is routed directly to the destination
endpoint/conference. This is the recommended method.
• Via Gateway IVR - the call connects to the gateway, where through
interaction with the IVR, the destination number is entered using
DTMF codes.