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Polycom RealPresence Collaboration Server (RMX) 1500/2000/4000 Administrator’s Guide
19-8 Polycom, Inc.
Enabling or Disabling Direct IP Dialing
The direct IP dialing is enabled by default. To disable it, manually add the flags
GK_MANDATORY_FOR_CALLS_OUT and GK_MANDATORY_FOR_CALLS_IN to
the System Configuration - MCMS_PARAMETERS dialog box and for each flag enter the
required value (YES or NO).
For more information on flag definition,
see "Modifying System Flags” on page 22-1.
ISDN Participants
Two dialing methods are available to ISDN/PSTN participants:
•Via Gateway IVR
• Direct with automatically generated destination dial strings from dial-in strings. This
dialing method is available from Version 7.1 and is supported on RMX with MPM+ and
MPMx cards.
In addition, PSTN participants can dial the Gateway IVR and can use the MCU or DMA
prefix in the gatekeeper together with the conference ID/endpoint alias as the destination
string to simplify the input. This is one of the methods for PSTN participants to connect to a
virtual Meeting Room on the DMA.
Gateway IVR
In this flow, the calling endpoint enters the dialing string that includes the access number to
the RMX Gateway Profile.
The endpoint connects to the RMX and is welcomed by the IVR Welcome slide and message:
“Please enter the destination number” followed by the dial tone.
Using the endpoint’s DTMF input device such as remote control, the participant enters the
number of the destination endpoint followed by the # key. Only one number can be dialed.
While the system dials to the destination endpoints, the participant hears the dialing rings.
During the connection phase, the number being dialed is displayed on the screen of the
calling endpoint.
If the call is not answered or it cannot be completed using one communication protocol, the
system will try to connect the endpoint using the next communication protocol according to
the selected protocols in the following order: H.323, SIP and ISDN.
PSTN numbers are identified separately and are dialed immediately without trying other
connections.
If the endpoint is busy, the system will not try to connect the endpoint using another
protocol.
YES YES Dial-in call is connected using the Gatekeeper.
Table 19-2 GK_MANDATORY_FOR_CALLS_IN - System Flag (Continued)
Flag Value
Gatekeeper
Available
Results
For flag changes (including deletion) to take effect, reset the RMX. For more information see
"Resetting the RMX” on page 21-69.