Polycom EDOC2501b ユーザーズマニュアル

Using the RealPresence Desktop or the RealPresence Mobile applications, the participant 

can initiate a point-to-point call by:
•

Selecting a participant from the Contacts list (LDAP access from the provisioning server 

or a manually entered contact)

•

Selecting a participant from the Recent Calls list

•

Typing the IP address of the calling participant

When the RealPresence Desktop is provisioned using the RealPresence Resource Manager, 

the Contacts list is comprised of the LDAP directory and contacts that have been manually 

added. When selecting a participant from the Contacts list, the call is started when the called 

participant answers the call. 
The RealPresence® Access Director™, the Polycom secure firewall solution, enables high-

quality and secure unified communications with remote enterprise users and guest users in 

the enterprise. In this solution, the RealPresence Access Director system, acting as the 

Session Border Controller (SBC) for the enterprise IP network, secures the borders to the 

enterprise IP network, the private VPN, and the Internet. This allows for secure 

communication between the enterprise environment and enterprise remote users.
The RealPresence Access Director enables external, remote users via designated video 

endpoints such as smartphones and tablets, to make an LDAP connection to the 

RealPresence Access Director system which are then proxied to the internal LDAP server.
The RealPresence Virtualization Manager (DMA) establishes point-to-point conferences 

within the enterprise network and is used as the SIP proxy server between the conference 

participants. 
Point-to-point calls uses the RealPresence Virtualization Manager (DMA) for call control. 

When the point-to-point video call is sent to an endpoint outside the enterprise firewall, SIP 

signaling and media are sent through the RealPresence Access Director.

The video layout for point-to-point calls contain both participants in the layout view. The 

smaller pane displays the local participant (self-view).
The following table illustrates how participants are displayed in the video layout of a point-

to-point call: