System information

Understand the OpenScape® Video Use Cases
Polycom, Inc. 16
Figure 8: Connecting with VPN
Gateway-Based Interdomain Video
Gateway-based video enables you to connect video-capable endpoints across networks, when endpoints
are registered with different SIP registrars. You can use gateway-based interdomain video in the following
scenarios:
 To establish a video conference between two endpoints registered with different SIP registrars, for
example, a video partner call between an OpenScape product and a Polycom employee.
 To establish a video conference between multiple endpoints registered at different SIP registrars
and an on-site MCU. For example, you want to establish a video conference call between an
OpenScape product and Polycom product. The conference call is hosted on a UNIFY product.
 To establish video between video endpoints registered at different SIP registrars and an off-site
MCU. For example, you want to establish a video conference call between an OpenScape product
and a Polycom product. The conference call is hosted on a Polycom bridge.
 To establish a video conference between multiple parties each registered with a different SIP
registrar. For example, UNIFY employees are registered to OpenScape Voice with UNIFY and
Polycom employees are registered to an OpenScape Video hosted by Polycom.
The following figure illustrates how endpoints registered with different SIP registrars can establish a video
conference.