System information

Understanding OpenScape Video Use Cases
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• To establish a video conference between multiple parties each registered with a different SIP
registrar. For example, Siemens Enterprise Communications employees are registered to
OpenScape Voice with Siemens Enterprise Communications 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.
Figure 4-3: Endpoints Registered with different SIP Registrars
This figure illustrates a typical gateway video call. The video conference can be initiated at endpoint A in
a private domain, for example,
siemens-enterprise.com, or at endpoint B in a partner company
domain, for example,
polycom.com.
The incoming call from B to A in the private domain is established by dialing in the format
[e-mail], for example, [e-mail]. The
outgoing call from A to B is established by dialing the gateway number, for example, 99 plus the domain
name of the called partner,
99 13131. After receiving the number, the gateway deletes 99 from the
string and adds
@polycom.com. The called party is addressed by [e-mail].