Matrix PRASAR UCS - Video Call

Matrix PRASAR UCS System Manual 1187
Video Call
What's this?
Video calling has become an increasingly important tool in today’s business world. It offers people the power of
face-to-face communication, at reasonable cost without incurring the expense of traveling. PRASAR UCS allows
you to make and receive video calls by connecting video capable user terminals.
Among the various UC features offered by PRASAR UCS, Video calling is the most important.
Video Calling over SIP Trunks and SIP Extensions
PRASAR UCS supports video calling for SIP to SIP calls. PRASAR UCS only acts as a relay agent to place video
calls between two video capable user terminals with no additional supplementary features.
Video capable user terminals which are communicating through PRASAR UCS must confirm to the same type of
video codecs
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as per industry standards. If video codec negotiation is not successful between the end-to-end
video terminals, either the call will be converted into an audio call or the call will be dropped.
For enhanced video quality during the call, some of the advanced video attributes including profile/level (H.263+,
MPEG4, H.264), bandwidth, standard annexes, framerate, image size must be confirmed between the
communicating video terminals. PRASAR UCS will not modify or alter any of these attributes which can effect the
characteristics of the video stream during communication.
For a video call, two VOCODER channels
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of PRASAR UCS are consumed. During the entire video call, those
VOCODER channels are reserved and used till either of the parties disconnects the call.
Since PRASAR UCS support a maximum of 256 VOCODER channels. A maximum of 50 simultaneous video calls
are supported.
You can convert a normal SIP to SIP audio call into a video call only if both the SIP extensions support video
calling.
• Video calling is supported in VARTA UC Clients.
• None of the proprietary Extended SIP Phones of Matrix support video calling.
• SRTP is not supported for video calling.
Feature Interactions
When the below mentioned features are accessed during an ongoing Video call, the call will be established into an
Audio call:
• Features where-in the system establishes a conference such as 3-Party Conference, Multiparty
Conference, Conversation Recording, Call Taping, Raid etc.
• When users access Barge-In or Forced Answer.
• When users unhold, unpark or Blind Transfer the call.
• When system answers the call on a trunk, such as DID, DISA, Callback on Trunk etc.
136. Current industry standard video codecs include H.261, H.263, H.263p, H.264, MPEG4 etc. For more details, refer the documenta-
tion of the corresponding video terminals you are using for video calling.
137. The Channels will be reserved only for Transcoding Mode.