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Using data
50
The ISDN Gateway will pass a content channel without configuration, however if you experience
network problems you can fine tune the H.239 codecs allowed. See the online help topic
“Configuring general ISDN settings”
Per conference for scheduled conferences (MCU only) in the Conference configuration page (or Add
conference page if this is a new conference). Select
Enabled for the H.239 content channel video
field to allow the conference to use a content channel. Then set the
H.239 contribution from
endpoints
field appropriately depending on whether you want to allow video endpoints to contribute
the content channel or only the MCU (for example to send the desktop display from a VNC endpoint).
See the online help topic “Adding and updating conferences”
Per participant for scheduled and ad hoc conferences (MCU only). Even if the conference default was
to enable H.239 from endpoints, while a conference is active you can disable the content channel for a
particular endpoint by displaying the participants for the conference and clicking on the name to
display the settings. See the online help topic “Customizing a participant’s layout view”. Equally if a
pre-configured endpoint's configuration has “Use conference default” for it's H.239 video contribution
setting, then this setting has precedence. See the online help topic “Configuring H.323 endpoints”
PC-based streaming of the content channel
As well as the H.239 content the MCU generates a version of the content channel video in a Codian-
proprietary format. This is used to stream the content channel video to PCs and H.323 endpoints that do
not support H.239.
It also allows additional functionality not available via the H.239 protocol if the web conferencing option
has been enabled:
Markup: overlaying the content channel video with graphics and text.
Text chat between those streaming the content channel video and other conference participants.
See the online help topic “H.239 (content channel video) support”.
Using the main video channel as the content channel
In addition to supporting the H.239 protocol, the MCU allows a participant's main video channel to also be
used for the content stream. (This is essentially what happens for VNC connections.)
If you are streaming a recording back to a web browser, Java must be installed.
L
- Codian Video Conferencing 1
- The Americas 2
- Asia Pacific Region 2
- Table of contents 3
- Chapter 1 Introduction 7
- Using this document 8
- Chapters in this guide 9
- Introduction 10
- H.323 protocol 11
- Video conferencing today 13
- MCU 4200 series 15
- Video ports 16
- Additional voice 16
- Concurrent streaming ports 16
- IP VCR 2200 series 17
- Gateway 3200 Series 18
- Simple scenarios 20
- IP network 21
- Sharing data with the IP VCR 23
- ISDN/PSTN 26
- Chapter 5 First steps 31
- The guest user 32
- Port reservation (MCU only) 33
- Auto attendants on the MCU 34
- Auto attendants on the IP VCR 35
- Localized MCU units 36
- Communicating with the unit 36
- First steps 38
- Chapter 6 MCU administration 39
- MCU administration 40
- Conference PINs 42
- Conference ownership 42
- Content channel support 42
- Enabling the MCU for H.239 43
- Configuring endpoints 43
- Setting up a H.323 gateway 43
- Cascading MCUs 44
- Load balancing MCUs 44
- Making recordings 47
- Enabling the IP VCR for H.239 48
- Summary information icon 49
- Transferring recordings 49
- Displaying IP VCR statistics 50
- Installing the ISDN gateway 51
- Basic call routing 52
- Advanced call routing 52
- Setting up a gatekeeper 53
- Monitoring calls 54
- Chapter 9 Using data 55
- H.239 contribution from 56
- Using data 57
- Configuring streaming 59
- Content channel streaming 60
- Web conferencing option 61
- Customizing streaming 62
- Chapter 11 Using a gatekeeper 63
- Conference Creation 64
- (MCU and IP VCR) 65
- Using a gatekeeper 66
- Chapter 12 Using firewalls 67
- Company LAN 68
- Internet 68
- Using firewalls 69
- Field Example setting 70
- Setting the system time 75
- Upgrading software versions 76
- Shutting down a unit 77
- General housekeeping 78
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