How to organize a videoconferencing?

Question

Telephony

From a piece of iron is available:
Cisco Business Edition 6000 H with CUCM 12.0
Phones with a camera (for management): 8865
Projector, computer.
The plan is to purchase the Relacart congress system.
There are tasks in the organization of videoconferencing in the following modes:
1. Assembly hall - management offices.
2. Assembly hall (now a computer with a projector, later Relacart) - management office (SIP phones) - Remote branch (now a laptop, later compact sets for videoconferencing).
3. Assembly hall - Remote branches (3-4 at the same time).
Connecting multiple points implies different modes of displaying video from cameras on one screen.
There is little experience with IP-telephony and video conferencing. I re-read a ton of pages, but so far I have not collected the information received into a heap, and not everything is clear in order to have a clear picture.
As a result, what is better to use, what is cheaper (SFB or Cisco Jabber), are there any free solutions?
What software should be on the BE6000H?
How can you output video from such a conference to a regular TV with Ethernet support?

Answer 1

For the assembly hall, buy a normal codec from Cisco.
To collect videoconferencing buy Cisco Meeting Server.
On the PC I used either Cisco Jabber or Cisco Meeting App.
The Meeting App does not require a license.

Answer 2

I'll tell you about my experience. The equipment is old but works.
The center of the entire network is asterisk. He manages access rights, routing, call center queues, call accounting, etc.
9917 phones are registered via SIP on an asterisk , without CUCM.
The VKS server is openmcu-ru. Cisco MCU works with it - if you need to chain many points in HD (20-30), the servers are connected in a chain. It is the MCU that is responsible for directing the video and sound during the conference - who to bring out in close-up, who to turn on the microphone, etc.
Traditional telephony is also integrated there using the H.323 protocol through an expansion board in the Panasonic TDA200 PBX.
Mobile phone access via VPN. On android program CSipSimple (with video), on apples - Linphone.
In the halls - Cisco SX80 (it's gorgeous) + video wall.
On Ekiga or Linphone desktops.
The total is obtained. People have one phone on the table, which receives both calls from the city telephone network (via Panasonic - H323 - Asterisk - phone), and any local combinations, plus access to the conference.
A remote user with a mobile phone (via IP) can also easily call any number inside (including an analog phone plugged into the Panasonic), and any number outside, as well as call a videophone or a conference call.
During the conference, you can connect (voice only) any non-IP phone, even an internal one, even a voice call to a mobile phone or a landline phone.
Naturally, this is all driven by a bunch of rules in the asterisk, so that the rights are differentiated, or scenarios like "I'm not there" are implemented - first the call goes to the person's office, then via IP to his mobile, then just to the mobile, a traditional call.
On the last question (about the TV) - openmcu-ru supports streaming to ffmpeg - and from there you can broadcast anywhere, even to the site (there is a positive experience, including the return to the mobile phone in the browser), even to the TV.