Video Conferencing over Low speed WAN links

Hi there,
Can somebody explain possible point-to-nultipoint video conferencing solution over low speed WAN links ?
( I have central site and about 20 remote sites - hub and spoke configuraition)
a. What is the minimum BW requirement
b. If using Cisco Video advantage at users desktop how do we select the proper MCU at the central site ?

Buffer 15 to 30 seconds. Make sure to tell them there will be
a long load time. There really isn't much you can do besides
that.

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Video conferencing over LAN

I want to do a project on video conferencing over LAN .Plz help me
for implementation.

Have you tried AVTransmit2 and AVReceive2 to transmit multicast stream. then have multiple receivers join and disconnect.
It works without any code modification, so I would study the differences between that and yours.
I think I asked this before, are you transmitting multisession?? and receive multisession??
Are you using linux by chance?

Video Conferencing over VSAT Link ?

Hi,
Is it possible to have a video conferencing using 2921 CME 8.6 router and 9951 video IP Phone over VSAT Link ?
If yes then what should be the max latency that is acceptable ? What should be the bandwidth ?
Plz help me out with this.
Regards,
Gaurav

bandwidth should be at least 384k or 512k

H323 Video conferencing over WAN

We have the following setup for a pilot Videoconferencing project running over the WAN. The video quality in general is not satisfactory.
1) Tandberg 880MXP registering to local gatekeeper. Another Tandberg 770MXP registering to the above gatekeeper.
2) The 770 MXP is located in a remote office, connected via a VPN link.
3) The available bandwidth is 1.2M and the link is not used much for data or voip, so we get about 1M always for video.
4) the WAN link is a ATM connection to the remote ISP, in the headquaters here the link bandwidth is 30M.
5) The tandberg 880 and 770 are on separate internal subnets.
Problem
1) The video quality even with a 256k video call is average with lots of pixalation and some packet drops.
2) The average delay is 40ms and avergae jitter is 8ms.
3) The endpoints register about 8% video packet loss/drop.
4) The call never drops, but constant packet loss occurs.
5) An iperf test run over the same link, showed a consistent 1M bandwidth with 0.01% packet loss in general.
We have tried various qos policies and also tried running without a VPN over GRE tunnel. But the quality is still unsatisfactory.
Side notes:
1) A call to other locations tends to be very good. Probably pinning the issue on the wan link. but we are unable to find the real cause.. especially with iperf tests working fine.
Any help, leads or directions would be extremely helpful.
Thanks
Manish

Hi,
iperf only shows packet loss, while the the endpoints are suffering from late packets also.
Are you doing qos pre-classification to mark the DSCP value in VPN outer header too ? That would give ISP a chance of applying some QoS to your video, at least they can be asked to do so.
Hope this helos, please rate post if it does!

Video Conferencing over IP

Hi,
My customer has cucm8.x, cups 8.x and Unity 8.x in a centralized call processing with 5 remote sites in total connected via MPLS. They are interested in a video conferencing solution for boardroom and desktop.
What cisco solution (hardware and software) should I be looking at to satisfy this need. I need to make a presentation tomorrow, assistance is much appreciated. In the board room they would like to use their LCD TV as well for picture display or any other alternative. Not telepresence, too pricy for their requirement
Nki

Well, you may not care any more since you have presented you may have already presented your solution....
Anyway, Cisco TelePresence no longer refers to the high-end "immersive telepresence" product line. Cisco has decided that TelePresence is a brand not a product. This brand now includes hardware and software that have been absorbed in the Cisco portfolio as a result of the Tandberg acquisition.
So, don't let the term TelePresence in a Cisco doc throw you off.
Cisco has plenty of video options in their portfolio now, go here:
http://www.cisco.com/en/US/partner/products/ps7060/products.html
HTH.
Regards,
Bill

Video Conferencing over LAN's

Hi,
I would like to set up video conferencing for our company. Ideally we are looking for the ability for internal users to use CUVA with their IP Phones (which they can currently do), with the ability for other companies to also connect - I'm guessing through a gateway device. Multiparty conferences are required. We also have a few Tandberg H.323 devices in meeting rooms which would be good to be included. What would be required for this setup? Is a Cisco Unified Videoconferencing 3515 Multipoint Control Unit (MCU) all that is required or is there additional requirements? Your thoughts, etc would be appreciated.

bandwidth should be at least 384k or 512k

Video Over Low Speed Link

Posting some family videos on a website, plenty of bandwith
on the web server side. However on the user side anything less than
1.5 downstream the video plays for a few seconds and then buffers
and then again so I never get a good video play.
I've only played with the buffer time up to 5.0 and gets
better but of course there is the wait thing and I don't know how
to put a preloader for the video part. Any thoughts here are
appreciated by me and my kids Grandmothers.
Thanks.

Buffer 15 to 30 seconds. Make sure to tell them there will be
a long load time. There really isn't much you can do besides
that.

Video calls over E1 ISDN PRI link

Hi All
I have an ISDN E1 PRI Link through MGCP gateway, the telco say that they will provide a Video call service through this link for up to 30 calls!! is that possible (voice is working fine)??
What I know is a 64 k provided by each ISDN channel is not enough for Video calls unless using MCU or a gateway to aggregate the isdn channels.
Other people suggest that with H323 gw this can be done.
Call flow: Mobile Phone ==> ISDN ==> MGCP (or H323 if required) ==> CUCM==>Video enabled phone
Please advise..Many Thanks

Hi,
H.323 is supported in Cisco ISR routers. It is recommended to have dedicated video gateways the Cisco (ex Tandberg/Codian) 3200 Series would be better.
Section in the below: Dedicated Video Gateways
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/collab09/clb09/gateways.html#57896

OS/2 Filetransfer per NetBios over a 2Mbit Wan Link

Hi all,
my customer change from Token Ring to Ethernet since the change the netbios traffic performance fall from 230kbit/s throuput to 18kbit/s.
IP traffic is not be affected, IP runs with 230kbit/s.
We have an Ethernet-(Router1)-2MbitWAN-(Router2)-Ethernet connection, between the Ethernet goes an DLSW peer.
Netbios traffic (Filetranfer)goes from a OS/2 Client to a OS/2 Server.
Router1
source-bridge ring-group 67
dlsw local-peer peer-id 45.x.x.x promiscuous
dlsw bridge-group 1
dlsw prom-peer-defaults host-netbios-out
interface Loopback0
ip address x.x.x.x 255.255.255.255
interface FastEthernet0/0
bandwidth 100000
ip address x.x.x.x 255.255.255.0
duplex auto
speed auto
bridge-group 1
hold-queue 150 in
interface Serial2/3
bandwidth 2000
ip address x.x.x.x 255.255.255.0
down-when-looped
serial restart-delay 0
Router2
source-bridge ring-group 67
dlsw local-peer peer-id x.x.x.x
dlsw remote-peer 0 tcp x.x.x.x priority host-netbios-out
backup-peer x.x.x.x
dlsw bridge-group 1
interface Loopback0
ip address x.x.x.x 255.255.255.255
interface FastEthernet0/0
bandwidth 100000
ip address x.x.x.x 255.255.255.0
duplex auto
speed auto
bridge-group 1
hold-queue 150 in
interface Serial0/0
bandwidth 2000
backup delay 1 40
backup interface BRI1/0
ip address x.x.x.x 255.255.255.0
down-when-looped
Have somebody a idea and can help me
Thanks
Rainer

I think that you need to find out the bottle neck. I suggest you to do the following:
1. use show TCP and find out if there are excessive retransmission
2. use show dlsw circuit and find out if there are any flow control indicator
3. use show llc and find out the state of the LLC2 circuit
If the above show commands do not give you any hint, you may need to take a sniffer trace to capture the llc2 session (either on the token ring side or ethernet side)

So is anyone doing video conferencing over 3-4G?

My DSL is horrible 1Mdown 380K Up and considering going to mobile because of speeds. My question would be around latency and jitter.
Thanks

Hi bahamamills, welcome to the community. Are you asking about speed? With 3G, download speed average 600 Kbps - 1.4 Mbps, upload 500 - 800 Kbps.
4G average download speed is 2 to 5 Mbps, upload 5 to 12 Mbps and average latency 30ms. Keep in mind a latency below 50ms is equal to wireline connections.
You can confirm coverage in your area at www.verizonwireless.com/coveragelocator
To read more about our 4G network go to www.verizonwireless.com/4g
We do have great 3G coverage in Bahamas, NC and a 14-day trial period so you can try the service yourself without any obligation.
Thanks. Have a great evening!

Is it possible to use a Cisco 2800 IOS H323 voice gateway for video conferencing over ISDN?

I have seen this page and was wondering if what it says actually is possible and works? I also have got a CUCM 8.6 that I would like to use for call routing via my old 2600XM gatekeeper.
http://www.cisco.com/c/en/us/td/docs/ios/12_4t/12_4t11/h320gw.html#wp1047659

I have seen this page and was wondering if what it says actually is possible and works? I also have got a CUCM 8.6 that I would like to use for call routing via my old 2600XM gatekeeper.
http://www.cisco.com/c/en/us/td/docs/ios/12_4t/12_4t11/h320gw.html#wp1047659

Video Conferencing - RSVP reservation drops.

Hi Folks,
We are trialling a video conferencing deployment. Our WAN topology is via BGP connections to a carrier's MPLS cloud.
We have configured a Communications Manager 6 server. When we connect our 2 test routers via a local test router using EIGRP, we initiate a call and are able to see a single RSVP reservation establish and hold up indefinitely. When we attempt a second video call, it is correctly refused as per our intended policy. However, when we connect the 2 test routers to the carrier's IP cloud via BGP, we cannot get the RSVP reservation to hold up, it drops after 60 seconds (as per the CM6 setting) and we note Path Tear messages in our RSVP debug.
Could anyone provide advice on why this would be happening. Configs attached.
Cheers, SteveK.

This may not apply to you, but it just might. I just discussed something similar concerning an MPLS cloud on which video setup would fail. The customer, in a troubleshooting effort, bypassed the MPLS cloud and ran the video directly over VPN and the conferencing worked fine. When the customer reintroduced the MPLS cloud path, the setup failed.
After troubleshooting, it was ascertained that the video call setup encountered errors because the MPLS cloud could not process the size of the MTU packet being sent. You may wish to look at that as a possible point of failure.

New video Conferencing project

Hi, thanks to all in advance, I hope you can help, this the situation: My company just purchased a list of devices which include:
IPVC-3515-MCU12
CISCO2851
IPVC-3527-GW1P
Now, I have no experience with Video Services deployment, where do I start? what are the requirements if this needs to go over the internet to another site, what is involved in this? multicast, QoS, etc? and where can I get some white papers to begin with, thanks again.

You need a very good bandwidth. It should not be less than 512 kbps. You have to enable the QoS and codecs.
Implementing QoS Solutions for H.323 Video Conferencing over IP:
http://www.cisco.com/en/US/tech/tk543/tk757/technologies_tech_note09186a0080094968.shtml
Take a look at the following link for basic gatekeeper concepts and configuration.
http://www.cisco.com/en/US/tech/tk1077/technologies_tech_note09186a00800a8928.shtml
http://www.cisco.com/en/US/tech/tk1077/technologies_configuration_example09186a00800a9a56.shtml

Load balancing over two separate outside routers and two separate WAN Links

Hi everybody,
I have one 2851 setup with two separate ISP links and have it configured for failover with BGP. It works great but doesn't load balance.
Well now I have to new routers (3925's) to replace the single 2851 and I want to configure them to load balance over separate WAN links.
Can someone help figure out the best approach to make this happen? I would really appreciate it.
Thank you,
Thomas Reiling

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The "best approach", IMO, would be to use PfR (if your routers support it).

EEM -automatic shut down or switch over of WAN link in OSPF when packet drop increase

Hi,
Need help..
can any one help me how can EEM help for automatic shut down or switch over of WAN link in OSPF when packet drop increase a predefined level.
I have a set up different branches connected together...OSPF is the routing protocol and need to communicate with two branches via hub locations.
need to shut or switch some percent of traffic from primary to back up when packet drop in the link.

I am not sure EEM can do what you want.
Another option could be to use SLA tacking/monitoring. But you will fall back to the new route when you lose some percentage of pings, you can't switch only part of the traffic.
I hope it helps.
PK

Video Conferencing over Low speed WAN links

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