School - Icma2002.Com

The past multiform weeks I’ve been operative upon facilitating the tall profile, bridged H.323 videoconference which takes place subsequent week upon Tuesday. We’ve had dual successful exam calls with any remote endsite. From the technical videoconferencing viewpoint things have worked ok as great as will work for the event, though in the 2nd exam call final week the tie had some-more pixelation than it had in the 1st call which took place during the opposite time of day. The network we’re joining upon has not implemented QoS as great as the bandwidth for the classification is shared. (It is the university.) They do have the videoconferencing room with the dedicated T-1 connection, though which wire is assumingly pulled without delay to which room as great as can’t be used in the meeting house where you have been hosting the event. I’ve requested which you have make make make make use of of of of of which dedicated connection, though that’s not probable given the category meets in the videoconferencing room any day– together with the day of the event. So, you have been in the incident where you have to have make make make make use of of of of of common bandwidth during the university. We have been creation this videoconferencing tie over IP as great as the commodity Internet, so it is theme to internal as great as outward bandwidth function fluctuations.

I have requested which requisite ports be non-stop upon the network firewall for the university, as great as they have been non-stop (according to the network gods) though you have been still carrying to have the videoconferencing tie regulating the H.323 gatekeeper. The 768 kpbs tie this week was as well pixelated to use, so you had to bond during 512, as great as even afterwards there was the little pixelation. If you can equivocate regulating the gatekeeper, the parcel detriment should be marked down given the tie won’t have to span the gatekeeper.

The university in subject is regulating the Packeteer PacketShaper network appliance, which permits IT wizards to guard network trade as great as “shape trade in real-time with stretchable policy-based QoS control.” Unfortunately the university we’re operative with has not implemented QoS upon their network, so the packet-prioritization we’re wanting as great as wanting for this videoconference is not (apparently) tenable with their stream infrastructure configuration. Bummer. I’ve referred to which they come in an difference for the port, IP address, and/or MAC residence of the videoconferencing codec we’re using, or configure which IP to be in the DMZ of the network, though it stays to be seen if any of those suggestions can be implemented.

According to Blue Coat, the brand new association which owns Packeteer:

74 Percent of the World’s Largest Companies have make make make make use of of of of of PacketShaper.

One interpretation of this is: In three-fourths of the world’s largest companies, large hermit is watching, as great as if you try to do something the network gods don’t wish or similar to they’re starting to close you down similar to the garage door.

photo credit: Marcin Wichary

The await info for Packeter provides the phone series to call for support, as great as I’ve endorsed which the internal IT dialect hit them. This was the same letter of reference you perceived from Tandberg technical support:

Currently Tandberg has no support for your 3rd celebration apparatus Packeteer Packet Shaper. Please try your vendor.

This incident highlights multiform things about videoconferencing as great as tutorial networks. Two which come to thoughts right divided are:

• Challenges as great as technical discussions similar to the ones highlighted in this post have been the BIG reason because couple of teachers have make make make make use of of of of of videoconferencing in the classroom. Network confidence has had to tie dramatically in the past 5 years due to increasing threats. Unfortunately in most contexts, which has not been the great thing for people who wish to videoconference (with H.323 apparatus or desktop solutions similar to iChat or Skype.)
• In the formidable network confidence environment, you need intelligent networks. When you was operative for the telecommunications provider “network neutrality” was something you categorically avoided blogging about. In the little net neutrality circles, advocates contend the resolution to the networking plea similar to the the single I’m describing here is to simply “throw some-more bandwidth during the problem.” Unless you can get which dedicated T-1 line for the videoconference, removing some-more bandwidth isn’t an choice for us. We NEED the intelligent network. We need QoS implemented. We don’t need or have to have deep parcel inspection to get the arrange of parcel prioritization you need to pledge the peculiarity of the videoconference connection. QoS can do which when it is scrupulously implemented. This is the undiluted e.g. of because intelligent networks have been needed.

I toyed with the thought of essentially creation this tie over my dungeon phone mechanism interpretation card, though given the stakes of this videoconference I’m not assured sufficient in it to try which for the genuine event. you competence try it to see how the tie is, though hopefully the resolution will be found which will let us bond during 768 upon the university’s network. If you had an accessible WiMax connection, which competence have sufficient speed, though again trustworthiness would be the large cause as great as which is utterly opposite comparing the consumer mobile wireless interpretation tie choice as great as the paid, dedicated hardwire connection. The most appropriate my 3G dungeon connection can do during this indicate is 384 kpbs up, as great as you wish some-more peculiarity than which for this connection. I’d similar to to have tall clarification quality, given the hosting codec as great as the discussion overpass supports HD, though with the singular bandwidth during the site which is not the remote probability for subsequent week.

Technorati Tags:
videoconference, packet, packetshaper, networkneutrality, smart, network, smartnetwork, bluecoat, h323, gatekeeper

Source: Wesley Fryer