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Video Calling Mobiles
There are many video calling mobiles available in the market. From Samsung to Nokia, there must be one that has video calling feature.
Check out mobile phones such as Samsung Soul, Nokia
6500 Slide and Sony Ericsson C902 if you want to get a video calling mobile phone. You can get one of these video calling
mobiles for free when you sign up for a contract. These phones are not only excellent video calling mobiles but at the same
time, you can do almost anything you want from taking pictures, surfing the internet and checking emails. +++++++++++++++++++++++
Also known as
"videophone", or "video conferencing", this feature lets two people with 3G video phones talk to each
other while viewing 2-way live video of each other.
Some phones with this feature have a camera that rotates or
swivels, so it can face the user for video calling, and face "out" for taking photos. Other phones have two cameras
- one facing in and one facing out.
This feature requires a 3G network that specifically supports video calling.
It will only work when the phone is in range of such a network. Both phones must also support video calling - not all 3G phones
A one-way variant also exists called "video sharing".
Skype lets you see and hear your friends with video calls. You must customize your settings
to enable video calls, but, like other Skype calls, they are free. Follow these steps to make
a video call on Skype.
Things You'll Need:
Double-click the "Skype" icon on your PC and log in with your username and password.
Click "Tools" at the top of the screen, and then click "Options." Click "Video" in the dropdown
The blue icon on the left will display your video optionsCheck "Enable Skype Video."
You'll now have access to Skype video settings.Set up your webcam connection.
It should already be connected to your PC with drivers installed. Select the webcam from the dropdown
list and test it again to make sure it works.Set your video call preferences below.
You can have video start automatically if you check--what else?--"
Start my video automatically."
Click " please save" in the bottom right to save your settingsTo make a video call, click the video button on your contact list or click "Start Video" once you are already
in a call.
Tips & Warnings
During a call, you can switch video on or off
by clicking that option in the call tab.
You need the newest version of Skype
to use video.
Download it at www.skype.com. At "Install," you will be walked through the video setup.
you don't have a webcam, you can see any contacts who have webcams
at their end--they just won't be able to see you.
Contacts must authorize their acceptance before you can make a
VIDEO-CONFERENCING BASICS AND TIPS FOR E-AZ CALL EXPERIENCE....
If your company's travel budget has been slashed or if the recent terrorist attacks have made
employees reluctant to fly, you may be considering videoconferencing as an alternative to face-to-face meetings.
Before you jump
in, here's a comprehensive guide to enterprise-level videoconferencing that covers everything from bandwidth requirements
to equipment options to deployment costs.
there are three distinct categories of clients defined primarily by usage.
Desktop: Desktop videoconferencing clients are assigned
to a single user. They cost between $600 and $3,000 for a hardware-based system and up to $150 for a software-only client.
Connectivity is over IP.
Small group: Either
an appliance that costs between $3,000 and $12,000 or a PC-based system that costs between $6,000 and $14,000. Small-group
videoconferencing systems are relatively easy to configure and use. They run over ISDN or IP.
Large group/boardroom: Provide the highest-quality video,
but also come with the highest price tag, with systems starting at $10,000. They also run over ISDN or IP.
of client devices, bandwidth requirements, and network components for videoconferencing.
Videoconferencing can leverage the existing
public telephone network, a private IP network or the Internet. The target bandwidth for interactive video communications
is in the 300K to 400K bit/sec per stream range. This includes audio and video as well as control signaling.
The H.323 protocol
does not require that two or more endpoints in a session send the same data rate they receive. A low-powered endpoint may
only be able to encode at a rate of 100K bit/sec, but, because decoding is less processor-intensive, it could decode a 300K
Nevertheless, in videoconferencing, bandwidth is assumed to be symmetrical. In full-duplex networks such as ISDN,
Ethernet, ATM and time division multiplexed networks, capacity is expressed as bandwidth in one direction, though equal bandwidth
is available for traffic in the opposite direction.
You need to estimate the number of simultaneous sessions your network needs
to support, and figure out if your network has bandwidth end-to-end.
A T-1 offers 1.5M bit/sec in each direction and would be ample
bandwidth for two 512K bit/sec or three 384K bit/sec videoconferences, depending on the amount of simultaneous traffic on
the network. Also, make sure that you have 10/100 switched Ethernet throughout the LAN segments where videoconferencing traffic
Multipoint conference bandwidth (with which three or more locations can see and hear one another) is calculated separately
from point-to-point sessions. Multipoint can be conducted in either IP or ISDN environments, and some conferencing units will
support both network types.
Multipoint conferencing products may be software-based or accelerated with special hardware, and their configuration
can produce different bandwidth consumption patterns as well as different user experiences.
For example, when
an endpoint is used to host a multipoint conference, the maximum bandwidth for any single participant is the bandwidth allocated
to that host divided by the number of locations participating. When you need to have more than four locations on a call at
the same time, network-based products are recommended.
If you decide that your IP network can't handle the additional traffic associated
with live video sessions in a merged or converged network deployment, your options are to rely on circuit switched networks
or to deploy additional IP bandwidth capacity.
The WAN connection
Approximately 80% of the group videoconferencing units installed today interface directly
with ISDN. Less than 5% use ATM, and the remainder are on an IP net.
ISDN is recommended when:
You are planning to connect with people in locations
outside your company.
The locations are
in Europe, where ISDN is easily available and broadband IP remains at least 50% more expensive than in the U.S.
Your IP network capacity is lacking
and you do not expect to place outbound calls more than two or three hours per month.
If you use ISDN for transport and you want to add centralized
user administration or system management, you can still install an Ethernet connection to each device and a management software
package such as Polycom's Global Management System or Vcon's MXM on a server in the company's data center.
The limitations of ISDN (Basic Rate
Interface or Primary Rate Interface) include:
Availability not widespread in the U.S.
Difficulty configuring and managing once ordered.
Subject to service interruptions (single
point of failure).
It has distance-driven
and metered costs (long-distance).
The infrastructure supports only one telephony-like service: multipoint conferencing.
Video calls on ISDN cannot be put on hold, cannot be
forwarded (when no one answers, when the line is in use or for any other reason), and there has never been a �video
mail box� on ISDN. Recording one side of an ISDN videoconference is possible using an analog VCR provided the appropriate
interfaces exist on the local client system.
The IP option
Using proprietary technologies or H.323 standard-compliant endpoints, an IP network designed only for data can be
modified to support business-quality videoconferencing services.
Where bandwidth is available, the IT manager would need to add
and adjust a few components to provide a complete solution, or outsource the management to a third party such as WireOne's
GlowPoint service or Sprint's IP videoconferencing services.
If the deployment is expected to have more than five or six systems,
a centralized user and network administration console such as Polycom's Global Management System, RADVision's H.323 gatekeeper
or Vcon's MXM is recommended.
Some companies are going a step further and designing an enterprise conferencing portal using technologies such as
FVC's Click-to-Meet. While these packages differ in their features and functions, they are designed to perform address book
management (an important issue when clients are set up behind a firewall and use network address translation), set performance
metrics on a per-device or user basis, and can even reduce the risk of application data traffic degradation due to excessive
quality of service (QoS) in a LAN helps to protect the integrity of service-sensitive applications without forklift upgrades.
Most of the leading network equipment vendors already support common QoS standards, such as RSVP; they only need to be enabled
by the network administrator.
You should also find out what your backbone provider uses for its QoS. If the protocol or scheme chosen for QoS in
the local loop is not the same as that implemented in the backbone, the enterprise network needs to put QoS translation software
in place for QoS requests to operate end-to-end during a videoconference.
Even when QoS protocols are in place, you may need additional
network tuning to ensure that the video applications don't crowd out data applications. To avoid this, network managers should
segment and manage bandwidth on each switch and router to limit the total, prioritized video traffic.
After provisioning appropriate bandwidth
and QoS, other challenges remain. One of the biggest obstacles is getting real-time video traffic through firewalls. Since
H.323-compliant applications use dynamically allocated sockets for audio, video and data channels, a firewall must be able
to allow H.323 traffic through on an intelligent basis. The firewall must be either H.323-enabled with an H.323 proxy, or
able to �snoop� on the control channel to determine which dynamic sockets are in use for H.323 sessions, and
to allow traffic through only as long as the control channel is active.
Merging and emerging services
Since the very essence of videoconferencing is communications
and most legacy systems are not on IP networks, the user is likely to encounter a situation where protocols need translation
across different networks. When a videoconference needs to span both the ISDN and IP infrastructures, gateways are necessary.
is the leading manufacturer of videoconferencing gateways and offers a variety of form factors and densities to meet diverse
Some companies have to share limited resources and want a reservation system to permit room or multipoint control
unit (MCU) scheduling.
Endpoint and MCU vendors offer some scheduling tools that may meet your company's needs. Third-party products, such
as Collaborative Systems' Orchestra, MagicSoft's VC Wizard and Global Scheduling Solutions' Global Schedule, have unique features.
When the videoconferencing
basics are in place for group conferencing, you might consider a number of optimizations. For example, by enabling IP multicast
and using intelligent clients, a network can efficiently support multiway meetings without adding an MCU.
If using IP multicasting to achieve
a multipoint scenario, each client sends only one stream of packets to an IP multicast group and all participating machines
receive the packets. In this scenario, bandwidth consumption is lower than when an endpoint or MCU sends out copies of the
same packet to each of the receivers.
Another second-generation feature found in products such as Polycom's ViewStation FX is
integration of videoconferencing with streaming media systems, enabling the broadcast of a videoconference from a coder/decoder
to many remote viewers via a streaming media server or to archive a videoconference on a streaming media server for later
an exception to the rule today, large financial services companies that have integrated videoconferencing into their corporate
cultures are beginning to deploy desktop videoconferencing capabilities. With Universal Serial Bus interfaces, setting up
a videocamera takes only a few minutes, in contrast with earlier desktop products that required opening the PC and installing
Low-cost Webcams put all the computational load from compressing video and audio on the host computer.
Optional hardware-accelerated cameras designed specifically for videoconferencing, such as the Polycom ViaVideo or Vcon Vigo,
produce the best results.
How much does it cost?
on the number of endpoints, the type of client and choice of networks, videoconferencing can cost as little as the price of
a Webcam ($100) per seat to more than $15,000 per conference room.
To budget a videoconferencing deployment, break down the fixed
acquisition costs from the recurring and usage-based costs. The exact fixed costs are going to depend on the number of systems
and the features your users need. In general, systems provisioned for ISDN will also support IP, but IP-only systems tend
to cost several hundred dollars to $1,000 less than ISDN systems because they have fewer components. Management software is
sold according to site licenses from $250 per license to $40,000 or more for unlimited licenses. Complete enterprise conferencing
portal environments suitable for large companies can exceed $100,000 per installation, depending on hardware and software
Another factor is the cost of installing the last mile. Basic Rate ISDN installation runs about $225 in most regions
of the SBC territory, while other regions tend to be higher. The cost of installing a T-1 depends on the distance between
your facility and the nearest central office.
are composed of the monthly cost of network access, network usage costs and, potentially, the salary for one or more technicians
managing network provisioning, installations, room or conferencing system reservations, technical support and user training.
The largest variable in this equation is the network usage costs.
ISDN usage charges vary but can be estimated for individual customers
(one site) at 5 cents per minute per B channel. A 384K bit/sec videoconference will consume 6 B channels at a cost of approximately
30 cents per minute, or $18 per hour. Companies that negotiate their telecommunications rates with carriers for voice and
video usually receive discounts on this rate.
ISPs also charge for capacity, though not by the minute. To calculate the costs of IP backbone
services, multiply the data rate by the time. A 384K bit/sec call for one hour will generate nearly 1.4G bits of bandwidth.
On a VPN the network usage costs are already fixed and the company will incur no additional charges.
Going with a managed service provider
can be cost-effective for some regions and some companies. GlowPoint's Web site offers a calculator, and users can plug in
the number of hours of usage per location and the average cost of ISDN service to obtain a cost estimate.
The costs of deploying videoconferencing
are as variable as the networks and depend on the number of installations, features and choice of network. Cost of ownership
runs about $15 per hour for a midsize enterprise. It's safe to predict that costs will continue to fall as more people get
on the bandwagon. And, in the face of rising travel costs, getting a rapid return on your investment in videoconferencing
is easier now than ever before....especially for those that "do" Cloud computing 100%.....