Friday, February 27, 2009

Disadvantages of Voice Over IP

Even though the VOIP technology is being considered technological due to its products and services, it ends up having its cons on the other side of the IP networks. These are some of the main reasons why although VOIP being supported technologically it is still yet to cop up with the market and therefore not a frequently used tool of communication amongst people.

Here are some of the Disadvantages of VOIP Compared to IP

- Due to the IP addresses originally made and designed specifically for the transfer of data and no consideration was put forward to include the real-transportation of voice packets therefore VOIP experiencing problems when trying to run on such networks.

- Delay in Network:- This delays in IP networks occur due to the nature of data communication whereby insufficient bandwidth may end up being a problem to VOIP especially when the traffic on the network is congested and heavy. This also occurs when there is a continuous struggle between voice and data packets.

- Delay Jitters:-These are variations that occur in the delay of packets in the network. There is always a possibility that when two packets send from the same source towards the same destination may end up taking different routes through the network, this normally happens in packet-based networks because the packets are normally routed through the network independently, therefore, two packets between the same source and destination may experience two different processing delays and different congestion occurrences in the network therefore resulting to a variation in the overall delay experienced by the packets.

- The Cost:-Usually, the major disadvantage of a new product, item or technology in the market is always the initial cost. Therefore, wire line communication is definitely very cost effective due to almost all the R&D having been completed in the area, infrastructures are already built, and the public is basically used to using the initial type of media. To use VOIP more often, you will have to incur major costly changes and for stronger and more reliable networks, you will have to build a better bandwidth and a better Quality of Standards Compliance, new products and services will have to be developed.

- Due to the data travelling across the internet, there is a great potential of drop outs which are just similar to what happens with cell phones thus affecting the quality of the voice.

- Due to the architecture of some of the services of VOIP solutions, it becomes a requirement that both the communicators should subscribe to this service in order for the communication to be complete. In cases where it is dealing with the software it entails for the software program to be installed on both ends to enjoy the services.

- By the virtue that VOIP requires a live internet connection, it can easily be affected by a power/electricity failure therefore hindering the communication.

- Another major drawback is when it comes to the 911 emergency service, unlike the traditional telephone it becomes very difficult to locate the exact location of an IP address with a geographical certainty.

Thursday, February 19, 2009

5 Powerful Advantages of Broadband Telephony Services

The concept of low rate VOIP internet phone service is new if one considers the unharnessed potential of this technology. Casually, this has been in use in major countries for quite some time and it is only a matter of proper public marketing that low rate VOIP services become a household name. As it is, more and more service providers are entering this field, so there is no dearth of quality deals.

A VOIP Internet phone functions by sending digital audio signals in small packets of digital data over the internet to other VOIP phones, the usual PSTN phones and land lines, or another computer with internet facility. As VOIP employs existing internet network, it can transmit a single call to multiple numbers thus making call conferencing a breeze.

5 powerful advantages of low rate VOIP internet phone service:

1. Slashing costs - As these phones are easily incorporated into an existing infrastructure, there is no need for an additional telephone network thus slashing bills by more than 40%. In addition to this, the long distance call charges are much less compared to traditional phones.

2. Secure call encryption - A major hurdle in processing secure telephone calls between traditional phones is converting and reconverting them into digital signals. This process is already there in a VOIP phone and thus the standard route of encryption becomes shortened.

3. Several advanced features - A VOIP internet phone service can be complemented with advanced telephony features such as call routing and Automated Voice Response systems.

4. Easy integration with other facilities - The fact that a VOIP phone works with a computer and an internet network makes it effortless to exchange other information, files, do video conferencing, pass on address books and so on.

5. Increased accessibility - all one needs to make a VOIP call is a high speed internet connection and a subscription with a VOIP service provider. Hence one can use this practically anywhere.

Friday, February 6, 2009

Moving Office? Cannot Keep the Old Phone Number?

Here's another valuable tip, not available to thousands of business owners in the pre-voip era.

So you are moving offices, and for whatever reason, your phone company declares that you will not be able to keep the same phone numbers?

What do you do now?

I recommend switching your phone lines or "porting" to service providers who are able to give you the same number at your new location.

If regular land-line service providers cannot do this, then look around for VOIP phone line providers. Don't worry if you hate VOIP and refuse to buy cheap service and risk your business' reputation.

You will have to do a bit of research to find the most suitable VOIP phone line provider who will be able to "port" your existing telephone numbers onto their service and the rest is easy.

Once the phone number has switched vendors or "ported", just get this vendor to forward your line to the lines at your new location. The phone lines at the new location can be from your old telephone company or any new vendor.

It can be the same VOIP vendor too, if you want to save more money !) Advantages of going with this plan : Your regular telephone company would charge you way to much to forward your old lines to the new location, with the same result.

Results may differ based on telephone company and location. Please check with your telephone company and compare the costs, before making a decision.

There are chances that your existing telephone company may come back with a great deal in order to keep your account!

Thursday, February 5, 2009

Cisco Unified Communications Manager and SIP Trunking

SIP trunking is becoming a very popular way to connect to the Public Switch Telephone Network (PSTN). Session Initiation Protocol (SIP) is a signaling protocol, widely used for setting up and tearing down multimedia communication sessions such as voice and video calls over the Internet. Instead of a line from your local provider (AT&T, Verizon, etc..) you connect to one of a number of SIP trunk providers, sometimes referred to as Internet Telephony Service Provider (ITSP). They can provide telephone numbers in most of the area codes and provide features like Direct Inward Dial (DID) and Caller-Id over the SIP trunk. Think of Vonage, but on an enterprise scale.

What is confusing to a lot of people is that the SIP Trunk is a logical connection. It is not like POTs, T1 or PRI that are physical connections. The most common ways to connect to the ITSP is over the Internet or a private MPLS circuit. The biggest limitation of using the Internet is the lack of Quality of Service (QOS), but it is surprising how well it works.

SIP Trunks have been supported in Cisco Unified Communications Manager for a while. Configuring SIP trunks directly into UCM has it limitations. This is why Cisco has recently added expanded SIP trunking support on their routers. Cisco Unified Border Element (CUBE) is a feature set that can be added to the voice gateway. There is an added cost for the software, but when compared with the cost savings of going to SIP it can make a lot of sense.

Tuesday, February 3, 2009

Key Telephone Systems Vs VOIP-IP PBX Phone Systems

What is the difference between a Key Telephone System & a PBX Phone System?

With the introduction of VOIP or IP Phone Systems, this old-technology question is becoming all the more relevant in your final decision to purchase the right phone system today.

I have cut and pasted the following text from a Google search, just to show you a classic example of a technically correct explanation for this question that would not only be technical jargon to you, but also throw up a bunch of new questions.

A key system has telephones with multiple buttons that permit the user to directly select the telephone company's central office phone lines. A key telephone system (KTS) is not a switch.

A private branch exchange (PBX) allows several trunks (outside lines) from the central office to be shared and the switching for selecting these lines is within the PBX. A PBX is sometimes referred to as a phone switch.

Key systems are usually found in small companies where few features are required. A PBX is usually found in larger companies that need more capabilities.

Was I right?

Now your questions would be :

- What is a switch? What is central office?- I didn't quite understand why PBX is a phone switch and the KTS is not a switch?

- Why do I care?- I want to know what each can do and cannot do for me?

- Now what do I need to have in a phone system and what not? How do I know?

- I am a small business, so do I have to look out for a Key Telephone System?

- Is the PBX Phone system not for me?

- Is the PBX more expensive?

- Well I don't want to be stuck with something that is having few features, so what do I do?

- What other features does a PBX have, which a Key Telephone System doesn't
have?.....But I know somebody who has a business phone system and he says its a PBX... he has a staff of six! And I am confused! Did he get cheated? or Did he pay too much for something he didn't need?

- Gosh, I didn't even know there were two different types of phone systems?

- Help!

Ok. Here is my version of the explanation...

And this is really the most important thing you will ever need to know in today's market, where there are hundreds of new phone systems with VOIP technology, IP PBX Systems, IP Phone Systems that are competing with the Panasonic, Nortel, Avaya, NEC, Samsung types.

Just recently during a sales meeting, a prospecting client was all in favour of the new IP PBX from Microsoft...the Microsoft Response Point, but it was this KEY difference, (no pun intended!!) that made them reject the Microsoft Response Point and choose the Traditional PBX from Panasonic.

What was this "key "difference?

Key System Functionality is seen when each business phone or extension connected to your business phone system is able to have a button ( called Line or CO Button) dedicated for each Phone Line that you have for calling out i.e. the local telephone company or CO lines.

When you press this Line Button on your phone, you are actually connected to one of the CO Lines from your phone company.

Lets say you have subscribed for 4 business telephone lines from your local phone company then you will have Line 1, Line 2, Line 3 and Line 4 Buttons on your business phone.

You are able to pick and choose what ever line you want to dial out. Also if one of the lines is faulty you will actually hear a crackling or if it is dead then you will hear nothing except a slight hiss. In short you are able to SEE all your lines coming into the office.

You are also able to see the status when someone in the office is using any of the CO Lines, because the corresponding Line Button will be lit up RED or have a Black Triangle against it ( this feature is available in all business phone systems with slight variations.) If you press this Lit up Line Button, it will beep at you and if you have a display , it will show you the current status as LINE BUSY.

Based on my experience in the practical world, KEY Telephone Systems HAVE All and more features than PBX phone systems.

In fact this very feature of Having Line Buttons or Line Presence is a HUGE HUGE factor for most small businesses who usually have about 3 to 8 CO Lines and about 3 to 25 phones.

And what is a PBX Telephone System?
In fact, the PBX Telephone System, in the practical sense, does not have the Line Presence feature or CO Line Button feature at all!

Which makes the PBX System a bit inferior when compared to a Key Telephone System. Doesn't it? Well, take my word..this is true. Key Telephone Systems today have all the features you will possibly need, whether you are a big business or a small business.

It is true, though, that if you are a very very large business , like Microsoft, or GE or AT&T etc. i.e if you need lots and lots of CO Lines than the number of buttons on your business phone, then you would go for a pure PBX Telephone System.

(That doesn't mean you cannot use a Key Telephone System for large organizations...Key Telephone Systems can be SETUP as PBX systems, but PBX systems CANNOT be setup as Key Telephone Systems. )

Didn't mean to confuse you...but ignore this comment and read on.

A PBX or Private Branch Exchange, is a business phone system that doesn't need the ability to have Line Presence on all its business phones or extensions. Now there are technical differences in how they work, as a switch, etc etc. but when it comes to your understanding,that is the KEY feature.

Both phone systems have the ability to handle multiple lines, multiple conversations, auto-attendant, voice mail boxes, for a wide range of office sizes.

The really really important thing to know today that most of the IP PBX Systems or IP Phone Systems or VOIP Phone Systems DO NOT have the Line Presence feature.

And if you think that's important to you, just like my last client did, then please don't opt for the IP PBX Systems. You will have nothing but a nice headache!

But you will want the latest and the greatest or the simplest and easiest IP PBX systems or VOIP PBX Systems, if you like the other features it has.

Till then...happy calling.

VOIP Advantages to a Business

Voice over IP (VOIP) provides endless advantages to companies and individuals over both standard telephone services and existing IP communications. But, like other technologies available, VOIP technology can also provide the potential for individuals and businesses to use it for abuse.

Cost Reduction

Though initial start up fees maybe more expensive than an ordinary phone service. Seeing as VOIP, Internet and other services all share the same pipe within a business, VOIP is considered to be free once set up. This drastically reduces the costs when companies use their phone lines for customer services and communication within and outside the business. Therefore, all the businesses data is being sent over a broadband connection essentially saving both time and money.

Long term investment

Seeing as VOIP converts the voice signal from your handset into a digital signal to travel the Internet and then back into a voice signal again so the person on the other side can understand you makes VOIP technology faster and widely expandable. Therefore, VOIP is here to stay being due to the fact that it is one of the industries fasting growing technologies along side its partner, the Internet. As log as a business has Internet, VOIP technology can be active and what is a business today without the Internet?

An expanding array of accessories

As VOIP grows, so will the devices made available for it. Even though any sort of ordinary phone can be converted into a VOIP phone, it is often the case that VOIP specific accessories provide premium sound quality along with durability and comfort.

Larger scale phone systems

As VOIP technology has grown, some business have held back due to the fact that VOIP cannot yet be applied to large scale phone systems. This is due to the fact that unlike standard phone systems, VOIP technology does not yet have a common standard. But luckily, industry experts and businesses are working on this problem by trying to implement a technical standard as a way around.

Easy adaption

As possibly every business has a Internet connection and phone line, VOIP provides a cheap an easy adaptation to its service. This allows businesses to to convert over to using VOIP at a very cheap cost. It is often the case that all that is needed is a specific router plugged into the Internet line and the existing telephone to become VOIP technology enabled.

Summery

As for now, VOIP is considered a compliment along side a traditional phone service. Though some companies have flown into using dedicated VOIP systems, it is often the case that these businesses a fully fledged big earners. The low cost of VOIP is providing businesses with a service they cannot refuse and over time its guarantee-able that VOIP will be the and is the next form of communication.

Monday, February 2, 2009

Conferencing Through the Internet

Internet conferencing allows people in a variety of locations to communicate with one another through the Internet, real-time. This can be in the form of text Instant Messages in the same chat room, voice conferencing or video conferencing. Large companies have held phone conferences for years and paid an arm and a leg for them. These days everyone is saving money through Internet phone conferencing instead.

Internet conferencing at a low price

For businesses and individuals, provides a cheap alternative to traditional teleconferencing through the phone line. If all members of an Internet phone conference are on the same system or using the same conference call provider, crystal clear Internet conferences can take place with absolutely no cost and without hassle.

Save time and money with Internet Conferencing

Conferencing, in general, saves a lot of time and resources. This is because information only needs to be dispersed one time, instead of in a relay of email messages or phone calls. Conferencing saves times and it saves money so it really is a practical option when you are considering ways to communicate with a large number of people in your organization at one time.

Internet phone conferencing equipment

If you are considering using VOIP to conduct conference calls, you must ensure that all participants have all of the correct equipment to make the call go smoothly. It makes sense to send out a checklist of some sort to remind people and to show them how to prepare for the conference call. This will eliminate communication problems and information being lost by certain parties during conversations where important issues will be discussed.

Prepare for Internet phone conferences

If you have taken on the task of promoting technology in your company and warming people up to the idea of using the latest technology on an every day basis then you must work hard to present things well. In all honesty, the only way that clients and executives will be sold on using audio conference call is if calls run smoothly and equipment functions correctly. You can completely avoid and eliminate unnecessary problems by ensuring that anyone that will be involved in your conference calls has all of the necessary equipment. You do not want people entering the conference call, saying "testing, testing, 123"; very unprofessional!

Instant Messenger Conferencing

All of the major VOIP companies offer some type of conferencing options. In addition to this, Instant Messenger systems also offer conferencing. It is a good idea to ensure that everyone that you want to talk with is using a broadband Internet connection so that the flow of the conference call is not interrupted by a bad connection. All participants must be able to hear what is being said clearly and also heard by all parties. If you decide to use an Instant Messenger conference service be sure to use the voice option so as to make the conference smooth and easy. Almost every major Instant Messenger company offers a voice to voice option.