Before I go any further perhaps a quick definition or two.
The cloud in this context is any service that is on the internet somewhere, but the specifics are mostly hidden and abstracted away.
A PBX (or PABX in some countries) is a business phone system that allows you to call internally as well as via an outside line. Often they have other features such as call queues, conference rooms and voice-mail built in.
So why would you want a PBX, let alone a PBX in the cloud?
For little more than the cost of the phones themselves, you can have a PBX, so they aren’t particularly expensive – they are cheap.
It can allow you to keep track of what calls happened when and even record all calls if this is important to your business. This accountability is essential in many business.
It allows you to transfer calls around internally. While many cordless phones also have this functionality, they generally can’t be expanded above 4-6 handsets. a PBX can be expanded to 1000s.
It allows you to forward calls to where you are at that time. If you are out of the office, then forward calls to your mobile. Yes there is a charge for this, but better to be contactable than have annoyed customers. You can even choose to forward calls only from a certain callerid. This selective forwarding can be a killer application to some businesses.
If you have a PBX that supports VoIP (making calls via the internet) then you can save money over making calls via your normal phone provider. In the UK (assuming only a basic calling plan) BT charge 2.5p/minute. Localphone.com as an alternative currently cost 0.7p/min – big difference if you make a lot of calls.
Also, if you have it connected up to the net, you can get extra phone numbers for a lot less than a new line from BT – and they can be from a different area code or even a different country. BT charge £130 for installing a line at present and line rental is an extra £13.60/month on top of that. Extra phone numbers delivered over the internet can be less than £3/month and connection is often included for free.
Okay, so these are compelling reasons to get a PBX, but why host it online rather than at the business premises? Two main reasons. First, connectivity online is generally better than connectivity via a broadband connection. Most hosting providers have multiple redundant connection to the rest of the internet and they tend to be proactive about dealing with issues. If you host it at the end of a broadband connection, you have a single point of failure and it is possible that a fault could take an engineer 2-3 days to fix. This is a long time to be without phones in business and unless your provider allows you to forward the calls, you are going to gain some unhappy customers when they fail to be able to contact you. Online, a new server can be brought up in minutes should the worst happen.
The second reason is less tangible, but no less important. If you take advantage of services such as call forwarding or have call queues in your business, then any competing use of the same internet connection could adversely affect call quality. If the PBX is hosted online, then only the calls you have actually answered will be coming down your broadband connection, this saves bandwidth and can improve call quality all around and should the worst happen and your broadband connection fails, then the calls can be answered elsewhere by either unplugging your phone and moving it to another location, using a soft-phone on a computer elsewhere, or simply forwarding calls to your mobile.
This is already what we do internally here at Sysdom.com and we can provide the same solutions for you too.