Of course, when you have decided to order your SiP trunks or Cloud  Based PBX VoIP services, you will need the Telephones to suite.

Examples below:-

T48G from £275

T29G from £179

W52P Dect from £89.99 (additional handsets from £59.99)

Conference Phone CP860 with T27PN from £419

T48G SFB from £279

VC-400 System POA

 Other phones are available.

A question we get asked all the time is what is the difference between a cloud phone system and a SIP trunk? In this article we will try to make this clear for you. A SIP trunk, whilst not a precisely defined technical term, is generally used to refer to the connection from a customer’s SIP device to their VoIP provider’s network.

A Simple SIP Trunk

The customer’s SIP device might be a soft or hardware phone, if they are using a trunk like our simple Smartline product, but more commonly the customer will probably be hooking up some kind of IP PBX system to their provider’s network.

A simple network diagram showing SIP devices connected to a SIP trunk
A network diagram showing SIP devices connected to a SIP Trunk

The advantages of a IP PBX solution

Since an IP PBX is a Back-To-Back User Agent (B2BUA) and not a mere SIP Proxy, it is able to provide a range of really useful additional features over a standard SIP trunk.

We'll briefly outline these features here for you now, but for those of you who want to get technical, you can read our explanation of the different types of SIP proxy servers, including B2BUA's here.


One of the most basic features that users want access to is voicemail. Every extension set up on the PBX will have their own voicemail account and there is usually a facility to have your voicemail emailed to you after a message has been left. With a cloud service, such as The Orbtalk Cloud Phone System, you will also get the option to log into some kind of portal in your web browser to download and manage the recordings at your convenience.


Queues are a highly demanded service. For even small businesses, nobody wants their customers to be phoning and getting a busy tone or a phone that just keeps ringing. With queues, customers dial into the queue itself and not to a particular employee's phone, so it becomes easy to manage teams of people and to rota who is going to be available to take a call and when.


Conferences are brilliant for remote working. Whether it's for employees that home work on certain days or just to talk in detail with a client, conferences mean there's no need to always organise a face-to-face meeting. Just get everyone in the meeting to dial in from wherever they are and the meeting can begin.

Interactive Voice Response (IVR)

Interactive Voice Response (or IVR) is a rather complex to describe an audio phone menu that your customers dial into. By giving the customers the ability to direct themselves to the correct department or employee, you can significantly reduce the number of disruptive calls that you employees currently have to take and transfer on.

Please note that all of these features and more are provided by our own Cloud Phone System product that you can read in more detail about here.

An On-Site IP PBX

A network diagram showing SIP devices connected to an ons-site IP PBX
A network diagram showing SIP devices connected to an on-site IP PBX

In order to take advantage of a range of useful additional features (which we'll come to shortly) many customers choose to deploy an on-site IP PBX, as can be seen in the second diagram.

So what’s the benefit here? At first glance, it appears to have just added additional complexity into the customer’s life - and in some ways it probably has! However now that their phones are connecting to a PBX server, an exciting range of new features become available. All of the customers phones that connect to the PBX can now call each other free of charge and they also get access to facilities such as voicemail, queues, IVRs and time of day calling. All of this functionality is offered within the PBX and it’s not until one of the phones tries to place an outbound call that the PBX will send a call “off-net” to their SIP provider’s network for onward billing to a PSTN network.

A Cloud PBX

So now we have an understanding of the difference between hooking your phone directly up to a SIP trunk or indirectly via an on-site PBX, what’s the difference with a cloud PBX? The difference is literally nothing more than the location of the PBX service. In the first example we looked at the PBX belongs to the customer and they are responsible for all of the maintenance and upgrades for their chosen system. By contrast, with a cloud phone system, the VoIP provider runs the PBX service as part of their network and the customer only has to connect their phones to the PBX “in the cloud”.

Here at Orbtalk we are more than happy to cater for both types of customer. Some companies that we deal with have their own IT departments with Cisco professionals that are more than capable of running their own PBX service. In that scenario we would normally recommend that the customer just buy a SIP trunk product to provision on their own PBX and take advantage of our great rates for national and international dialling.

A network diagram showing SIP devices connected to a Cloud PBX
A network diagram showing SIP devices connected to a Cloud PBX

With other companies we deal with, their focus is in another discipline, such as marketing or recruitment, and they are don’t want to manage a technical solution themselves. For this type of company we strongly recommend they take advantage of the convenience of our cloud phone system product and let us to do the hard work. All you need is a web browser and one or more soft or hardware SIP phones and you can be up and running in minutes.

Not got an account yet?

No problem! Just head over to our Cloud PBX or SIP Trunk pages to learn more about our platform

Apple Home - Home Automation from your i-device

We are happy to supply and install Home Kit devices by Apple and Others.

Get in touch for more info.

















*Apple Home name and HomeKit logo maybe registered as a Trade Mark by Apple inc.


It's Time to Kick good Ol' BT into touch !

With our Cloud Telecoms packages, you can save on line rental and call charges.

Choose from a simple SiP Line - connected to a Cordless or desk phone, or go all-out and have a fully functioning telephone system with loads of high-end features, all in the cloud.

Please remember, you will still need a BT land line, purely to carry the Broadband service the Cloud Telephony Packages, works with,
and, we do offer a saving there, a Data Only PSTN line. 
It does have a BT type Geographic number, that can still receive calls if required. However, it is Out Going Call Barred, so any calls out would be on the Voip or SiP systems, below.

Note also, any existing BT numbers CAN be transferred (ported) in, so when you make your Outgoing calls, they will give your old line number out as the caller ID.

Of course, you are going to need excellent 'Business Class Broadband' to run your system on, and we provide that too, as either ADSL or FTTC  services.

If you are a One - Person business, working from home, then a SiP trunk would be the way to go.

If there are 2, 3 or more of you working in an office, and you want to be able to transfer calls between phones, and have all the 'Bells and whistles' of a Modern, High-tech cloud based system, then a Cloud Hosted PBX is the way to go.

Both services you can manage using your Portal, from an Internet Browser.

You need a SiP / VoIP phone to connect to this service (or a Samsung 7030 on site phone system from us) SiP and VoIp Phones

 If you want to know more about the technology we and our Telecoms Partner  **, use read more here and  Compare SiP Trunk and Cloud PBX

For expert advice and to discuss your requirements, please get in touch NOW

 All prices are PLUS VAT

Sip Trunk (12 mnth contract)      
setup  £  15.00    
Per month per trunk  £    5.00    
Phone number  £    1.00    
Total per month  £    6.00    
Cloud pbx      
Voip Extension  £    7.99    
Phone number number   £    1.00    
Total per month  £    8.99    
Port-in BT number (10 to 30 days to complete)  £  35.00    
Call costs      
Destination Day Evening Weekend
UK Freephone 0 0 0
UK Geographic 0.009 0.009 0.009
UK H3G 0.075 0.075 0.075
UK O2 Mobile 0.075 0.075 0.075
UK Orange 0.075 0.075 0.075
UK T Mobile 0.075 0.075 0.075
UK Vodafone/Truphone 0.075 0.075 0.075
All rates are shown in GBP per minute. For example:      
 > 0.01 is 1p per minute      
Please note that for calls to Non-Geographic Call Services numbers (084, 087, 09, 118) our access charge is 5 pence per minute in addition to the cost quoted by the owner of the number.      
So, for example, if you make a 90 second call to a destination billed in 1 second increments, you will be charged 1.5 times the advertised rate as it is 1.5 minutes long.      

There is a minimum call charge of 0.5 pence/half a penny.

All above are PYG based, Calling packages ARE available

BT - type PSTN  Line,  Data Only (OCB)      
Install  £  75.00    
Per month  £  14.99    
 {convert LLU to PSTN } i.e. take over LLU line Only if you want  £  75.00    
 to Port a Number you have had on LLU with sky or Talk Talk      
Broadband - Per month      
Setup / activation (ADSL only) 1 Month + 1 month's Notice.  £  44.00    
ADSL 25Gb  £  12.95    
Unlimited adsl  £  18.95    
FTTC* no set up fees, Minimum 12 month contract  1 Year  2 Years  
FTTC* 50Gb  £  27.50  £  26.50  
Unlimited FTTC  £  32.50  £  31.50  
Over use of 25 or 50GB is charged at £1.50 per Gb      
All Broadband comes with Fixed (static) IP  £ 0.00    
Optional Annex M, sacrifices a bit of D/l speed for faster uploads £11.00   Per month


* Needs VDSL / FTTC Router, By Draytek, supplied by US 

 Call Packages, if you don't want PYG

** About our Cloud Partner

Our Cloud telecoms Partner is a UK-based Voice over IP (VoIP) business telephony provider, with presence and customers in more than 45 Countries around the world.

Founded in May 2005, we have been delivering VoIP solutions to businesses for over 10 years. With more than 22,000 customers, encompassing every type of business from start-ups and freelancers, to some of the largest blue-chip corporates, we have achieved steady and consistent growth as the market has developed.