SIP Trunking

SIP Trunking  
£ 2.00 monthly fee
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  • Enterprise level SIP Trunks
  • Multi-node network redundancy
  • Fully featured Cloud PBX
  • Web Browser/WEB GUI Administration
  • SSH/CLI Administration
  • 99.999% System availability and Reliability
  • Real time billing
  • Daily CDR reporting downloads
  • Low international call rates to other countries
  • Ready for integration with MS Outlook, Sugar CRM Salesforce, and customer custom CRM systems
  • Up to 84% cheaper than traditional BT ISDN lines
  • We are so convinced that you will love the service, that we offer you a 30 Day Money Back Guarantee.

Business VoIP Call Packages for Shared Users

We believe we are the cheapest business VoIP provider in the UK, our mobile prices start from just 3p a minute.

Package Name Destinations Included Monthly Costs
500 UK Landline Minutes Inclusive shared minutes to 01 & 02 destinations £4.50
1000 UK Landline Minutes Inclusive shared minutes to 01 & 02 destinations £8.00
2500 UK Landline Minutes Inclusive shared minutes to 01 & 02 destinations £17.50
5000 UK Landline Minutes Inclusive shared minutes to 01 & 02 destinations £30.00
250 UK Landline & Mobile Minutes Inclusive shared minutes to 01, 02, UK mobiles on all major UK mobile networks (Vodafone, O2, EE, Three, Virgin Mobile (EE), Asda Mobile (EE) and Tesco Mobile (O2)) £10.62
500 UK Landline & Mobile Minutes Inclusive shared minutes to 01, 02, UK mobiles on all major UK mobile networks (Vodafone, O2, EE, Three, Virgin Mobile (EE), Asda Mobile (EE) and Tesco Mobile (O2)) £20.00
1000 UK Landline & Mobile Minutes Inclusive calls to 01, 02, UK mobiles on all major UK mobile networks (Vodafone, O2, EE, Three, Virgin Mobile (EE), Asda Mobile (EE) and Tesco Mobile (O2)) and 73 selected countries £37.50
2500 UK Landline & Mobile Minutes Inclusive shared minutes to 01, 02, UK mobiles on all major UK mobile networks (Vodafone, O2, EE, Three, Virgin Mobile (EE), Asda Mobile (EE) and Tesco Mobile (O2)) and 62 selected countries £87.50
5000 UK Landline & Mobile Minutes Inclusive shared minutes to 01, 02, UK mobiles on all major UK mobile networks (Vodafone, O2, EE, Three, Virgin Mobile (EE), Asda Mobile (EE) and Tesco Mobile (O2)) and 62 selected countries £162.50
10000 UK Landline & Mobile Minutes Inclusive shared minutes to 01, 02, UK mobiles on all major UK mobile networks (Vodafone, O2, EE, Three, Virgin Mobile (EE), Asda Mobile (EE) and Tesco Mobile (O2)) and 62 selected countries £300.00
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Business SIP Trunking

Business SIP trunking is a service that enables your company to operate a selection of telecommunications systems over your IP network, and offers a number of benefits. From cheaper international call costs to improved business flexibility, a Disaster Recover strategy to give access to an increased quantity of numbers, business SIP trunking from Xinix World can enhance the way your business stays connected.

Our business SIP trunks represent the latest in telecommunication technology, acting as a more affordable alternative to ISDN30 line rental and internet services while retaining a level of performance that is high in flexibility and can be tailored to your own specific needs. We have highlighted many benefits in our report SIP vs ISDN click here to read more. In addition, we provide a managed service to cover IP connectivity and number management, ensuring that business SIP trunks from Xinix World deliver a complete communications solution.

Visit our information page on what is onsite PBX?

As a sip trunk provider in the marketplace, we have experienced and knowledgeable engineers to discover exactly how SIP trunking can benefit your business today. Please contact us with any queries that you have with SIP trunks and their reliability

A few words from our users

UK Rates

Peak: Mon-Fri 8am-6pm, Off-Peak: All other times

Cost per minute

Off Peak p
Peak p

International Rates

Peak: Mon-Fri 8am-6pm, Off-Peak: All other times

Cost per minute

Landline p
Mobile p
Connection
Fee
p

Terms

  • Rate to US updated 30th April 2014.
  • All other rates updated on 23rd June 2014
  • All prices are quoted in pence per minute (excluding VAT)
  • Calls are billed per second, rounded to the nearest whole pence (minimum 1p)

Reliable UK SIP Trunking

  • Save on business calls

  • Cheaper alternative to ISDN30e solutions

  • More minutes for less

  • Guaranteed call quality

  • Retain your existing telephone numbers

  • Perfect for all Disaster Recovery requirements

SIP trunking explained

Session Initiation Protocol – or SIP – is a signalling communications protocol commonly used by internet telephony service providers (ITSP) to deliver voice and video calls over IP networks. It both establishes and closes calls over a network, and works alongside other protocols in transporting thousands of data packets containing audio and video information. Unlike such services as Skype, business SIP trunks provide ISDN30e quality – far superior in terms of performance and stability.

Quality assured

This improved quality is assured thanks to the manner of delivery; each IP data packet arrives in the correct order and without delay, one after the other. Thanks to SIP trunking services from XINIXWORLD, this steady stream of delivery means that packet loss, time delays, and interruptions in delivery are never experienced. But how do we achieve this?
If you’ve ever experienced delays or problems in communication over IP, the most common issue stems from your internet service provider being unable to guarantee that your data will be forwarded onto your ITSP without delays. Instead, it’s often the case that your data will pass through a number of networks before finally reaching your ITSP, therefore deteriorating the quality.
With XINIXWORLD, there are no such issues. As a provider of all the services needed for successful communication, there is no delay and no compromising in quality. Our SIP trunking services ensure the same ISDN30e quality, along with the ease and value for money to keep your business at the forefront on telecommunications.

Selecting Data Circuits

To fully achieve the quality calls you need, it’s important you support your network with the right data circuits. Standard ADSL is ill-equipped for the delivery of voice data, not least when a congested network can cause significant disruption to your calls. Instead, we recommend investing in either an ethernet circuit, whose stability can accommodate a number of simultaneous calls, SDSL, SDSLM, or Voice-Approved ADSL.
Simply contact XINIXWORLD today to discuss the best option for your business.

The numbers you need

One of the main advantages of choosing business SIP trunking from XINIXWORLD lies in the ability to have numbers from the dialling codes you choose delivered direct to your office, regardless of location. The ability to centralise numbers from such diverse locations as London, Manchester, Birmingham and Glasgow to a single hub ensures that establishing a nationwide presence for your company is simple. Just specify the dialling codes you desire, and leave us to do the rest.

Disaster Recovery

Telephony downtime can damage both the finances and reputation of your business. With Session Initiation Protocol (SIP), there is a Disaster Recovery strategy ready to support you should the worst happen.
The first level of resilience in SIP trunking Disaster Recovery is the ability to reroute calls to a backup IP address and/or location. The second level is the ability to divert calls to backup ISDN30e or local telephone numbers on a Direct Dial In (DDI) to DDI basis. With such means of resilience available, there is no reason for users to even be aware of any issues.
You can discuss your Disaster Recovery options with our engineers today. They will be happy to talk you through the full selection of available services.

Why XINIXWORLD SIP Trunks?

  • We operate our own core network infrastructure to support SIP trunk services.

  • We supply a full array of components to connect your system via SIP trunks, and take responsibility for delivering your service from the day you order.

  • We can provide telephone numbers from areas throughout the UK, routing them through to a single office location.

  • We deliver compatibility with a wide range of SIP devices from a number of manufacturers.

Cost Comparison

Number of lines/Trunks BT ISDN 30 Xinix SIP Trunks Saving (%)
10 lines with 100 DDI numbers £212.31 per month £125.00 per month 41%
30 lines with 200 DDI numbers £602.06 per month £275.00 per month 54%

As the telecommunications industry continues to evolve, the need for businesses to stay abreast of the most cost-effective solutions is essential. As more advanced technology enters the marketplace, comparing the benefits against traditional and popular methodologies enables you to identify precisely where you can save money in telephony.

Session Initiation Protocol (SIP) trunking is one of the latest telecommunications technologies to become more and more common among businesses looking to benefit from efficient and reliable voice, video and rich media applications. As its adoption becomes more prevalent, the marketplace once dominated by traditional ISDN PRI circuits has rapidly evolved.

But how does SIP trunking compare to the benchmarks set by ISDN PRI connections? And how do the cost savings and quality of performance compare? At XINIXWORLD, we’ve identified the key areas for comparison, and highlight how and where SIP trunking represents the perfect choice for unified communications.

Benefits of SIP trunking

  • Cost savings: Thanks to multi-modal communication capability, SIP trunking enables you to save more that 30% on monthly telecommunications costs.
  • Trunk aggregation: By centralising and eliminating redundant connections, you are able to use idle connections in one location for calls at another, thereby offering increased flexibility over traditional PRI circuits.
  • Flexibility: Depending on the needs of your organisation, the ability to add or reduce connection capacity is simple, thereby increasing the flexibility of the service you provide.
  • Quality: By keeping communications data on pure IP connections as opposed to T1 PRI connections, SIP trunking offers improved voice and video quality, delivering almost HD-like audio.
  • Simplified billing: By aggregating all the voice and data services into one product, you can take advantage of reduced administration with simplified billing.

At XINIXWORLD, we aim to offer the very best products and the very best advice. As such, we’ve conducted a comparison between SIP trunking and PRI (primary rate interface), identifying where the former’s ability to circumvent the need for local PSTN gateways and costly ISDN BRIs/PRIs can help save you money.

Circuits/hardware

PRI: All connections are physical, requiring manual connectivity and expensive termination hardware.

SIP trunks: All connection are virtual, limited only by bandwidth available. Session Border Controllers (SBC) may be required for security and come at an additional cost.

Scale/growth

PRI: Growing the network requires the installation of new circuits and additional hardware. For PRI, the increment is 23 voice channels.

SIP trunks: Easily scalable, a quick software configuration can add new channels and can offer automatic and on-demand burst capabilities.

Backup/redundancy

PRI: The provision of backup circuits to remote sites in an IPT-distributed architecture can negatively impact ROI. The only way to accommodate hardware loss is to structure excess capacity with associated costs.

SIP trunks: Automatic IP re-routing enables the distribution of PSTN connectivity to sites with limited or network redundancy. It can also be designed to retain PSTN reach in the event of hardware loss.

Cost

PRI: The cost of PRI is typically on a per circuit, per month basis, with an increase in voice channel requirements available in fixed increments.

SIP trunks: Various pricing models – such as on-demand – are available, with the cost significantly lower in comparison to PRI circuits.

Capacity planning

PRI: Due to the need to arrange installation of circuits and termination hardware, any additional capacity requirements must be planned well in advance.

SIP trunks: While lead time is always important, extra capacity can often be added with a simple software upgrade. In addition, it is often possible for providers to accommodate temporary burst capabilities for periods of increased activity.

Disaster recovery/business continuity

PRI: Diverting calls to alternative locations can be complex and expensive.

SIP trunks: Automatic call re-routing to pre-defined locations is simple, quick and affordable. Plus, SIP trunking is capable of accommodating diversity across service providers.

The telecommunications industry will continue to evolve and offer more and more products, each promising to deliver greater value and greater quality. With SIP trunking from XINIXWORLD, you can be certain that you’ll be receiving the very best the marketplace currently has available. Contact our team of telephony experts today to discuss how SIP trunking can benefit your organisation.