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SIP

Connect your PBX


Great call quality

Sound quality is improved through our engineered core network & use of the latest codecs.

Stable & Reliable

Years of core up time is expected and delivered by careful engineering & a team dedicated to delivery.

Instant Provisioning

Need more voice channels? Want to order 100 London numbers? Get them instantly via the Voiceflex portal.

Connect your PBX to any number, anywhere, anytime.

SIP based services provide flexibility & leverages your IP infrastructure. Using our network to deliver calls and services when and how you want them. Logic within the Voiceflex network responds and protects to changes from either loss of service or outage.
What is a SIP?

A SIP Trunk is a facility provided by Voiceflex that allows the placing of outbound calls and the receiving of inbound calls using an internet connection, rather than using an ISDN line. Calls to and from the PSTN are supported. They are fast becoming the standard technology that allows businesses to make and receive telephone calls without the need for an expensive ISDN circuit. The Quality of Service (QoS) has contributed to its increasingly widespread adoption. Session Initiation Protocol (SIP) is used to set-up and 'tear-down' telephone calls over IP networks, including the internet. It is this VoIP protocol that is most widely supported by modern devices, including IP-enabled PBXs.

Why use it?

Having separate voice & data networks is a legacy from the technology used for voice and how data connectivity has grown to provide huge amounts of throughput for everyday communication. The switch from voice networks carrying data, to data carrying voice is a reconvergence of voice & data after a 20 year split. As the withdrawal of ISDN has been announced, voice networks move more and more towards SIP. We began this move 10 years ago, as it appeared obvious that true convergence was always going to happen. Voice & data convergence reduce cost and enables better functionality, bringing modern day flexibility to voice.

Numbers - UK & International

Voiceflex has millions of UK numbers covering the whole of Great Britain. All ready to instantly provision and commission onto your PBX. Need international numbers? They can also be ordered on our portal and delivered by SIP.

Number Porting

Moving location or just want to move to SIP? You can keep all your numbers which will be moved over to Voiceflex. We realise your numbers are important to you, so a dedicated provisioning team look after the process.

Fraud Detection

Vital for any business with call traffic due to the risk of fraudulent activity within the industry which is not just limited to SIP. Fraud is not new to the telecoms industry but Voiceflex's approach to managing the risk of fraud is. Included in the price of a SIP Trunk are two of the best methods in operation in the market today. We haven't eradicated fraud but we have provided piece of mind that should you be the target of fraud your Voiceflex account will warn you and automatically be suspended. More on fraud.

Auto Failover & Disaster Recovery

If your PBX doesn't respond or register regularly Voiceflex will automatically route the call to an alternative number landline, mobile or PBX. If the customer has 100 DDI numbers Voiceflex can route each individual number to a different number. Find out that your PBX is down before your customers do. Monitoring and recovering from a number of voice issues can easily be setup on the Voiceflex portal.

FAX

The core network supports T.38 fax protocol to end user devices. If you need to use T.38 please let us know and we will enable the configuration for you at no extra charge. If your PBX does not support T.38 you may experience problems sending and receiving faxes over VoIP lines. Voiceflex are able to offer a Fax2email service which will allow you to receive faxes direct to your email inbox.

Call Recording

All in and outbound calls are recorded, saving the expense of on-site call recording equipment. Once your lines have been added to the recording, you will be provided with portal account to access all recording and down load when and if required. Simple and easy to administer and use.

Threat Detection

Every time your PBX registers, we scan your system for threats. We are trying to find security threats before hackers do. Coupling threat and fraud detection provides an outstanding level of comfort.

Convergence

Allowing all types of communication; voice, data & video to use the same network has been around for many years. The efficiencies can be great, but it must be integrated correctly. Voiceflex have a strong background in converging your network.

Delivering SIP to the Channel