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A new IP-based alternative to traditional PSTN and ISDN lines, use your Internet or Leased Line connection to make and receive calls both online and directly to the PSTN network. A highly flexible service maintaining quality and business continuity, all at a significantly lower cost than ISDN.

What are SIP Trunks

How SIP Trunks Work

SIP Trunks are a virtual voice service made up of a number of SIP channels that are delivered to your premises over a Broadband or Leased Line connection, breaking out to the PSTN network allowing both ‘on-net’ and traditional telephone calls.

Most PSTN and ISDN numbers (including Direct Dial In (DDI) and non-geographic Number Translation Services (NTS)) can be easily ported across.

They are also compatible with most leading PBX systems so any business with an existing PBX can switch to using our service immediately.

The number of SIP channels your service can support is dependent on the bandwidth of your connectivity solution.

For less than four channels, a dedicated ADSL connection is sufficient, however for more than four, you will need an FTTC or Leased Line connection depending on the number of channels you require.

How SIP Trunks Will Benefit Your Business

Reduced costs

In addition to no signifi cant install, setup and maintenance/upgrade
costs, you will save up to 80% on line rental and typically up to 91% on
call costs compared to a traditional ISDN service. internal calls across
your organisation are completely free, even to international sites.

Full scalability

Unlike traditional ISDN services, the number of SIP channels you have can be scaled up or down without the need for any infrastructure changes, no matter the size of your business. As long as you have the necessary bandwidth to cater for the extra channels, we can instantly provide them upon request on a ‘pay as you grow’ basis. These can be on a temporary or permanent basis and are perfect for seasonal voice demands or tosupport periodic sales campaigns etc.

Seamless continuity

SIP Trunks offer complete number portability. Instantly re-route your calls to an alternative location if an emergency should happen, without incurring any call-forwarding charges and keep your existing numbers when moving out of an area.

Our SIP Trunk service can be used with your current handsets and PBX systems located on-site or hosted in our secure data centres.

SIP Trunks

SIP Trunks from I.T Communications enables you to make and receive calls and save up to 80% on existing Rental and Call Charges.

SIP Trunks can be installed on the 3CX PBX, FreePBX and most modern phone systems that support SIP Trunks.

Benefits of SIP Trunks

Monthly Call Tariffs with low call charges
With inclusive call Minutes per month.
Easy Upgrades / Downgrades During Contract
Flexibility to add additional phone numbers, SIP Channels.
FREE Number Porting
Port your existing telephone numbers over to us and only pay for the rentals.
Easy Invoicing and Payments
Invoices are sent out via email (PDF Attachment) on the 1st of every month. Payment is then automatically collected by Direct Debit.
Call Credit Limits
all our Pay Monthly Accounts will be assigned a call credit limit so you do not have to worry about doing manual call credit top-ups and any calls will be invoiced on 1st of every month.

Multiple feature rich virtual phone lines to make and receive concurrent phone calls.

Automatic Failover
In the event that your phone system is offline due to hardware failure, Power Cut or even Internet outage. All inbound calls can automatically be forwarded to an alternative telephone number of your choice.
SIP Trunk Cluster across two Data Centres
Due to our cluster being spread across Data Centres the likely hood of us having a total outage affecting customers is reduced. In fact, since adding our new generation cluster back in September 2015, we have not experienced a single outage on our network.
FAX to Email and Email to FAX Service

SIP Unlimited + Bolt-Ons

SIP Unlimited

Number of Channels
Unlimited
Call Tariff
Standard
Contract Term
12 Months
Minutes Included
None
Included Phone Numbers
10 UK Standard Number
Free Number Porting
Yes – UK Numbers Only
Call Barring
Inbound/Outbound
Phone System Compatibility
3CX / Asterisk etc

SIP Trunks with Inclusive Call Minutes

SIP 1000

Number of Channels
1 to 1024
Call Tariff
Gold
Contract Term
12 Months
Minutes Included
1,000 per SIP Channel *
Included Phone Numbers
10 UK Standard Numbers
Free Number Porting
Yes – UK Numbers Only
Call Barring
Inbound/Outbound
Phone System Compatibility
3CX / Asterisk etc

SIP 1500

Number of Channels
1 to 1024
Call Tariff
Gold
Contract Term
12 Months
Minutes Included
1,500 per SIP Channel *
Included Phone Numbers
10 UK Standard Numbers
Free Number Porting
Yes – UK Numbers Only
Call Barring
Inbound/Outbound
Phone System Compatibility
3CX / Asterisk etc

Standard Tariff (SIP Unlimited)
UK Landlines (01,02) £0.01p per minute
UK Mobiles from £0.09p per minute

Gold Tariff (SIP 1000 & SIP 1500)
UK Landlines (01,02) £0.01p per minute
UK Mobiles from £0.07p per minute

SIP Unlimited
Includes Unlimited SIP Channels, 10 UK Standard Phone Numbers for £16.00 per month.

* Inclusive Call Minutes (SIP 1000, & SIP 1500 + SIP Unlimirted Bolt-Ons)
Include UK Lanandlines (01, 02) UK Mobiles (Vodafone, O2, Orange, EE, Three Mobile)

Inclusive Minutes

For SIP Trunks that come with inclusive call minutes, these are deducted on a per second bases from your allowance.

If you exceed the allowance, then additional calls will be chargeable at the Gold Tariff call rates.

Payment and Contract Terms

Invoices are issued monthly and payments are collected via Direct Debit.

Unless otherwise agreed, all contract terms are for a mininium period of 12 months.