SIP/IAX2 Trunks can be purchased for use with your corporate enterprise VoIP server. Simply provide us with the IP address of your server and we can provide your numbers within an hour.We cover all areas of the UK and thousands of towns and cities across the world.
This services is extremely scalable, simply add additional trunks to increase your capacity. Each trunk supports 2 concurrent calls. We have set up notes for Trixbox, Elastics, AsteriskNOW, Asterisk, Lync, and Avaya.
go back to previous pageYou can also purchase outbound SIP/Trunks to compliment your inbound SIP/Trunks.
This service will cost:
Set up fee: Free
Monthly cost: £4 per month + VAT per SIP/Trunk
Cost to receive calls via VoIP: FREE
Divert to other location 1.25p per minute + VAT during the daytime and 1p + VAT during evenings and weekends change to red and at the bottom (cheaper tariffs are available by using minute bundles please see detailed costs)
Divert to a UK mobile: 9p per minute + VAT during the day, 8p per minute + VAT during evenings and 6p per minute + VAT during weekends (cheaper tariffs are available by using minute bundles please see detailed costs)
Telephone Number Lookup
Examples of use
You you need additional numbers for your on-site PBX? We can provide you SIP/IAX2 Trunks to increase your capacity and provide additional customer contact telephone numbers from all over the world.
SIP/IAX2 Trunks are used with on-site enterprise PBXs. We can provide SIP Trunks simply to provide extra capacity or to provide you with additional telephone numbers from all over the world.
These costs are charged on a per second basis. A minimum charge of 1.5p + VAT per call.
(When used for outbound calling or as a fallback route via PSTN)
- Divert Calls to a UK Landline £0.0125 (1.25p) + VAT Per Minute Peak and £0.01 (1p) + VAT Per Minute Off Peak and Weekends
- Divert Calls to a UK Mobile £0.09 (9p) + VAT Per Minute Peak and £0.08 (8p) + VAT Off Peak and £0.06 (6p) +VAT on Weekends
- Divert Calls Internationally. Please refer to the grey box above
- For details on our low cost international destinations, please click here
Memorable Number Fee (Optional)
£50, £75, or £100 + VAT Cost depends on the number chosen. We can advise on available numbers and pricing when you call us.
Discounted Minute Bundles (Optional)
Unlike other providers we change the same rate for your minutes as the rate contained in your bundle.
|Number of Minutes||Monthly|
|500||£5.00 / month|
|1,000||£8.00 / month|
|2,000||£12.00 / month|
|2,500||£15.00 / month|
|4,000||£20.00 / month|
|5,000||£25.00 / month|
|10,000||£40.00 / month|
|20,000||£80.00 / month|
|25,000||£87.50 / month|
|40,000||£100.00 / month|
|50,000||£150.00 / month|
|100,000||£250.00 / month|
|Number of Minutes||Monthly|
|250||£20.00 / month|
|500||£30.00 / month|
|1,000||£55.00 / month|
|2,000||£100.00 / month|
|4,000||£160.00 / month|
|10,000||£350.00 / month|
|20,000||£600.00 / month|
|30,000||£900.00 / month|
|40,000||£1,200.00 / month|
|50,000||£1,500.00 / month|
|60,000||£1500.00 / month|
|70,000||£1,750.00 / month|
|80,000||£2000.00 / month|
|90,000||£2,250.00 / month|
|100,000||£2,500.00 / month|
|Number of Minutes||Monthly|
|500||£5.00 / month|
|1,000||£9.00 / month|
|2,000||£16.00 / month|
|4,000||£25.00 / month|
|10,000||£50.00 / month|
|20,000||£80.00 / month|
|30,000||£120.00 / month|
|40,000||£160.00 / month|
|50,000||£200.00 / month|
|60,000||£240.00 / month|
|70,000||£280.00 / month|
|80,000||£320.00 / month|
|90,000||£360.00 / month|
|100,000||£400.00 / month|
All prices exclusive of VAT
Once the minutes of a UK landline bundle have been exhausted, additional minutes will be charged at the same bundle pence per minute rate.
†UK & Int’l landline bundles do not include mobile and premium rated routes.
If you have International Landline Minute Bundles for Multi User VoIP, Enterprise VoIP Outbound SIP or Enterprise VoIP Outbound IAX standard rate calls to the above countries are included in your monthly minutes. Please note some routes in the USA are charged at a premium rate and these will not be included in your International Landline Minute bundle, to find out specific call charges enter the full number in our lookup tool.
Hardware Costs (Optional)
Software Costs (Optional)
Add-on Features Costs (Optional)
SIP/IAX2 Trunks Terms and conditions
1.2 Our registered office and correspondence address is 36 Duncroft Windsor Berkshire SL4 4hh.
1.3 You can contact us by email.
1.4 We explain in the headings what each clause covers. These headings are for guidance only and are not intended to be legally binding.
1.5 These Conditions take precedence if inconsistent with the material on our Website.
1.6 The following have particular meanings in these Conditions:
|“Acceptable Use Policy”||means our guidelines for acceptable use made available at http://callsurenumbers.co.uk which may be amended from time to time;|
|“ADSL Broadband Services”||means the data connectivity Services available for purchase from Callsure which allows authorised users to access the public Internet over conventional copper telephony cabling and includes Advanced Broadband, Premier Broadband, and Premier Plus Broadband packages or any other such package or service (including replacements or substitutions to the current offering) which Callsure may make available from time to time. For the avoidance of doubt, Ethernet First Mile (EFM) and Fibreline circuits are not ASDL services;|
|“Agreement”||means the General Terms and the Specific Terms applicable to the Services which you have chosen together with the Fair Use Policy and any other documents referred to herein;|
|“Cancellation Period”||means the period in which You may terminate the contract without incurring obligations and/or associated charges as set out under statute;|
|“Data”||includes information, documents, text, software, music, sound, photography, messages, and other material of any kind in any form;|
|“Goods”||means the goods described on the Website and which we agree to sell to you;|
|“Internet”||means the global data network comprising interconnected networks to which we are connected and provide access to you via the Services;|
|“Minimum Period”||means the charges and fees levied by Callsure to You for the supply of Services for an initial period of time starting from the Start Date for the relevant Callsure Service. These charges apply regardless of whether you terminate the Agreement prior to the expiration of that period and they will continue to accrue and be owed by You for the remainder of the period;|
|“Personal Data”||means Data about any identified or identifiable living person;|
|“Registry”||means either Nominet UK Limited, CentralNIC Limited or Tucows Inc, or any other domain names registry that we choose to use from time to time;|
|“Regulations”||means the Consumer Protection (Distance Selling) Regulations 2000;|
|“Services”||means the services described on the Website (including access to the Website and Control Panel) and which we agree to provide to you;|
|“Start Date”||means when either (i) We have sent you confirmation by email that we have activated the Service(s) or (ii) when You first start to use the Service(s), whichever of these happens first;|
|“Website”||means our web presence at www.callsurenumbers.co.uk (including any associated website, web-page, or sub-page of the Callsure platform) and other locations at which we advertise from time to time.|
2.2 Any renewal of the Services will in any event be subject to our then current Conditions.
3.2 For the purposes of the Regulations:
3.2.1 The supplier shall be Callsure Limited;
3.2.2 The address of the supplier shall be the correspondence address as set out in clause 1.2 above;
3.2.3 Prices on the Website are updated periodically and cannot be guaranteed for any period of time and every effort is made to ensure prices are correct at the point at which the consumer places an order.
3.2.4 Any complaints should be sent in writing to the supplier’s correspondence address.
3.3 A consumer will, subject to any exceptions or exclusions set out in the Regulations, be entitled to cancel the Agreement by serving a written notice of cancellation on us at any time during the following Cancellation Periods:
3.3.1 In the case of Goods, within seven working days after the day on which the consumer receives the Goods;
3.3.2 In the case of Services, within seven working days after the date you enter into a contract with us.
3.4 In the event of cancellation by the consumer Goods should be returned to the supplier’s correspondence address. The consumer will be liable for the costs of returning such Goods or the costs of the supplier in recovering such Goods unless the consumer has a right to reject the Goods under a term of these Conditions or under statutory right (including any right under the Unfair Terms in Consumer Contract Regulations).
3.5 The consumer will not be entitled to cancel any contract for the supply of Services once the performance of the Services has begun.
3.6 Please note that we begin to perform certain Services, such as registration or renewal of certain domain names and website hosting, within 24 hours after you place your order.
Cancellation of services
- We are a reseller of services from other suppliers
- Cancellation must be done through your service provider please see their terms and conditions on their website
- It is your responsibility as a subscriber to cancel your services directly with the service provider you are subscribed with. We are not able to cancel your subscription in any way.
4.1.1 keep your username and password secure (and we may change these at any time for good reason);
4.1.2 if requested use your username and password when giving instructions (and we are authorized to comply with instructions containing your username and password);
4.1.3 take reasonable steps in respect of matters in your control to minimize any risk of security breaches in connection with the Services;
4.1.4 notify us of any unauthorised access to your account which you believe may affect the overall security of our systems; and
4.1.5 comply with our security checks and authorise us to run automated scanning checks from time to time to help identify possible security vulnerabilities in your hardware and/or software configurations in connection to which Callsure Services are supplied. The information visible to us when running these checks is limited to what would be available to any other user on the public internet and these checks are carried out purely with a view to improving your security. Any associated Data visible to us shall be used solely for determining levels of security and shall be handled in accordance with clauses 13 and 14 of these Terms and Conditions.
5.2 However, we do not guarantee:
5.2.1 that the Services will be uninterrupted, secure or error-free; or
5.2.2 that any Data generated, stored, transmitted or used via or in connection with the Services will be complete, accurate, secure, up to date, received or delivered correctly or at all.
5.3 We do not provide a back-up of your Data or guarantee the integrity of your Data; however, we will use our reasonable endeavours to provide copies of Data for disaster recovery purposes.
5.4 We may have to suspend the Services for repair, maintenance or improvement without prior notice. If so, we will restore them as quickly as is reasonably practicable.
5.5 Specific Conditions on the Provision of Telephony Services and Emergency Calls
By purchasing our Telephony Services (VoIP) you confirm that you understand that our services:
5.5.1 may not offer all of the features you may expect from a conventional phone line;
5.5.2 may sometimes be unavailable as a result of things over which we have no control, for example, the weather, power disruptions and failures of your internet service provider (ISP) or broadband connection and you understand that in such circumstances all services (including 999/112 public emergency call services) will also be unavailable;
5.5.3 Where you use Callsure VoIP Goods and Services not in conjunction with Callsure broadband Goods and Services (this typically being a router and broadband connection), there may be a greater likelihood of connectivity problems. These problems may affect quality of service, as well as reliability and robustness of service available via your Callsure VoIP package.
5.5.4 Connectivity to the public emergency services is subject to 5.5.2 above and, the phone number and location details will be provided only to the extent that is technically feasible. As a result, you may have to provide your location information and phone number verbally to the operator.
5.5.5 Where you use your Callsure VoIP service outside of mainland England, Wales, Scotland and Northern Ireland, you may not be connected to the domestic emergency services upon dialling the appropriate emergency number.
5.5.6 For each Callsure VoIP extension or trunk that you utilise, you must register with Us the physical location where you will be using the Service. Your initial location will be registered as a part of subscribing to Callsure Services. It is your responsibility to maintain the accuracy of your location address via your online account if there are any changes. If you do not update us with changes, it may or may not be possible for emergency operators and authorities to identify your location and phone number when you dial 999/112. When you dial 999/112 you will need to state your location and phone number promptly and clearly, as emergency operators and authorities may not have this information.
5.5.7 Emergency operators and authorities may or may not be able to identify your phone number in order to call You back if the call is unable to be completed, is dropped or disconnected, or if You are unable to speak to tell them your phone number and/or if the Service is not operational for any reason. Emergency operators and authorities may also not be able to hold your line open in the event that You hang up.
5.5.8 You agree to inform potential users of the Services of the above limitations and You understand and accept that you should always have an alternative means of accessing 999/112 emergency services.
5.5.9 If Callsure suspends or terminates the Service You may NOT be able to dial 999/112. In the event that You do not have any remaining credit on your Callsure account, You will still be able to make 999/112 calls.
6.1.1 Dates for Delivery and installation are estimated only and cannot be guaranteed.
6.1.2 Payment for Goods supplied by us is pursuant to clause 18.
6.2 Risk and Title to Goods
6.2.1 Risk shall pass to you on delivery, but the Goods shall remain our property until such time as full payment has been received.
6.2.2 You must inspect the Goods immediately upon receipt and raise a return under our returns management process by contacting technical support via email or telephone. Damaged or faulty Goods cannot be returned without a valid returns reference number.
Once we notify you that the Goods are ready for delivery or tending delivery of the Goods you shall agree to accept delivery of the Goods forthwith. If you fail to give proper instructions (a correct location being the minimum proper instructions) or to accept delivery as aforesaid you shall be deemed liable for all costs incurred by us as a result of such failure which shall become immediately due and payable on demand but such liability shall not affect your obligation to purchase the Goods or our right to damages for breach of such obligation.
6.4 Damage to Goods in transit
6.4.1 We shall have no liability in respect of Goods lost or damaged in transit unless and until you note such loss or damage on the delivery receipt and gives notice thereof to us and the carrier within five working days of delivery or shorter period as may be required by the carrier’s conditions of carriage.
6.4.2 Our liability in respect of Goods lost or damaged in transit shall be limited to replacing such Goods.
6.5 Guarantee and Exclusion of Liability for Goods
6.5.1 Goods supplied by us typically carry a 1 year guarantee provided by the manufacturer, unless otherwise stated.
6.5.2 You shall not be entitled to claim under the guarantee unless the Goods have at all times been stored and used in a proper manner in proper conditions in accordance with any instructions supplied as to their use and with normal practices relating to Goods of the type in question.
6.5.3 You shall give immediate notice to us of any defects in the Goods falling within the guarantee.
6.5.4 Our liability under the guarantee is limited to the replacement of the defective item or to the repair of any defect caused by defective workmanship. We shall not be liable for any loss of profits or damages or expenses occasioned by such defects.
6.5.5 Save as aforesaid we give no guarantee as to the Goods but we will use our best endeavours to secure for you the benefit of any guarantee, warranty or assurance provided by the manufacturer of the Goods.
6.5.6 We shall have no further liability in respect of the Goods or any other defects therein (including liability for negligence) and all conditions and warranties whether express or implied by law as to the quality of the Goods or their fitness for a particular purpose or as to the design, workmanship and manufacture thereof and the materials used therein or as to the validity of patents or licences or otherwise in any way are hereby expressly excluded except to the extent that this paragraph may be held not to satisfy any requirement of reasonableness imposed by the Unfair Contract Terms Act 1977 or any statutory modification or re-enactment thereof.
6.5.7 We shall have no liability for any information or advice given in connection with the supply of Goods.
6.5.8 Except to the extent that this paragraph may be held not to satisfy any requirement of reasonableness imposed by the Unfair Contract Terms Act 1977 or any statutory modification or re-enactment thereof we shall not be responsible for any injury, damage or loss caused directly or indirectly by the Goods whether as a result of their operation or use or otherwise and whether as a result of any defect therein or otherwise and the customer shall indemnify the Company against any claim ensuing from any such injury damage or loss.
6.5.9 Without prejudice to the generality of the foregoing we shall not be liable for any consequential loss including but not limited to loss of profits.
6.7 Sale or Return
Title to any Goods supplied on a ‘Sale or Return’ basis shall pass to the customer in accordance with Rule 4, Section 18 of the Sale of Goods Act 1979 but the risk in any such Goods shall pass to the customer in accordance with clause 6.2 hereof. You shall be deemed to have purchased any such Goods unless they are received by us within 30 days after delivery to you and at the expiration of such period full payment will become immediately due.
6.8.1 Where you receive Goods as a Consumer, pursuant to the Distance Selling Regulations, you are required to take reasonable care of Goods you intend to return whilst in your possession.
6.8.2 Where you receive Goods not as a consumer (that is, within the course of a trade or business) no Goods supplied by us shall be accepted for replacement without our prior consent. You must take reasonable care of such Goods whilst in your possession. This does not affect your statutory rights.
6.9 Overseas Customers
Unless otherwise agreed with us in writing you shall be responsible for all duties, levies, imposts, taxes or other liabilities arising on the exportation of the Goods from the United Kingdom and importation of the Goods overseas.
If you have a problem with the way we have sold, provisioned or delivered the service to you, you should:
In the first instance, telephone us on 01753 624121 or write via email. We aim to respond to you within 24 hours. Please ensure you retain the reference number for your conversation. Our customer service staff will do their utmost to successfully resolve any problems at that point. If, however, your problem cannot be resolved during the phone call, we will agree a course of action with you. If you remain unhappy with the way in which your complaint has been handed in the first instance, you may contact the Customer Service Manager via email mentioning your case reference number. They will respond and aim to resolve your complaint within 48 hours.
If the Customer Service Manager is unable to resolve the issue to your satisfaction, you may escalate your concern to the Commercial Director and again if unsuccessful, to the Managing Director by email. In both cases, they will aim to respond to you within 48 hours.
Please note that in all cases, we ask that you mention your incident reference number in all correspondence, and that you work with our management team to resolve your concern. In the unlikely event that your complaint has not been resolved by Callsure to your satisfaction within a period of eight weeks, or if during the process of investigating your complaint you believe the situation has reached a deadlock.
7.2 Porting compensation policy:
For customers taking telephony services from Callsure in their personal, non-business capacity, in the unlikely event that you port your telephone number(s) into Callsure and there is a qualifying delay constituting an abuse of the porting process, compensation may be available.
A qualifying delay is broadly defined as a customer’s number port failing to be successfully activated within one working day of the confirmed date of porting. This is the date on which the port is scheduled to be activated and will have been confirmed by Callsure in advance.
The level of compensation payable by Callsure to you for a qualifying delay is fixed at 1/40th of the Callsure porting fee for each working day by which the port activation is delayed. The compensation is payable in relation to each porting order submitted to and accepted by Callsure, regardless of how many numbers are included on that order and whether or not they were also subject to the delay.
Please note: compensation is not payable automatically and must be specifically requested by a qualifying end user within 30 days of the day on which the relevant number port was activated.
Please email to enquire whether compensation is payable.
8.2 You must provide us with up to date contact details of one or two named representatives with whom we are authorised to deal (including email addresses) and promptly notify us of any changes. We rely on this information for various reasons including the transmission of renewal notices and other important information concerning the Services.
8.3 You must comply with our Acceptable Use Policy and bring it to the attention of your authorised users.
8.4 You are responsible for all persons who use your username and password to access the Services, whether authorised or not, unless acting on our behalf.
8.5 There is a risk that Data generated, stored, transmitted or used via or in connection with the Services may be irretrievably damaged or lost if there is a fault or on suspension or termination. You must frequently back-up all such Data that you wish to save.
9.2 You must refrain from sending menacing, offensive, defamatory, obscene, indecent or abusive messages or telephone calls whilst using the Services.
9.3 You must not use or permit the usage of the Services in a manner that is inconsistent with any and all applicable laws and regulations.
9.4 You must not make available or upload Data via your use of the Services that contain a virus, worm, trojan or other malicious Data or download any disabling or harmful devices.
9.5 You must not use the Services to send bulk unsolicited commercial emails or telephone calls.
9.6 You warrant that your use of the Services will not infringe any third party intellectual property or other rights.
9.7 You must not embark on any course of action, whether by use of your website, telephone or any other means, which may cause a disproportionate level of activity (for example, causing mail bombs, denial of service attacks or encouraging large numbers of inbound phone calls) without providing us at least seven day’s prior notice in writing. If you give notice or we otherwise become aware of such disproportionate use we may:
9.7.1 move your service to a dedicated service and charge our then current rate as detailed on our Website; or
9.7.2 terminate some or all of the Services forthwith.
9.8 For an Internet Telephony Service, we consider the use of more than 2 concurrent channels per phone number to be a disproportionate level of activity.
10.2 You bear sole responsibility for all Content. We do not, and are not obliged to, check Content. Our rights to remove and take other steps in relation to Data are without prejudice to this sub-clause 10.2.
11.2 You hereby grant us the authority to act as your agent in relation to the registration of your domain name with a Registry.
11.3 Domain names that are not renewed will be cancelled.
11.4 With respect to renewal of domain names, we will:
11.4.1 notify you of any renewal notices received by us; and
11.4.2 use our reasonable endeavours to renew domain names which by the renewal date you have specifically asked us in writing to renew.
11.5 There is no charge for the transfer of your domain name to another Internet service provider. However you agree that we do not have to transfer your domain names to a new Internet service provider until you have paid all outstanding debts to us.
13.1.1 if we are required to do so by applicable law or competent authority; or
13.1.2 for the purposes of registration of domain names with a Registry; or
13.1.3 if it is otherwise permitted under these Conditions; or
13.1.4 if such Data is prohibited under these Conditions.
14.2.1 Data Retention
All Personal Data is retained and otherwise handled in a manner fully compliant with principle 5 of the Data Protection Act 1998.
4.2.2 Personal Data which is retained by Callsure
188.8.131.52 In relation to VoIP Services provided by Callsure, We store voicemail, call recordings, call data records, invite logs, invoices and received faxes.
184.108.40.206 In relation to web hosting Services provided by Callsure, We store home directories and web logs.
220.127.116.11 In relation to email Services provided by Callsure, We store POP3 / IMAP mailboxes, exchange mailboxes, mail logs and stale mailboxes – a stale mailbox being one where You have deleted the mailbox from the Control Panel but the emails and files remain on disk.
4.2.3 Period of retention of Personal Data
18.104.22.168 Call records will be retained for 12 months – voicemail , voicemail for old and new customers, received faxes and call recordings will all be kept for a period of 2 weeks.
22.214.171.124 In the case of email Services, mail logs will be kept for a period of 30 days.
126.96.36.199 In the case of web hosting Services, web logs are deposited each night in customer home directories, the extent being determined by the confines of normal user quotas.
15.2 Our liability in contract, tort (including negligence) or otherwise in connection with these Conditions for any one event or a series of events is limited to the price of the Goods, or 125% of the payment we received from you for the Services in the 12 months before the event(s) complained of.
15.3 In no event (including our own negligence), and even if we have been advised of the possibility of such losses, will we be liable for any:
15.3.1 economic loss (including, without limitation, loss of revenue, profit, contract, business or anticipated savings);
15.3.2 loss of goodwill or reputation;
15.3.3 special, indirect or consequential loss; or
15.3.4 damage to or loss of Data.
15.4 We have no liability for goods and services provided by third parties.
15.5 To the extent allowed by law, we exclude all conditions, terms, representations and warranties, whether imposed by statute or by law or otherwise, that are not expressly stated in these Conditions including, without limit, the implied warranties of satisfactory quality and fitness for a particular purpose. Consumers’ statutory rights are unaffected.
17.2 Payment for Goods may be made:
17.2.1 by Direct Debit, cheque, BACS, credit card or debit card; and
17.2.2 in advance or, if we agree to credit terms, within 14 days of our invoice.
17.3 Payment for the Services may be made:
17.3.1 monthly or annually, by Direct Debit, credit card or debit card; and
17.3.2 annually by Direct Debit, cheque, BACS, credit card or debit card; and
17.3.3 in advance or, if we agree to credit terms, within 14 days of our invoice.
17.4 Payment must be made without deduction or set-off.
17.5 All fees are non refundable unless otherwise stated.
17.6 All fees remain payable where we suspend the Services in accordance with these Conditions.
17.7 We may impose a credit limit on your account and/or require a deposit as security for paying bills.
17.8 For the avoidance of doubt, Services purchased which are subject to advanced payment (as clearly described on the relevant product page of the Website) and are not cancelled within the Cancellation Period are not refundable and associated monies shall be used by Us to discharge our administrative expenses arising out of the termination of the Agreement.
17.9 Non-payment of services:
17.9.1 Callsure reserves the right to stop your Services and delete your account if you fail to pay for any such Services within the required time under these Conditions.
17.9.2 When you purchase Services from us you will receive a welcome email and an accompanying invoice on that date (the ‘Purchase Date’). Payment for all purchased Services is due within 14 calendar days of the Purchase Date. Like all Communications Providers, we appreciate prompt payment from our customers.
17.9.3 If you do not make payment within that time, the payment will be classed as overdue. Once the payment is overdue by 2 calendar days, we will email you (any emails sent will be to your nominated email account) notifying you of this fact and inviting you to make payment as soon as possible. From then on, we will email you with payment reminders every 6 calendar days unless and until payment is made. You will also receive written notification of late payment by letter (which shall be sent to the postal address you registered when signing up for our Services) within 7 calendar days of payment being overdue.
17.9.4 If payment is still not received within 30 calendar days of the Purchase Date then your account and the Services will be placed on hold and will not be usable. This means you will be unable to use the internet or make telephone calls using the Services provided by Callsure.
17.9.5 If payment is still not received within 90 days of the Purchase Date, your account will be deleted and all Services will be incapable of reactivation.
18.2 Subject to clause 18.1, either party may terminate this agreement (as regards some or all of the Services) at any time for any reason by giving to the other 30 days written notice.
18.3 We may terminate this agreement (as regards some or all of the Services) or suspend some or all of the Services immediately on written notice:
18.3.1 if you breach any the terms and obligations under these Conditions and, if remediable, having received from us a written notice stating the intention to terminate these conditions if not remedied, fail to remedy the breach within 14 days;
18.3.2 if you are subject to a resolution for winding up or a petition for bankruptcy or liquidation or there is a proposal or you enter into any arrangement or composition with your or for your creditors or a receiver or liquidator or trustee in bankruptcy is appointed over you or any of your assets or any similar circumstances; or
18.3.3 if we are required to do so by a competent or regulatory authority.
18.4 On termination of this agreement or suspension of Services for any reason:
18.4.1 we will immediately stop supplying, and will terminate access to, the relevant Services. This may involve irretrievable damage to or loss of Data generated, stored, transmitted or used via or in connection with the Services and / or we may destroy any such Data;
18.4.2 all licenses granted by us to you will terminate;
18.4.3 any fees due remain payable and, if already paid, will be non-refundable unless you have cancelled this agreement in accordance with clause 3.1;
18.4.4 your accrued rights and liabilities will be unaffected.
19.2 This clause does not apply to Data which:
19.2.1 enters the public domain other than through breach of this clause;
19.2.2 is or becomes independently known to the receiving party free from any confidentiality restriction;
19.2.3 is required to be disclosed by applicable law or competent authority;
19.2.4 is reasonably disclosed to employees, suppliers or others for the proper performance of these Conditions;
19.2.5 is reasonably disclosed to professional advisers; or
19.2.6 we are otherwise permitted to disclose in accordance with these Conditions.
20.2 We shall send any notices in accordance with the most recent contact information which you have provided to us.
20.3 Notices may be sent by hand, recorded delivery, fax or email and shall be deemed to be received:
20.3.1 by hand – when delivered provided handed to a senior employee;
20.3.2 recorded delivery – five days after posting;
20.3.3 fax – when the sender receives an error-free transmission report; or
20.3.4 email – on the day sent unless the contrary is proved.
21.2 If any part of these Conditions is deemed void for any reason, the offending words shall be deemed deleted and the remainder shall continue in full force.
21.3 You may not assign these Conditions or subcontract or resell any of the Services without our prior written consent. We may assign these Conditions or subcontract any of the Services.
21.4 We shall not be liable for failure to perform or delay in performing any obligation under these Conditions if the failure or delay is caused by any circumstances beyond our reasonable control, including but not limited to failure of any communications, telecommunications or computer system.
21.5 No firm, person or company which is not a party to these Conditions shall have any right under the Contract (Rights of Third Parties) Act 1999 to enforce any provision of these Conditions.
21.6 The failure to exercise or delay in exercising a right or remedy under these Conditions shall not constitute a waiver of the right or remedy.
21.7 Nothing in these Conditions shall be construed as creating a partnership or joint venture of any kind between us.
However if you decide to move premises and do not want to continue with the maintenance costs of an on-site PBX, we can convert your SIP/IAX2 Trunks into either single user or multi user VoIP hosted services.
We are frequently asked by customers for advice on which IP PBX systems are compatible with our service. However, due to the vast number of systems and configuration options on the market, we are unable to make any recommendations or provide technical support for any IP PBX .
We will only support Enterprise VoIP queries relating to call quality issues and the configuration of a trunk in or trunk out.
We do have some setup advice that has been sent to us by our customers in the Enterprise VoIP section of our knowledge base, however please note that Callsure has not tested any of these configurations and they are made available for your reference only.
Which PBX systems could work?
The information below is collated from feedback from our customers. It is not intended as an exhaustive list of compatible PBX systems, and Callsure make no guarantees of accuracy for the information below. We are also unable to advise on configuration of any of the systems listed.
Our SIP trunks authenticate based on the phone number and IP address of your PBX. If your trunk requires authentication to make or receive calls you will need to purchase a Single User VoIP account and enter the username and password provided into your trunk configuration.
|PBX||Single User VoIP||SIP In||SIP Out||SIP In (with SBC support)||SIP Out (with SBC support)|
|AYC Telecom Ipcts||Y||N||N||n/a||n/a|
|MS Lync *||N||N||N||Y||Y|
* Please note that if you are attempting to run either a Microsoft Lync or Avaya PBX please ensure that you purchase SBC licenses which will allow our system to successfully route calls to your platform.
This package allows you to:
- Make and receive calls to your number by a VoIP device
- Accept missed calls to your system voicemail
- Divert to landlines and mobiles anywhere in the world
- Have any telephone number we supply display on any caller ID enabled phone
- Online account management
- Online call logs
- Service your account using direct debit, recurring credit / debit card mandate, manual card top up, bank transfer
- Low credit alerts
- Visa, Visa Debit, Mastercard and most other credit / debit accepted except AMEX and American Express
- Upgradable to Multi User Call Forward / VoIP
- Change divert destinations easily through and online control panel
- Send and receive SMS supported
This package allows you to:
- work globally wherever you have access to reliable broadband or any telephone
- easily change divert destinations by typing the number of your new destination and clicking save
- save money, as compared to BT’s exchange number service which costs 10 times a month more and has fewer features
- when diverting to landlines or mobiles, answer your phone differently and in a more professional manner based on the saved number that will flash on your screen before you connect to the caller
- sign up to a recurring card mandate or direct debit so you never run out of credit, or stay in control of your budget with its pay as you go top up service and its low credit alert system
- purchase telephone numbers from any part of the UK to appear local to your customer
- attract more business having local numbers in multiple areas
- use many types of phone devices, including:
- VoIP devices
- Standard landlines
- Business switchboards
- Mobile phones
- reduce roaming costs by receiving calls to you VoIP device or diverting your mobile to one of our numbers and then divert our number to a local sim card in the country that you are visiting
- track any calls to the number we have supplied, enabling you to track specific advertising campaigns where the number appears
- view your call logs online to know the profile of your calls. Get important information such as time of day where you get the most calls, the length of your calls, etc. This data might improve your time management and tell you best how to allocate available resources
- get a memorable number (optional extra cost) and stand out from the crowd