Every business question we get asked. All 45 of them, on one page.

A cloud phone system is a business phone service that runs over your internet connection instead of a copper phone line. Calls are handled in a data centre rather than by hardware in your office, so one extension rings a desk phone, a computer and a mobile at once.

A TISA Cloud PBX extension is £4.20 per extension per month excluding VAT on a 24 month term, £4.50 on 12 months and £6.40 on 30 day rolling, plus a one off activation charge of £10.64 on the 12 and 24 month terms. That includes unlimited incoming calls, with outgoing UK calls charged at 5p a minute.

Not at the entry price. At £4.20 per extension a month excluding VAT, incoming calls are unlimited and outgoing UK calls are charged at 5p a minute. Unlimited outgoing UK calling is a separate tier at £8.50 per extension a month on a 24 month term, subject to a 5,000 minute fair usage limit.

Every TISA Cloud PBX extension includes the same feature set, and there is no higher plan to climb to. An IVR auto attendant, ring groups and call queues, call recording, time based routing, call analytics, voicemail to email, call forwarding, caller ID control, blind and attended transfer, call park, conference calling, and custom greetings and hold music are all standard, on every extension, on every term.

Yes. Existing UK business numbers can be transferred to TISA Cloud PBX, so you keep the number you already advertise. You choose the date the transfer happens, and porting a landline or VoIP number typically takes 7 to 10 working days. Additional UK landline or 03 numbers are £3.30 a month excluding VAT, with a one off £10.64 to set each one up.

Not necessarily. If you already have a Grandstream or Yealink handset you can add it yourself on the portal at no charge: enter the MAC address and serial number from the label underneath the phone, choose the extension it should ring, then factory reset the handset and plug it in. Grandstream GRP2602 to GRP2616 and GXP2130 to GXP2170 are supported, along with 72 Yealink models including the T3x, T4x and T5x desk range. The handset has to be factory reset rather than configured for another system, and it must not still be registered to another provider. Any other SIP phone works too. If it is not on the auto provisioning list, we send you the configuration details and you enter them on the handset yourself. You can also use the app on Android, iPhone, Windows and macOS instead of a desk phone, or buy a handset from us ready configured.

Yes. The extension goes wherever the person goes, with the same number and the same features. It runs on Android, iPhone, Windows and macOS, and on standard SIP desk phones.

Yes. Every TISA Cloud PBX account includes 1GB of call recording storage, kept for 30 days. More storage extends how long recordings are kept: 10GB for 90 days is £5.30 a month, 30GB for 180 days is £10.60, 100GB for a year is £26.70 and 500GB for two years is £106.90, all excluding VAT.

A new TISA Cloud PBX system is set up the same day. If numbers are porting to us with you, a mobile number moves within one business day and a landline or VoIP number typically takes 7 to 10 working days. You choose the date.

TISA targets 99.9% uptime for Cloud PBX, excluding planned maintenance. That is a target rather than a guarantee, and financial service credits apply only where a separate written agreement provides for them. Service status is published live at status.tisa.one.

A SIP trunk carries several simultaneous calls to a phone system you already own, rather than replacing it. TISA SIP trunks are on a 12 month term, priced by channel: 2 channels £9.00 a month, 5 channels £17.00, 10 channels £34.10, 30 channels £113.80, all excluding VAT. Unlimited UK calls are included.

Yes. International calls are charged separately from the extension price, at the rate for the destination. Current rates are on the Cloud PBX international rates page.

The UK PSTN and ISDN network is being withdrawn on 31 January 2027. Analogue and ISDN business lines must move to a digital service before that date. Openreach stopped selling new analogue and ISDN lines in September 2023, so a business still on one of those lines needs a replacement such as a cloud phone system.

Business SIMs are priced by data allowance, excluding VAT, on a 12 or a 24 month term. With no data it is £5.30 a month on 12 months and £4.70 on 24. 1GB is £8.00 or £7.10, 3GB is £8.90 or £8.00, 10GB is £10.60 or £9.70, 30GB is £13.30 or £12.40, 100GB is £17.80 or £16.90, and unlimited data is £24.00 or £22.80.

Business SIMs are available on 12 month and 24 month terms only. There is no 30 day rolling option. The 24 month term carries the lower monthly price.

SIM delivery is free on every Business SIM order, however many you take. The published price per SIM is the same whether you order one or fifty, so a small team never pays more per line than a large one. Volume pricing and bespoke commercial terms are available for larger estates and multi site deployments: tell us the number of lines and we will quote it.

Yes. Ask your current provider for a PAC code for each number you want to keep and send them with your order. Porting means nobody has to hand out a new number.

Yes. Usage, plan changes, replacement SIMs and billing are handled in one place rather than line by line.

International calls are charged separately from the monthly price, at the rate for the destination. TISA publishes the whole list rather than quoting a headline rate: see the Business SIM international rates and the Cloud PBX international rates. The same card prices Pocket Office calls.

Tell us and we move that line to a larger allowance. If you want a hard limit instead, ask us to set a spend cap on the SIM.

Pocket Office is a Business SIM with a Cloud PBX extension included in the SIM. One SIM in one phone is both the mobile line and the desk extension, so the same handset answers the business number and calls out from it. No second phone.

Pocket Office is priced by data allowance, excluding VAT, on a 12 or a 24 month term. With no data it is £10.10 a month on 12 months and £8.50 on 24. 1GB is £12.80 or £10.60, 3GB is £13.80 or £11.70, 10GB is £16.50 or £13.80, 30GB is £20.80 or £17.00, and 100GB is £26.70 or £22.40.

A Business SIM is a mobile line. Pocket Office is the same line with a Cloud PBX extension included in the SIM, so the phone is part of the company phone system. That is the whole difference, and why it costs more per month.

Pocket Office is available on 12 month and 24 month terms only, the same as Business SIMs. There is no 30 day rolling option.

No. It works in the phone the person already carries. One device, one SIM.

TISA business broadband starts at £49.99 a month excluding VAT on a 24 month term. There is no separate line rental to add to it.

80 Mbps, 330 Mbps and 1000 Mbps. Which of them can be delivered depends on the infrastructure at your postcode, so the speed is confirmed against the address before you order.

A business router, a static IP address, and no line rental on top. Prices exclude VAT and the term is 24 months.

No. Business broadband carries no fair usage cap, no data cap and no download limit.

Standard repair is 48 hours. Faster targets of 24 hours and 7 hours are paid options, so a business that cannot lose a day buys the shorter target rather than hopes for it.

It sends large volumes of SMS to a contact list from sms.tisa.one. Send now or schedule, import contacts by CSV, personalise with merge fields, and read the delivery report afterwards.

Bulk SMS is sold as prepaid bundles of messages, bought up front. The larger the bundle, the lower the cost per message: it runs from 5p a message on the smallest bundle down to 3p on the largest. The six bundles and their prices are on the SMS pricing page. All prices exclude VAT.

Yes. Set an alphanumeric sender ID of up to 11 characters, the limit the SMS standard allows, and messages arrive from your business name. Sender IDs are configured in the SMS portal.

160 characters using standard GSM encoding. Longer messages are split into segments and each segment is charged. Emoji and some special characters switch the message to Unicode encoding, which reduces the limit to 70 characters per segment.

Yes. A REST API sends single and bulk messages, checks delivery status and manages contacts, so sending can be built into your own CRM. The documentation is in the SMS portal.

Opt outs are added to a suppression list automatically and excluded from later campaigns. You can edit that list in the portal. As the sender, keeping it is your obligation under UK GDPR and PECR.

No. Every business price TISA publishes excludes VAT. VAT at the prevailing rate, currently 20%, is added on the invoice, which shows the breakdown.

TISA reviews prices once a year on 1 April. If you are a micro business, a small business or a not-for-profit, the categories Ofcom GC C1 protects, a review never changes what you pay during your contract. For larger businesses our terms allow one annual adjustment of CPI plus 3.9 percentage points, applied on 1 April and notified at least 30 days in advance. New pricing otherwise applies only if you choose to renew.

Yes. Cloud PBX extensions, Business SIMs, Pocket Office, broadband and Bulk SMS can all sit on one monthly invoice.

Business accounts are invoiced monthly in arrears and paid by Direct Debit, bank transfer or card. Direct Debit is the one we recommend.

Yes, and it is included at no extra cost. The team management portal gives you every SIM on the account in one place: set a spend cap per SIM, watch usage as it happens, order a SIM for a new starter, and activate or suspend a line without waiting for us. Reports come out of the same place. This is set out in clause 5.3 of the Business Terms.

Yes. Every business account comes with a team management portal, and a monthly spend cap can be set per SIM from it. The cap controls out of bundle charges such as international calls, and chargeable services stop at the limit. If you would rather we set it for you, ask and we will.

Tell us as soon as you know. The old SIM is deactivated and a replacement with the same number is sent out.

For a mobile number, ask us for a PAC code to keep it, or a STAC code to cancel without keeping it. A landline, 03 or freephone number has no PAC: your new provider raises the transfer with us instead. Inside a minimum term, an early termination charge may apply for the remainder.

Coverage at an address is checked with the coverage checker. For diverts, the call forwarding guide has the steps.