Multiline PSTN Line Rental

Flexible multi-line PSTN installations



Flexible multiple lines for SME

  • Available as Residential, Business or Multi-line forms
  • Residential lines supplied with Care Level 1
  • Business and Multi-line supplied with Care Level 2
  • Residential and Business lines support ADSL and FTTC broadband
  • Transfer your line within 10 working days without disruption
  • New line lead times vary from 3 days to 20 days depending on available slots
  • Available across the UK



Single PSTN Lines
Single PSTN Lines

The traditional style phone socket you see in most homes and businesses is known as a PSTN line. The single PSTN line form comes either as a residential (care level 1) or business (care level 2) form. It is these lines that can be used in conjunction with ADSL or FTTC to supply broadband connectivity to your premises.

Multi-Line PSTN
Multi-Line PSTN

Multi-lines differ from single lines in as much as they can't support broadband. However, what they can deliver is one phone number, but multiple lines to call out on, or receive calls through. This can then be connected to a basic phone system to handle, which can work out cheaper than the equivalent ISDN solution.

Supplied & Supported by Openreach
Supplied & Supported by Openreach

The lines we provide are supplied and supported by Openreach. Openreach are part of the BT Group, but are heavily regulated to ensure that no one provider has an advantage over the other. As such we buy our lines and support from Openreach on the same basis as everyone else. Using Openreach also means that we have 100% UK coverage, and that you can choose who your broadband provider is, and not limit yourselves to just our packages.

Fully Itemised Paperless Billing
Fully Itemised Paperless Billing

When you make calls through our lines we fully itemise each call allowing to you track spend. Alongside our standard online itemised billing you will find graphical statistics and powerful interrogation solutions providing you the ability to better understand what makes up the bulk of your call costs. To help the environment and to keep costs low we don't send out paper copies of calls, they are solely available online.

Broadband Support
Broadband Support

A single PSTN line can support ADSL and FTTC broadband. You are not restricted to purchasing CIX broadband, but we would of course like to supply you both solutions. If you are arranging a new PSTN installation we are able to supply broadband on a simultaneous basis ensuring that once the line is live so too is your broadband connectivity.

Directory Enquiries Listing
Directory Enquiry Listing

If you would like to appear, or not to appear in the directory enquiry, as a residential or business user, then we can set how this appears. Simply contact us to make any amendments, all of which are completed without additional charge.

Short Term Contracts
Short Term Contracts

Unlike the vast majority of our competitors, we operate our PSTN lines on 1 month contract terms. We believe that as long as we remain competitive and provide the support you require, there should be no need to restrict your line provider choice.

UK Phone & Email Support
UK Phone & Email Support

Our support staff are highly trained in dealing with telephone support queries. Using the very latest WLR3 platform from Openreach ensures we have powerful diagnostic tools and the ability to pick appointments whilst you are on the call to us. All support is housed in the UK within our Croydon offices.

Order Types

Transferring existing lines or installing new lines, we can deliver

Like-For-Like Transfer
Like-For-Like Transfer

When you have an existing line with another provider, and wish to move this across to CIX we would typically action this on a like-for-like basis. This ensures that your phone number and line features remain the same without any disruption or downtime. When you move the line, any existing broadband remains functional and continues to operate with the existing ISP.

Transfer with Changes
Transfer with Changes

When we transfer an existing phone line we can arrange to make changes to the line properties or features. For example, you may wish to change your line from a residential line, to a business line, or perhaps you would like caller display enabled. We can handle all of these as part of the switch.

New Installation
New Installation

If you require a new phone line we are able to arrange this into your property. Provide us notes of where you would like it installed and these will be passed to the assigned engineer. Full details of the appointment slot for the visit are supplied in advance and can be changed if they're not suitable.

Change of Address
Change of Address

A change of address order would be required if you wish to retain your phone number as part of a move. There are some restrictions regarding number retention which can complicate matters, but our staff are trained to check and can advise on alternative arrangements if necessary.

Restart Stopped Line
Restart Stopped Line

When a phone line is canceled it can sometimes enter a 'stopped' state. The circuit still exists, but it remains unusable. Restarting a stopped line is considerably cheaper than a new installation as no engineer need visit, simply the circuit is bought back into service the same day. If a stopped line is available, it will be offered to you by our staff as an option.

Monthly Line Rental Subscription

The monthly subscription costs per line

Product Price Description
Business Multi-Line (per line) £12.50

Although a multi-line is linked by a single number, each line of the multi-line is billed as you would a single business line. For example, if you had a 3 line multi-line, then the monthly subscription cost would be this charge multiplied by 3.

Transfer Charges

Maintaining short term contracts

Product Price Description
Transfer £0

When a line is transferred from another provider to ourselves Openreach charge us to do so. In order to maintain 1 month contract terms we pass across these charges as a one-off cost.

Transfer LLU Line £55

If your line is supplied by an LLU provider (ie a company with their own equipment operating outside of the BT network, such as TalkTalk or Sky) it is more expensive to move the line back to Openreach equipment. To maintain short contract terms we have to pass across these costs.

New Installation

New phone lines installed by Openreach on behalf of CIX

Product Price Description
Multi-Line New Installation £100

Each new line in a multi-line has a one-off setup charge to pay for the lines and engineers time. A 4 line multi-line, as an example, would be this charge multiplied by 4.

Additional Features

These additional features can be added or removed from a line at any time

Product Price Setup Description
Call Waiting £1 -

With Call Waiting, a beep alerts you to another call that is coming in. You then have the option to end your original call and take the new call, swap between both calls, or continue with their current call. In the latter case, the caller will be asked to ring back later.

Customer Controlled Call Barring £1 -

You can bar certain types of calls from being made from your phone or bar incoming calls.

Three Way Call £1 -

Three Way Calling is quick and easy conference calling that saves you making lots of different calls at different times.

Ring Back £1 -

Your phone will ring when the number you were trying is free so you don't waste time re-dialling the engaged number. Ring Back will keep trying the engaged number up to a maximum of 45 minutes.

Choose to Refuse £2.50 -

Choose to Refuse lets you put a stop to nuisance or unwanted calls by stopping them from getting through to you. You can block up to ten numbers. Callers who have had their call rejected will hear an announcement stating that their calls are not being accepted.

Anonymous Call Rejection £1 -

Your line will reject all calls from callers that withhold their number.

Presentation Number £2.25 £42

The presentation number service allows you to set the number that appears when you dial out from your line. For example, you may way your 0845 non-geographic number to appear rather than the underlying geographic number.


Options available to handle your calls when you're out

Product Price Setup Description
Wholesale 1571 £1 -

This is a basic voicemail service asking the caller to leave a message in the event of no answer, or your line is busy. Next time you go to make a call the dial-tone will appear as two tones indicating you have a message waiting.

  • Diversion of incoming calls when there is no reply or the called line is busy, to a network based answer service.
  • An unbranded announcement instructing the caller to leave their message.
  • Storage of up to 10 messages for up to 20 days.
  • Interrupted dial tone to alert of new message.
  • EU Notification when the mailbox is near capacity.
Call Minder Standard £2.70 -

Call Minder Standard has all the features of Wholesale 1571 and the following additional features:

  • Up to 30 messages stored and alerts the end user when message space is nearly full.
  • Messages saved for 30 days.
  • A message can be left when the line is busy and will ring you back to alert of new message.
  • Record your own personal greeting or use a standard BT message.
  • Remote access via PIN from another phone at standard call rates.
  • Text Alert feature sending an SMS to a nominated mobile whenever a new message arrives in the mailbox.

Call Diversion

Options available when you need to divert calls

Product Price Setup Description
Call Diversion (no announcement) £1.50 -

From your handset you can set a divert to another UK land line, mobile phone, or an overseas number. There are a series of rules you can set either to apply this to all calls, only when busy, or when there is no reply. Diverted calls are charged to customers at the standard rates which apply to the number dialled.

Call Diversion (with announcement) £1.50 -

This is the same as Call Diversion (no announcement) but the person dialling your number will hear an announcement that their call is being diverted. Most customers choose the no announcement option.

Smart Divert £2.40 £7.55

Smart Divert enables your calls to follow you without you having to return to your own phone. You can divert calls to other numbers anywhere in the UK, most overseas destinations or mobile phones. We provide you with a specific number to dial, a PIN number, and using these you can set the divert wherever you are.

Admin controlled call diversion - £15

This is a connection charge for our engineers to set a call diversion on our systems. Changes to the divert need to be requested to us via email or support ticket.

Caller Redirect (monthly) £3 -

Caller redirect is applicable if you have moved location and you were unable to retain your phone number.

With Caller Redirect, you don't have to worry about losing calls because you've changed your premises, or expanded to bigger offices. Callers will be made aware of your new telephone number by this message: The number called has been changed to [new number].

  • Callers to your old number will be told your new number.
  • Call Redirect offers a quick way to advise regular callers of your new phone number and ensures that 'ad hoc' callers are advised of your new phone number over time.
  • Gives you peace of mind when moving address or making other business changes.
  • The Call Redirect service is automatic and available 24 hours a day, 7 days a week.
Caller Redirect (quarterly) £7.50 -

Caller redirect is applicable if you have moved location and you were unable to retain your phone number. This is a quarterly subscription option.

Free Options

Enabled on lines without additional charge

Product Description
Caller Display

Allows you to see the phone number of the person calling you. If they choose to withhold their number, or are calling from abroad then the number won't appear.

Withhold Number

When you make outbound calls from the line your number is withheld by default. You can override this by prefixing the call with 141.


Enabled as standard. 1471 tells you the last number that called - unless the caller withheld their number by dialling 141 before dialling your number, or the call came from a switchboard extension number. 1471 Call Return also lets you return the call straight away, by pressing 3. 1471 is always active and useful even if you have an answering machine.

Care Levels

Levels of support from Openreach

Business Lines Monthly Cost Description
PSTN Care Level 2 FREE

This will operate during the period 0900 - 1800 hours Monday to Friday, and 0900 - 1200 Saturday, excluding Public and Bank Holidays. Where a fault is reported outside normal working hours, the fault will be treated as if it has been reported at the beginning of the next working day. BT will respond within 4 working hours of receipt of a fault report. If the fault is not cleared during this period BT will advise us of the progress being made to clear the fault.

PSTN Care Level 3 £3.45

This will operate 24 hours per day, 7 days per week, including Bank and Public Holidays. BT will respond within 4 hours of receipt of a fault report. If the fault is not cleared during this period BT will advise us of the progress being made to clear the fault. End users with Priority Fault Repair Service can transfer this service over as Care Level 3. A special around the clock phone number will be provided to customers, which will call a CIX engineer directly. This is to be used in emergencies only and kept outside of office hours.

Contract Length

Amongst the shortest term PSTN line contracts in the UK

Minimum contract lengths
New Installation 1 month
Transfer Line 1 month


Answers to common questions

The timescales for a new phone line depends on the available appointments locally from Openreach. These can vary typically from 3 to 8 working days. By default we will always select the soonest available appointment, although we can change this should this fail to suit you.

In the event you have a phone socket that you know isn't being used, there is a chance that the circuit is still present. This is known in the industry as a stopped line. A stopped line can be restarted the same day, and at a reduced cost compared to a new installation. Before we restart a stopped line we like to know that our clients have:

a) Located the socket
b) Plugged in a handset and listened for a dial-tone
c) If present dial 17070 which will read the circuit number back to us

We ask this to ensure that the circuit is present, and the stopped line you reference matches up to what we see in Openreach. As no engineer visits it is important that we know the line and wiring are in good condition, and hence the need to test with a handset.

If you do have a stopped line then we can normally restart the circuit the same day with the same number. In the event you would like another number, or wish to pick your own number it may take a further 1-2 days to re-activate. The cost of restarting a stopped line is £30+VAT.

Should you have a socket present, but it is without a dial-tone then you will still need to opt for a new line installation with the full installation charges.

If we complete a like for like transfer of a line, there is an Ofcom regulated timescale of 10 working days. The existing phone number(s) and features will be transferred in the process without any downtime or disruption.

If you are transferring from an LLU based phone supplier (such as Sky or TalkTalk), or you wish to move from Virgin, then additional steps, charges and time scales may apply. Please contact us for confirmation if this will be applicable to your line transfer.

If we are transferring your line from another provider your phone number will remain the same.

Once a phone line has transferred to CIX you should call or email us for any assistance, whether this be general advice or help with a fault.

We are able to provide a number selection service. Please make us aware when placing a line rental order (eg in the notes field) this is what you require and we will email you a selection of numbers in your area to choose from. A one-off charge of £15+VAT applies to number selection requests.