Supplied as Digital Standard or Digital System lines
The majority of lines will use Digital System technology
Can support multiple DDI number ranges
Requires a PBX phone system to link to your phones
ISDN 2 lines are supplied as pairs (2) channels
Lines supplied are subject to survey
Digital System ISDN2
This is when an ISDN2e line connects to a PBX. Signals from the network travel as far as the PBX which
then, according to how it's programmed, decides the onward routing. DDI's can be set up with this configuration
to point to internal extensions. This is the most popular choice of ISDN configuration.
Digital Standard ISDN2
This is a configuration where one stand alone ISDN2e line connects straight to equipment. These are typically used for
data applications owing to the inability to support line hunting or multiple channels beyond the initial 2.
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. No competitor can deliver or support
lines quicker than we can.
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
No Minimum Spend Commitments
Unlike a growing number of our competitors we don't contract you to a minimum spend each month
simply to get the best rates. We offer the best rates to all our customers allowing you to make
use of the lines without thinking of how much or how little you are spending.
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
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
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.
Transferring existing lines or installing new lines, we can deliver
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 line properties, DDI's and line
features remain the same without any disruption or downtime.
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 4 channel operation to a 2 channel setup, or perhaps
you would like CLIP enabled. We can handle all of these as part of the switch.
New ISDN 2 Installation
If you require a new ISDN 2 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
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.
Download Line Rental Pricing
We recommend you contact us with your requirements and we can provide you an obligation free quotation. Line rentals
can be complex, so to ensure that you understand the costs fully our team are happy to put together a proposal. If you prefer, a
complete pricing list for our lines can be accessed here.
Don't under estimate your reliance on a working phone line. Don't take the chance of a slow response time from Openreach, and instead
invest in a higher care level to act as your insurance policy should the unexpected happen.
Monthly Cost (ex.VAT)
ISDN2 Care Level 2
Clear by 23.59 next day, Monday to Saturday, excluding Public and Bank Holidays. For example,
report Tuesday, clear Wednesday.
ISDN2 Care Level 3 (per channel)
Report 13.00, clear by 23.59 same day. Report after 13.00 clear by 12.59 next day, seven days a week,
including Public and Bank Holiday.
ISDN2 Care Level 4 (per channel)
Clear within 6 hours, any time of day, any day of the year.
Amongst of the shortest term ISDN 2 line contracts in the UK
Minimum contract lengths
Answers to common questions
Questions around installation or anything else around your line? Below are the ones customers commonly
ask and our answers. Should you have a question that isn't answered here you can call us on 03300 538 548
or email us at firstname.lastname@example.org.
The timescale's for a new phone line depends on the available appointments locally from Openreach. These
can vary typically from 15-30 working days for ISDN2 lines. By default we will always select the soonest
available appointment, although we can change this should this fail to suit you.
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.
Once a phone line has transferred to CIX you should make use of the diagnostics and fault raising tools
within our control panel. They allow you to raise a fault in real-time to Openreach around the clock. We
provide a tool allowing you to see notes as they arrive with us. Should you have any general questions then we
are always available by calling or emailing us.
We can change your ISDN2 number, and we can add additional DDI number blocks, however at present there are
no number selection facilities available. As such, the numbers provided would be the next available from