For any further queries please contact us on 1800 245 440


t&cs Basic Rate

Provides 2 ISDN voice channels and is suitable for small offices or branch sites.


t&cs Fractional Rate

Provides 16 ISDN voice channels and is ideal for larger sites and gives the ability to flexibly add additional channels if needed.


t&cs Primary Rate

Provides 30 ISDN voice channels and is ideal for larger sites or HQ’s.


Services you can count on


We also offer a full range of Service Level Agreements across your Fractional and Primary Rate line types providing you with clear, reliable and guaranteed levels of service around your critical voice services. 24X7X365 fault reporting is available with all SLA’s; depending on the level of service and availability you require, we have an option to suit you. Full SLA information is available from your eir account manager.

Switching to eir couldn’t be easier and we can work with you to provide tailored solutions for your unique business requirements.




  • Digital line
    Digital line with 2 voice channels (ISDN), 16 voice channels (FRA) or 30 voice channels (PRA).
  • Use with your telephone system
    Can be linked to your telephone system, or used with our digital cordless phones.
  • Buy blocks of DDIs
    Direct dial in (DDIs) numbers can be purchased in blocks of 10.
  • Videoconferencing
    Multiple eir ISDN BRAs are capable of supporting videoconferencing

1. What is ISDN BRA?

ISDN stands for Integrated Services Digital Network. It is a digital phone line that allows you to send and receive voice, data, images and video conferencing over the one line. Your ISDN BRA includes two 64kbits channels and enables you to make two calls simultaneously.


2. What wiring is involved with getting a Hi-speed line?

The NT1+ unit will be located where you require, bearing in mind that it requires a power point within 2 metres of where the unit is to be positioned.


3. Can I connect an answering machine to my ISDN line?

An answering machine can be connected to either of the analogue Ports on the ISDN NT1+ Unit.


4. Can I use ISDN BRA straight away?

You can plug your analogue equipment into the telephone socket where the symbol appears on the eir ISDN Plug and Play unit. However to get the full benefits out of the line you will need to make sure that you have:-
A PC or laptop with windows 95 or a later version;-
An account with an ISP that supports digital access;-
An ISDN modem to achieve the speeds of up to 64K or 128K for 2-Channel access.


5. How much does it cost?

There is a once-off connection fee of €202.47 and monthly rental is €32.51. There is a once-off connection fee of €25.39 per 10 block of DDIs and monthly rental is €7.62. If you require more DDIs you can purchase additional 10 blocks or a 100 block for a once-off connection fee of €126.97, monthly rental is €63.49.


6. Do the call charges differ from normal analogue PSTN lines?

All call charges over an ISDN line are exactly the same as for PSTN (analogue) lines.


7. How many calls can I make at any one time?

You can make two simultaneous voice calls, two data calls or one digital voice call and one data call. If both channels are used together you will be charged for two calls.


8. How many digital phones, computers and other devices can I attach to the line at once?

Up to eight pieces of equipment can be connected to an ISDN or Hi-speed line, any two of which can be used simultaneously, but extension wiring is required. eir does not supply additional wiring.


9. If there is a power failure will my ISDN still work?

In the case of power failure limited service is still available. Only the phone connected to the 1st analogue port of the NT1+ will work.


10. What call management services can I avail of?

The following eir phone services are available with ISDN BRA:eir messaging, call forwarding*, call waiting, three-way calling, caller display and caller line restriction.Click here for more information on our phone services.
*Note: When Call Forwarding is activated, both numbers of the ISDN or Hi-speed line will be forwarded. Call forwarding per number is not available.


11. What do I need to connect to the internet?

You will need a PC or laptop with Windows 95 or a later version, an account with an ISP that supports digital access and an ISDN modem to achieve the speeds of 64Kbps or 128Kbps.


12. What is the Business Line 8 Hour Repair?

The Business Line 8 Hour Repair is our guarantee that we will fix your line within 8 working hours. This can be applied to your standard phone line (PSTN) or your ISDN Basic Rate (BRA) line. This Service Level Agreement (SLA) is based on a repair between normal business hours which are 08.30 to 17.00, Monday to Friday (excl. Bank Holidays).


13. Is this line any different from my normal telephone line?

No. Your telephone line will remain as normal. The only change will be the assurance of prioritised repair time on your phone line should a fault occur.


14. How much does the Business Line 8 Hour Repair cost?

The price will be added on to your existing telephone (PSTN) or ISDN BRA line rental. e.g. if you currently have a standard telephone line (PSTN), this costs €20.96 ex VAT per month. To avail of this SLA your new monthly charge will be €23.46 (rental + SLA). On your ISDN line the monthly charge will be €36.01 (€32.51 + €3.50).


15. Do I need to purchase extra equipment to avail of the Business Line 8 Hour Repair?

No. This is an SLA that exists on your standard PSTN or ISDN line, so once these are in place no extra equipment is needed

Terms and Conditions
1.eir Limited having its registered company address at 1 Heuston South Quarter, St John’s Road, Dublin 8, Ireland (hereafter referred to as “eir”) may provide a facility in this Scheme referred to as ”Integrated Services Digital Network” (ISDN) whereby a telephone customer (“the Customer”) may make telephone calls over-switched end-to-end digital transmission paths subject to these Terms and Conditions; the provisions of the Telecommunications Scheme in force, as amended from time to time (hereinafter referred to as the “Regulations”); and any legislation applicable thereto (together “the Agreement”). The Customer will be charged the applicable charge for such service as specified in Part 10
of Section 1 of the Telecommunications Scheme, as amended from time to time (hereinafter referred to as the “Regulations”). A copy of the Regulations may be inspected at eir, 1 Heuston South Quarter, St John’s Road, Dublin 8 or contacting the eir Customer Information Services on freephone 1800 203105.
2. The Customer will pay eir the charges for the services. Full details of all eir’s current charges can be obtained by visiting or by contacting freephone 1901 (Residential Customers) or freephone 1800 601 701 (Business Customers).
3. The provision of the ISDN is contingent upon the carrying out of a site survey by eir and is at all times subject to availability of appropriate facilities. eir reserves the right to decide on the method by which service will be provided.
4. It is the responsibility of the Customer to provide a suitable environment, accommodation, including all necessary trunking, conduits and cable trays in accordance with the relevant installation standards specified by eir.
5. The Customer must ensure that a live power outlet is available within two (2) metres of the line termination point. All preliminary works must be completed by the Customer, prior to the installation of the ISDN by eir.
6. eir shall provide the Customer with a “Ready for Service Date” on the date on which the Customer orders the ISDN service. Where a site survey is required, eir will agree the ”Ready for Service Date” following the site survey. “Ready for Service Date” means the date by which eir shall use its reasonable endeavours to provide the ISDN facility to the Customer.
7. The Ready for Service Date is:-  twenty (20) working days from the date of the order where plant and equipment is available to provide the ISDN service and the service applied for is basic rate access or high speed access; forty (40) working days from the date of the order where the application is for fractional rate access or primary rate access
8. The Customer is obliged to provide eir with access to the site at all reasonable times to enable it to provide the ISDN facility.
9. This Agreement shall be deemed to have commenced on the date the service has been first provided and the services will continue unless and until terminated pursuant to this Agreement.
10. The Agreement may be terminated in accordance with the Regulations or otherwise by either party giving to the other prior notice in writing requesting termination of the Agreement. If the Agreement is terminated, the Customer shall pay all monies due to eir up to the date of cessation of the services.Please address any correspondence to: eir Ltd, Business Service Centre, 7th Floor, Telephone House, Marlborough Street, Dublin 1.
11. eir shall only be responsible for faults on the service directly caused by the eir network. To enable faults to be logged accurately, the Customer shall provide eir with the correct site location and a main contact number when reporting the fault. The Customer must report a fault on line at or by contacting our Business Service Centre on freephone 1800 601 701.
12. If the Customer reports a fault in the service, eir will use its reasonable endeavours to respond in accordance with level of repair service, which applies to that particular ISDN product, or, where applicable, in accordance with the level of repair service the Customer has chosen pursuant to paragraphs 13 and 14 below.
13. The Customer may avail of specific service levels on fractional or primary rate access lines, details of which can be viewed by visiting, or by contacting the
eir Business Service Centre on freephone 1800 601 701.
14. While currently there is no service level agreement for ISDN basis rate access, eir shall use reasonable endeavours to remedy any fault, where it is reasonably possible to do so, without undue delay.
15. If eir responds to a fault and finds that no fault exists in the eir network, eir may charge the Customer for the call out at the applicable rates set out in the Regulations (see Part 1 of Section 1 of the Telecommunications Scheme)