Updated 8.20pm

EIRCOM HAS SAID services are now stable for customers impacted by the nationwide outage today.

Mobile and landline numbers for businesses across the country were affected as well as ISDN lines.

Standard fixed line numbers were not impacted.

The company confirmed an incident in its core telephony network this morning impacted 5% of its daily call volume.

In a statement earlier today, it said:

The incident resulted in intermittent service that has impacted customers which use 1800 and 1500 numbers as well as some mobile numbers.

The root cause of the incident is now being investigated.

Emergency numbers and helplines

Dublin Fire Brigade said earlier this afternoon that using landlines to contact emergency services “may be difficult”.

We are advised by #eircom that using landlines to contact emerg servs may be difficult. Some mobiles also affected. This is a national issue — Dublin Fire Brigade (@DubFireBrigade) September 2, 2015 Source: Dublin Fire Brigade /Twitter

However Eircom said calls to 999 and 112 were not affected. The company apologised for inconvenience caused to customers.

Due to the issue Gas Networks Ireland was forced to establishe a temporary gas emergency number for customers seeking to report gas escapes.

Children’s charity Childline, meanwhile, advised service users experiencing network issues to seek help online.

Important!! Children trying to contact #Childline number might experience problems due to Eircom issue. Go to Childline.ie for help. Pls RT — ISPCC Childline (@ISPCCChildline) September 2, 2015 Source: ISPCC Childline /Twitter

ESB provided alternative numbers to customers who were unable to get through to its Eircom line.

We are still experiencing some issues with our phone lines due to an Eircom fault . Alternative numbers available http://t.co/ni1wGdPhsw — ESB Networks (@ESBNetworks) September 2, 2015 Source: ESB Networks /Twitter

And RTÉ’s Liveline programme confirmed that its usual 1850 number was also down.

Our 1850 number is down right now, if you want to #TalktoJoe call 01 208 3263, 01 208 2984 or email joe at rte dot ie pic.twitter.com/qmbGmvterx — Liveline (@rteliveline) September 2, 2015 Source: Liveline /Twitter

Customers without service have been advised to report issues online, as calls cannot be connected to customer care centres.

- With reporting by Michelle Hennessy.

Read: First UPC, now Eircom’s unloved brand could be on the way out