Hidden Numbers
Hidden Numbers
Possible Impact of Number Change on Pre-programmed Telecoms Equipment
Many subscribers will be informed of the 2009 Number Changes directly by their network service provider. From the commencement of parallel running in November 2008, callers will be able to reach customers in affected number change areas by dialing either the old or new number. At the end of parallel running, dialled calls to the old numbers will be routed to recorded announcements.
Some subscribers, both business and residential, will have telecommunications equipment which has a programmed telephone number in it, often referred to as a “Hidden Number”. Examples of equipment that have hidden numbers are listed below.
Customers who have this equipment should contact the supplier of this equipment to ensure that it will continue to function after number change-over. Providers of Telecommunications Equipment and Support Services should ensure that affected pre-programmed numbers in communications equipment for which they are responsible are changed to the new numbers.
In particular, the following equipment should be checked for pre-programmed numbers:
- PABXs
- Call Management Systems
- Public Payphones
- Customer Payphones
- Alarm and Security dial-up units
- Dial-up units for callout of fire and ambulance personnel
- Credit card validation machines
- Terminals for pre-paid top-ups and lotteries
- Fax Machines
- Personal Computers with dial-up modems
- Phone memory diallers
- Back-up data circuits using dial-up modems
For further information on the number changes please contact your telephone service provider.
