pw4 wrote on Mar 9
th, 2009 at 4:03pm:
I could change at will the redirection GN of the 0870 number that is published for contacting me by using the internet or the automated menu system over the phone, and I can specify a series of GNs for use in various eventualities such as 'no answer' or 'busy'.
Thanks to PW4 for describing what may be one possible arrangement for use of a NGN.
I am not however convinced that this is the only possible type of arrangement, i.e. that all calls to non-geographic numbers are simply routed to a "GN". It is implied, or stated, that the routing of NGN calls is always done at the point of origination using database lookups that provide the GN (or rather the routing that corresponds to a GN). If this were so, then it would indeed be necessary to have a point on the public network (i.e. a GN) to which each call was routed , even if that were not a single point for each NGN.
I have heard talk of an intelligent switch associated with the NGN, which handles and distributes calls as they arrive, possibly holding them to await selection of an option before deciding where to route them. If this alternative method of handling calls to NGNs were used, perhaps only in some cases, then surely there would be the option to route calls over a private network, e.g. using IP, to the point where they are answered, without having to use a GN.
pw4 wrote on Mar 9
th, 2009 at 4:03pm:
Obtaining an 'underlying number' would not benefit any potential caller as I might not be at that location.
Many of the alternative numbers in the "SayNo" database do not offer exactly the same service as those against which they are given. Some could be said to be equivalent to one of PW4s "underlying numbers", and so there is no good reason why these numbers are not in the database - perhaps they are!
I am not sure if anyone believes that every NGN has a GN equivalent as a simple alternative. Life would be so much easier if this were so, but I fear that we have to deal with the sadly complex reality of the world as it is.
On a related, if broader, point, which could be relevant to Nationwide. We all recognise the benefit that publication of alternative numbers can provide to those who use them. Can we offer any example of an organisation that has been forced to abandon one or more revenue sharing numbers, or to itself publish alternatives, as a result of alternatives having been published in the "SayNo" database?
I have read of cases where alternatives have been changed or disconnected. This could be classed as a type of victory, if the numbers were truly valid alternatives, if not it is a shameful defeat. I am thinking of cases where a revenue sharing number has been removed from the database because its presence there, with an alternative, can be shown to have caused it to be abandoned.