Your exchange is accepting orders but only from cabinets that have been upgraded. You say that your cabinet has not been upgraded so that will be the reason you can not order Infinity. As regards why your cabinet has not been upgraded, you would need to email Openreach and ask them.
Email Openreach at firstname.lastname@example.org giving them your cabinet number, exchange,telephone number and address and they should be able to reply with the up to date information. They can take a coupe of weeks to reply.
What I want to know is how many cabinets have been upgraded on my loacal exchange compared to how many cabinets are served by my loacal exchange. I know my cabinet has not been upgraded. Where can I find this information regarding the number of cabinets served compared to how many cabinets have been upgraded?
The Openreach Superfast Fibre Broadband Scheme is being rolled out, done and managed by Openreach for ALL ISPs/CPs so BT Retail (a communication provider/ISP whom operates this forum) does not have much say as to when and if you will be able to get fibre broadband (FTTC or FTTP or equivalent) as that is up-to Openreach.
As the others have said you wil probably be best to contact NGA Openreach to see if they have any additional information regarding upgrading your PCP (cab) with a FTTC Dslam cabinet.
However your area may be covered by your BDUK fibre broadband scheme which is Better Broadband for Suffolk rather than the Openreach Commercial fibre rollout scheme.
You can see an estimated timescale for your postcode area to be upgraded via the BDUK Better Broadband for Suffolk Scheme by going to http://www.betterbroadbandsuffolk.co.uk/LineCheck.aspx?
You can signup for the BDUK scheme by going to http://www.betterbroadbandsuffolk.com/SignUp.aspx
If your area is covered by the Better Broadband for Suffolk BDUK scheme you can also contact the Suffolk broadband BDUK scheme (instead of the Openreach Commercial scheme - ie NGA Openreach) by using this email address: email@example.com with your landline phone number, postcode and exchange name to see if they can supply you with any more information or if you are within scope of the Better Broadband for Suffolk BDUK scheme
Regarding how many cabinets are within your exchange area, this is considered commercially sensitive data. Openreach are unlikely to tell you this I'm afraid.
Hope that helps,
**The Commercial Fibre-Optic Broadband Rollout is being managed and done by Openreach for all communication providers/ISPs. The BDUK fibre broadband schemes are managed by Openreach along with your local authority.BT Retail (a communication provider/ISP) has nothing to do with the rollout of fibre broadband.**
What part of all the previous posts are you having a problem with, you have been told how to contact Opnereach and that they are unlikely to tell you what you "need" to know.
To find out if the stated criteria for receiving a superfast broadbant connection is as stated "local exchange + 10 cabinets upgraded to FTTC is true or not?
If you read here: http://www.superfast-openreach.co.uk/the-big-build/
The final stage is building from the exchange to the new street cabinets. When the first 10 cabinets are ready, we'll let our customers (ie ISPs & Communication Providers) know and they can start to offer superfast fibre broadband services.
Of course the number of FTTC cabinets needed to be ready for the exchange to be "set" as accepting orders for fibre broadband can change depending on certain situations.
However your best port of call is to contact NGA Openreach or your Better Broadband for Suffolk BDUK scheme for more information regarding installing a new FTTC cabinet connected to your current PCP.
I'm afraid Openreach will not tell you how may cabinets or where they are located due to it being sensitive information