ISDN30 I421 PRODUCT RETIREMENT NOTICE

ISDN30 I421 is being completely retired in 2007. In most areas this is expected to take place on July 31st 2007, but in some parts of the country this may be at an earlier date.

Customers affected by an earlier retirement date will be notified in advance. On retirement, telephony service and features of ISDN30 I421 will no longer be available to existing Customers. Rental and any other related charges will no longer be applied. (This note will be updated with any change to the retirement date should this arise)

From August 18th 2006, Customers terminating their ISDN30 I421 Contracts within the Minimum Period will not be liable to pay early termination charges. This applies to 1 year as well as to 3 and 5 year long term Contracts.

See Subpart titled `Conversion to ISDN30e from Dass2 or I421' later in this Part for charges that apply to Customers converting from ISDN30 I421 to ISDN30e.

DESCRIPTION

Standby power provides alternative power for the ISDN 30 Network Terminating Equipment (NTE) in the event of mains power loss.

There are two options for standby power on ISDN 30:

OPTION 1(a)(b): Batteries for the optical fibre NTEs (1x2), (4x2), (16x2) (1st digit indicates number of ISDN 30 circuits on a pair of fibres) and SDH (Synchronised Digital Hierarchy) access.

OPTION 2: Independent stand alone batteries, which can power all types of NTEs.

Both options will supply standby power for up to 5 hours.

Note: ISDN 30 delivered over copper pairs (CWSS) instead of fibre does not require standby power as these NTEs are line powered and do not require an external power supply.

ELIGIBILITY

Business customers who have BT's ISDN 30 service.

PRICING INFORMATION

The single payment charge covers the supply and installation of the Standby Battery units.

Option 1 provides cover for a 4 year period.

There is no choice in Option 1 (a) (b) for the type of NTE fitted. BT planners will decide which type of NTE is required to serve the customer premises. Customer's still have the option of providing their own standby power and providing a 50 volt supply for the NTEs, in which case it is the responsibility of the supplier of the standby power to supply the 50V power lead to the NTE.

Existing customers using integral batteries will be changed to the new zero rental tariffs. The new single payment charge will be raised whenever they order a new battery.

Option 2 provides continual cover.

Existing customers with standalone batteries will continue with their current arrangement OR they may replace their NTE and take advantage of the integral batteries for standby power. Under these circumstances, service will need to be ceased and reprovided at standard connection charges. Customers must note that they will be required to undergo a break in service for this upgrade.

CONDITIONS

Service is provided under BT's Terms & Conditions for Business Service.

To maintain performance and under the terms of the contract between BT and the customer for Standby Power, integral batteries must be replaced four years from the date of installation. Should the battery fail within four years of date of installation, BT will repair or replace it free of charge.

It is the customer's responsibility to notify BT before the end of the 4th year after installation of battery to request the installation of a new battery.

If the customer continues to use the battery after the end of 4th year of use, the contract will be terminated and BT will not be liable for any possible damage or loss of service that may occur due to failure of the battery.