A PSTN Split Line is a standard analogue line provided, primarily for voice services, on a metallic pair on which the high bandwidth has been rented by BT to another licensed operator (OLO) for the provision of services to the end-user. Voice service is accessed via a standard connection socket on the splitting device provided by the OLO at the PSTN customer's premise.

This service is available to all customers with the following exclusions:

- New provision

- Lines with Bypass

- Additional exchange lines

- Alarm lines

- Auxiliary lines

- Low loss exchange lines

- Out of area exchange lines

- Payphone lines

- Temporary lines

- Third party lines

The following services will not be provided over PSTN split lines

- Low User Scheme

- In Contact

- Remote Call Forwarding

- Featurenet

- Featureline services

- Red Care

- BT ADSL

- HDSL

- SDSL

- ISDN services

- Business Highway - Business Highway has been withdrawn from new supply with effect from 10 April 2006.

- Total Care

- Prompt Care

Service is provided under BT's Terms & Conditions for Business Service or BT's terms and conditions for residential service as appropriate.

Customers are eligible for Monthly Payment Plan and Direct Debit payments methods.