In this document, BDUK presents its baseline definition for 2Mbps USC:

Connection capable of at least 2Mbps download speed measured at CPE

Access offering throughput of at least 2Mbps for 90% of the time during the busiest 3 hour period daily

Access offering throughput of at least 256Kbps upload speed for 90% of the time during the busiest 3 hour period daily

Access to an ISP such that end‐to‐end latency, jitter (packet delay variation), and packet‐loss between CPE and ISP's internet gateway is adequately controlled to maintain 2Mbps throughput and customer experience for different packet sizes under peak‐time loading.

Access to an ISP product whose data volume limit, throttling and packet prioritisation policy is made transparent and is in line with current market practice, but in any case no less than 5GB per month.

Access to an ISP product with an install and monthly charge comparable with typical, comparable retail reference price, e.g. BT Retail.