Mobile telephones.

1. 2. 1PWL wishes to let a Contract to improve and extend its Telephony & Resilience capability.

1. 2. 2This procurement is to provide Portsmouth Water with a Supplier capable of providing the goods and services required to satisfy PW’s move away from PSTN lines to a more secure and longer lasting solution.

1. 2. 3The initial work required under the contract must be complete by January 2027.

1. 2. 4PWL requires a robust and secure digital communication infrastructure that ensures reliable connectivity across all designated Portsmouth Water sites, providing the continuous and secure connectivity required for Critical National Infrastructure.

1. 2. 5The Goods and Services required will support PWL’s Operational and Information Technology needs at least until August 2030 and potentially to August 2035.

A more detailed discussion on the needs of PWL is contained in the Scope document 1. 2. 6The Contractor will be expected to collaborate with existing suppliers, where required by PW and to work with PWL on establishing a single supply chain provider without any interruption to the existing service.

1. 2. 7Portsmouth Water and the Contractor will implement a Service Level Agreement.

This comprehensive SLA will guarantee responsive support for any issues related to the communication network, safeguarding the continuity of Portsmouth Water’s core service delivery at all times. 1. 2.

8The provided communication network shall facilitate seamless point-to-point connectivity between all Portsmouth Water’s approximately 48 sites, as outlined in the Scope Document 1. 2. 9The network shall be capable of segregating, prioritising, and reliably supporting data traffic generated by critical systems, including but not limited to: Telemetry (GEOSCADA), CCTV, solar arrays, and inter-site operational process data.