The aim of this tender is the provision and operation of a cloud-based telephone system including maintenance and technical support and its implementation in the operation of the client (AG). On-demand: License extensions, training, consulting and other technical services & supply of telephone equipment. The connection to the current carrier is mandatory. There should be no number porting. ZALF currently operates a classic HW telephone system, which is self-hosted. The classic telephone system is reaching its limits in terms of modern telephony such as softphone functionality or apps. In addition, central infrastructure components are no longer to be operated in-house. Therefore, a scalable cloud telephone system is to be procured. The connection to the public telephone network is currently made via a SIP trunk provided by the DFN (German Research Network).

The aim of this tender is the provision and operation of a cloud-based telephone system including maintenance and technical support and its implementation in the operation of the client (AG). On-demand: License extensions, training, consulting and other technical services & supply of telephone equipment. The connection to the current carrier is mandatory. There should be no number porting. ZALF currently operates a classic HW telephone system, which is self-hosted. The classic telephone system is reaching its limits in terms of modern telephony such as softphone functionality or apps. In addition, central infrastructure components are no longer to be operated in-house. Therefore, a scalable cloud telephone system is to be procured. The connection to the public telephone network is currently made via a SIP trunk provided by the DFN (German Research Network). This must also be ensured by the future solution. Initially, the changeover will only affect the main location in Müncheberg with around 600 extensions. In a later phase, two external locations with their own number pad will also be integrated. ZALF already has about 200 Yealink SIP-T19P E2 SIP phones. These must be compatible with the new system. To replace the existing telephone system, a scalable, cloud-based telephone system is to be provided and operated. The professional and technical requirements for the telephone system are defined in the catalogue of requirements. At the time the order was placed, the scope of the licence ("basic services") is telephony licences for 650 users. In view of the growth in staff and the connection of further locations, the licenses should be able to be increased by up to 200 additional users in the future. The AG can book additional licenses at any time. It should also be possible to reduce the number of licenses if necessary. In addition, licenses are to be offered for the following two types of use: - Softphone use (350 users at the time of placing the order, more as required) - Teams as softphone use (30 users at the time of placing the order, more as required) The remuneration is paid monthly starting from the first provision of the PBX (license period). In this case, initial provision (of the licenses) means when the PBX is operational and the licenses can be used. Everything else is priced in the introduction. All costs for provision (licenses) and operation (hosting) as well as maintenance (updates & upgrades) and technical support (troubleshooting) must be included in the license costs. The Contractor shall provide the Client with the telephone system in a cloud infrastructure or infrastructure operated by the Contractor, including the necessary access, from the agreed date of provision. The professional and technical requirements for the telephone system are defined in the catalogue of requirements. A corresponding availability statement must be made for the virtual system: a minimum availability of 99.6% on an annual average should be guaranteed. Higher availabilities are evaluated positively (see catalogue of requirements). Updates and other maintenance work by the Contractor must be announced and carried out outside of core operating hours. The core operating hours are: Monday to Friday, from 7:00 a.m. to 6:00 p.m., except for public holidays. Reporting is provided by the Contractor on a monthly basis with regard to availability/unavailability, disruptions, response and recovery times as well as credits owed. A regulation in the event of unavailability must be offered (see 5.3 AK). Both the signalling and the media flows between the cloud and the Contractor's end devices must be encrypted (see 4.3 AK).