Typical installation is a Phone System with Low Cost Lines (VOIP), Phone Sets with Paging Speakers, located around store and at cashpoints.
Remote Extensions to answer calls anywhere with mobile app or IP Phone, no need to give out mobile phone number, your shop line can be answered on your mobile phone.
Mobile Headsets for staff to answer calls by just pressing headset.
Network points for Visa Machines to allow fast authorisation through broadband (with 4G Failover)
CCTV to Secure your premises
WIFI giving you coverage throughout the premises
Paging System to announce special offers, communicate with staff and customers, You can make a page through a mobile APP or IP Phone (even if your not in the premises!)