Hotel communication systems and methods

A mobile device interface system comprising:

• one or more processors;
• electronic memory accessible by the one or more processors, the electronic memory to store one or more guest service extensions of one or more private branch exchange system (PBX) extensions, the one or more guest service extensions for guest services that are provided by a hotel;
• a network interface to enable communication with a property management system (PMS) over an electronic communication network;
• a service extension engine to, by the one or more processors via the network interface, obtain the one or more guest service extensions and store the one or more guest service extensions in the electronic memory;
• a mobile device configuration engine to, by the one or more processors via the network interface:
• receive guest registration data from the PMS, including the hotel room assignment;
• and
• transmit to a mobile communication device the guest registration data and the one or more guest service extensions to configure a guest service application on the mobile communication device to place and receive calls as an extension of the PBX associated with a hotel room assignment, including calls to the one or more guest service extensions.