Functionality of EMS, PMS, CAS, CRM,GDS

Energy Management Systems

The functions of EMS could be applied for different perspectives such as automatic temperature setback and recovery, setback optimization. It eliminates unnecessary energy consumption without compromising guest comfort. Moreover, the built-in wireless networking allows remote management without using or interfering with the property's existing wireless infrastructure.

EMS

Property Management Systems

Reservations, check-ins and check-outs with PMS can store the histories and photos in order to provide better visitor recognition. Besides, it keeps track of how many rooms you have left to sell and at what rate. PMS integrates with front office accounting, marketing as well as interfacing to other systems such as phone, restaurant and pay-per-view movies.

PMS

Call Accounting Systems

A CAS reduces employee phone abuse and allows employee productivity to increase. This type of system also reduces fraud and security problems of hotel, which promotes the improvement of the overall success of a business. It reduces fraud by allowing management to monitor who employees call, verifying personal or business use.

CAS

Central Reservation System

This is frequently refered as Global Distribution System (GDS).  The service is an enterprise-wide central reservation system, which maintains a single real time database environment, accessed through all Reservation Channels, may it be Travel Agent, Hotel's website, Partner websites and other Online Distribution Channels. It is driven by the originating source within the Channel, and is easily managed by the hotel management via the Internet.

Global Distribution Systems

GDS is a network operated by a company which enables automated transactions between third parties and booking agents in order to provide services to the end consumers. A GDS can link services, rates and bookings consolidating products and services across all three travel sectors: i.e., airline reservations, hotel reservations, car rentals, and activities.

The GDS systems are a huge network of thousands of computers set up originally by different companies. They provided Computer Based Reservations (CRS) services to all travel agents long before the Internet.

Referance

1. GDS, CRS and channel management. Retrieved from http://axses.com/encyc/archive/arcres/arcrates/users2/globalmarketing_about_gds.cfm

2. Central Reservation System, Tuesday, 06 July 2010 01:42, Online Sales Team ,Retrieved from http://www.iaweb.net/global-distribution-systems/central-reservation-system.html

3. EMS retrieved from https://www.dometic.com/enus/Americas/USA/Hotel-Equipment/Energy-Management-Systems/
4.