Why is it even important for the hotel phone system (PBX / PABX) to know the room status and which guest is currently using which hotel room?
Normally, the hotel room extension behaves differently when a guest is in the room than when the room is vacant. Also, some settings are guest-specific.
For example, a vacant room’s extension may be blocked for outbound calls but should be opened to such calls as soon as a guest checks in.
Furthermore, in some hotels, the guest may select whether they want to allow certain destinations, like long distance or international calls, which may have high rates. As soon as the guest checks-in, not only does the hotel phone system allow such calls, but it also starts counting the time-per-destination, so that upon check-out the guest could be charged for the calls that were made.
Besides allowing calls, the hotel phone system should be updated with the guest’s name to be used as a caller ID, to allow for personalized response when the guest calls any of the hotel’s facilities.
Voicemail also needs to be treated appropriately upon arrival and departure of guests. When a guest checks in, the voicemail should automatically open for the message and when the guest checks out it all messages should be erased. Here, again, the hotel phone system should automatically perform these actions upon receiving the queue from the hotel PMS.