What is the reason why hotel calls can only be made outside but not inside? The switch is LG's

Hello, landlord: There are two situations: this problem occurs during normal use, and it should be that the switch has modified the system parameters. Generally, the original method is that hotel guests need to call the front desk first, and then there is always a chance to transfer them out. However, there is no charge for internal calls of the extension. At present, basic hotels have room billing systems. Generally, when guests check in, as long as they dial an outside line, the exchange will automatically charge, and when they check out, they will automatically calculate the phone bill.

If the extension can't make internal calls at first, then the extension has been set with permission, and the extension can't make internal calls when installing the switch. However, based on the particularity of the setting of LG MG series telephone switches, please consult the supplier or manufacturer's customer service for details!