The AIS Corporate Office Phone service helps you to optimize the efficiency of corporate communications. It achieves this by enabling users of the service to utilize their in-house office telephone system to call out to other mobile phones via the AIS network, or to other long-distance landline numbers using our special AIS promotion. By simply connecting our Fixed Wireless Terminal equipment to your organization’s private automatic branch exchange (PABX) system, calls are cheaper than they would be with the regular landline or public telephone network (PSTN). In addition, your organization benefits from having additional telephone lines, but without wasting valuable time or resources installing new phone lines and cumbersome equipment. A single Fixed Wireless Terminal takes just one SIM card.