45 A housing undertaking or a real estate undertaking or a similar entity that, within a real estate or between real estates, owns or manages a fixed communications network connected to a public communications network is obliged to relinquish on non-discriminatory terms to a telecommunications operator, which was chosen by a subscriber, access rights to the available capacity of an internal communications network of a real estate or a group of real estates in order to transmit communications services to the user’s terminal equipment inside the real estate. Section 112 Deposit, security and spending limit A telecommunications operator or consumer may set a reasonable spending limit in euros for the subscriber connection. A telecommunications operator may require from a consumer a deposit or security for a telephone network subscriber connection agreement only when entering into the agreement and only for special reasons such as foreseeable insolvency or some other comparable circumstance. The deposit or security may not exceed the total amount of payments expected to accrue for the services provided before the telecommunications operator can bar the use of a subscriber connection due to neglected payments. Section 113 Tie-in sales If a telecommunications operator combines agreements concerning terminal equipment and network services at the time of purchase in a way that influences the purchasing price of the items (tie-in sales), the operator shall also provide the subscriber with a similar communications service without the terminal equipment. Marketing material shall provide the information referred to in Chapter 2(12) of the Consumer Protection Act (38/1978) and the total amount of additional costs to be incurred to the consumer for tie-in sales. A telecommunications operator may bar the use of another operator’s subscriber connection on a mobile phone included in tie-in sales. At the request of the consumer the barring shall be removed without delay once the subscriber connection agreement ends. The consumer shall not be charged for the removal of the barring. Section 114 Amending an agreement The telecommunications operator may amend the terms, including payments, in a communications service agreement valid until further notice to the detriment of the consumer only: 1) on grounds specified in the agreement terms, assuming that the content of the agreement does not change essentially as a whole; 2) on the basis of a change in legislation or a decision by the authorities; A telecommunications operator also has the right to make minor amendments to the agreement terms of a communications service agreement valid until further notice, provided they have no effect on the main content of the agreement.