ÖNORM EN 300778-2 V 1.2.1

The present document specifies the electrical characteristics and the functional characteristics for Terminal Equipment (TE) for connection to the network termination point (NTP) of a Public Switched Telephone Network (PSTN) interface providing a Protocol Over The local Loop For Display Services, based on the protocols defined in EN 300 659-2 [1] and EN 300 659-3 [4]. The present document contains only additional requirements with respect to the requirements in EN 300 778-1 [2]. The present document does not specify any method to cater for distinction between several TE-ACK, if sent, when more than one TE is off-hook on the same line. The present document applies to off-hook data transmission only. A TE intended for off-hook data transmission shall also be able to receive a on-hook data transmission. The present document is not written for regulatory purposes. The requirements are intended to ensure correct reception and detection of the received data. The method of displaying the received data is not defined