What is the effect of having five periods in the text of a TELEX transmission on an Inmarsat-B SES?

Having five periods in the text of a TELEX transmission affects the Inmarsat-B Satellite Earth Station (SES) because the presence of these characters signifies a termination command. In the context of a TELEX transmission, sending five consecutive periods indicates to the system that the message is complete, leading to the automatic termination of the transmission once those characters are processed. This functionality is designed to facilitate clear communication by providing a standardized end marker, thus ensuring that the receiving party does not need to guess whether the message has been fully conveyed. The mechanism allows for efficient handling of data and aligns with established communication protocols used in maritime operations.