Which address format is used for sending communications to a shoreside TELEX terminal in Canada?

When sending communications to a shoreside TELEX terminal, the correct address format is crucial for ensuring that the message reaches its intended destination. The format that includes "C. (1)10012456+" complies with the established conventions for international TELEX communication.

In this format, "(1)" indicates that the message is being sent to a specific country code, which in this case corresponds to Canada. Following this, the "10012456" represents the individual TELEX subscriber number. The plus sign at the end often denotes that the number is a full international address, which is necessary for automated routing of communications across different networks.

This format distinguishes it from the other options, which either lack the correct country code indicator or do not follow the prescribed standard for international TELEX addresses. Using the correct format ensures that TELEX messages are properly routed and delivered, highlighting the importance of adhering to standards in maritime communications.