How to mend Flashing Icon One Handset

How can i show calls made to my phone?

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How do I change the OGM on my Telstra 7100a phone?

new call light?

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Fix answer machine number?

How do I connect my own answering machine?

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require a users manual?

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telephones?

Day Display - How do I alter?

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write a program that prompts the user to input an integer?

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information needed?