3 last external number re-dial, 4 when you receive a busy tone, 1 callback – AASTRA DT690 User Manual

Page 46: 1 ordering callback for an extension

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3 last external number re-dial, 4 when you receive a busy tone, 1 callback | 1 ordering callback for an extension | AASTRA DT690 User Manual | Page 46 / 140 3 last external number re-dial, 4 when you receive a busy tone, 1 callback | 1 ordering callback for an extension | AASTRA DT690 User Manual | Page 46 / 140
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