Active Messenger allows to forward incoming text messages to the available portable and stationary devices like text and voice pagers, cellular phones etc., possibly to several devices in turn, monitoring the reactions of the user and the success of the delivery. If necessary, email messages are transformed to fax messages or read to the user over the phone. The Active Messenger is aware of which devices are available for each subscriber, which devices were used recently, and if a message was received and read by the user by exploiting back-channel information and by inferring from the users communication behavior over time.
In summary, the Active Messenger
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