Call establishment based on presence

A method comprising:

• receiving, at a data-processing system, a first signal that indicates an unsuccessful call attempt from a first telecommunications terminal associated with a first user, the unsuccessful call attempt being addressed directly to a wireless telecommunications terminal associated with a second user, wherein the data-processing system is separate from the wireless telecommunications terminal;
• transmitting, in response to the first signal, a second signal that prompts the first user for a multi-modal condition of availability of the first user for a call with the second user;
• receiving, at the data-processing system, the multi-modal condition of availability in response to the unsuccessful call attempt;
• receiving, at the data-processing system, a third signal that indicates that the second user is able to engage in the call via a second telecommunications terminal, wherein the third signal is in response to prompting the second user, prior to establishing the call between the first telecommunications terminal and the second telecommunications terminal, whether to establish the call;
• upon receiving the third signal and while the multi-modal condition of availability is satisfied, transmitting, to the second telecommunications terminal, a fourth signal that indicates that the first user previously called;
• and
• in response to receiving a fifth signal that comprises an indication from the second telecommunications terminal to establish the call, establishing the call between the first telecommunications terminal and the second telecommunications terminal.

A method comprising:

• receiving, at a data-processing system, a first signal that indicates an unsuccessful call attempt from a first telecommunications terminal associated with a first user, the unsuccessful call attempt being addressed directly to a wireless telecommunications terminal associated with a second user, wherein the data-processing system is separate from the wireless telecommunications terminal;
• transmitting, in response to the first signal, a second signal that prompts the first user for a multi-modal condition of availability for a call with the second user;
• receiving, by the data-processing system, a third signal that indicates that the second user is able to engage in the call via a second telecommunications terminal that is different from the wireless telecommunications terminal, wherein the third signal is in response to prompting the second user for an indication of whether to establish the call with the first telecommunications terminal;
• upon receiving the third signal and while the multi-modal condition of availability is satisfied, transmitting, to the second telecommunications terminal, a fourth signal that indicates that the first user previously called;
• and
• in response to receiving, from the second telecommunications terminal, a fifth signal that comprises the indication, establishing the call between the first telecommunications terminal and the second telecommunications terminal.